RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
TO HOLDERS OF TURBOFAN AIRCRAFT ENGINE LIGHT MAINTENANCE MANUAL 72-02-15, REVISION
8, DATED 15 JUN 2007. THIS TR IS ALSO APPLICABLE TO THE CD-ROM TFE731-3L AND THE CD-ROM
TFE731-3H.
WARNING:
READ EACH PAGE CAREFULLY. PUT THE PAGE INTO THE APPLICABLE SECTION AS
SHOWN. THIS TEMPORARY REVISION CAN CONTAIN PAGES THAT REFER TO
DIFFERENT SECTIONS OF THIS CHAPTER. MAKE SURE THAT THE TEMPORARY
REVISION IS CORRECTLY ADDED INTO THE MANUAL. IF YOU DO NOT OBEY THESE
INSTRUCTIONS, THERE IS A RISK THE MAINTENANCE PROCEDURE WILL NOT BE
DONE CORRECTLY.
INSERT PAGE 1 OF 38 AND PAGE 2 OF 38 AS THE FIRST PAGES OF THE MANUAL.
Temporary
Revision
Number
79-11
Applicable Chapter/Section/Subject
Number, Page Number
79-10-00, 1
79-10-01, 206
79-10-01, 208
79-10-01, 210
79-10-01, 211
79-10-01, 212
79-10-01, 213
79-10-01, 214
79-10-01, 215
79-10-01, 216
79-10-01, 217
79-10-01, 218
79-10-01, 219
79-10-01, 220
79-10-01, 221
79-10-01, 222
79-10-01, 223
79-10-01, 224
79-10-01, 227
79-10-01, 228
79-10-01, 230
79-10-01, 231
UP784438
PCR RTM-0035
72-02-15
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 1 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
Export Control
These items are controlled by the U.S. government and authorized for export only to the country of ultimate
destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold,
transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate
consignee or end-user(s), either in their original form or after being incorporated into other items, without first
obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.
ECCN: 9E991.
Honeywell – Confidential
THIS DOCUMENT AND ALL INFORMATION AND EXPRESSION CONTAINED HEREIN ARE THE
PROPERTY OF HONEYWELL INTERNATIONAL INC., ARE PROVIDED IN CONFIDENCE, AND MAY BE
USED BY PERSONS REQUIRED BY FEDERAL AVIATION REGULATION PART 21.50 TO COMPLY
WITH ANY OF THE TERMS OF THESE INSTRUCTIONS. EXCEPT AS SET FORTH ABOVE, NO
PERSON MAY, IN WHOLE OR IN PART, USE, DUPLICATE OR DISCLOSE THIS INFORMATION FOR
ANY PURPOSE WITHOUT THE PRIOR WRITTEN PERMISSION OF HONEYWELL INTERNATIONAL
INC.
Copyright - Notice
Copyright 2019 Honeywell International Inc. All rights reserved.
Honeywell is a registered trademark of Honeywell International Inc.
All other marks are owned by their respective companies.
UP784438
PCR RTM-0035
72-02-15
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 2 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 3 OF 38 FACING 79-10-00, PAGE 1.
Reason:
To change Paragraph 1 to show the updated oil tank information.
Paragraph 1 is changed as follows:
1.
General
The oil tank is mounted on the right-hand outside of the fan by-pass housing. The tank is equipped
with a coarse screen at the oil suction intake. The tank is also equipped with a liquid level (sight glass)
gage to check oil quantity and a filler plug.
[3-1D, 3-1H, 3-1J, 3B-100S, 3C-100S], [3-1C, Post SB TFE731-79-3077] A filler tube with a filler plug
on the left side of the engine provides a means of filling the oil tank on engines mounted such that the
oil tank filler plug is inaccessible.
[3A-2B, 3A-3B, 3C-3B], [3-1C, Pre SB TFE731-79-3077] A filler tube with liquid level gage (filler plug
and dipstick) on the left side of the engine provides a means of checking oil level and filling the oil tank
on engines mounted such that the oil tank sight gage and/or filler plug are inaccessible.
[3-1F, 3-1K] An auxiliary fill tube with integral liquid level gage and a filler plug is mounted on the lefthand side of the engine to provide a means of checking oil level and filling the oil tank on engines
mounted such that the oil tank liquid level gage and filler plug are inaccessible.
The oil tank installation includes all of the connecting tubes and elbows, as well as the oil tank.
[3-1E] Oil storage components are not part of the engine. Refer to the Aircraft Maintenance Manual.
[3-1J] The oil tank required for inverted flight contains a vent system that has the capability of venting
from either the top or bottom of the tank as a function of attitude. The switching of the vent functions
from the top vent pickup to the bottom vent pickup during inverted flight is accomplished with a gravity
sensitive check valve. The check valve contains steel balls within the valve housing. Proper
functioning of the vent valve may be checked, with the oil tank removed from the engine, by rotating
the tank from the normal flight position to an inverted flight position. Each time the tank is inverted a
distinctive “clunking” sound should be heard, which indicates that the valve is operational.
UP784438
[3-1J] Any solvent or water flushing of the tank for removal of contaminants should be directly followed
by an oil flush (filling and draining) with clean, approved engine oil, to prevent corrosion of the gravity
valve balls if the tank will not be immediately returned to service.
79-10-00
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 3 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 4 OF 38 FACING 79-10-01, PAGE 206.
Reason:
To change Figure 203 to show the latest auxiliary fill information.
Figure 203 is changed as follows:
UP784438
[3-1F, 3-1K] Oil Tank Auxiliary Fill Installation
Figure 203
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 4 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 5 OF 38 FACING 79-10-01, PAGE 207.
Reason:
To change Page 207 in its' entirety to show latest vent tube, filler tube and auxiliary fill tube
information.
Page 207 is changed as follows:
NOTE: See Figure 203 for location of components during the following procedures.
1.
B.
[3-1F, 3-1K] Removal of Oil Tank Auxiliary Fill
(1)
Remove nuts, washers, bolts, clamps, and bracket securing vent tube assembly, then
remove vent tube assembly. Remove union or check valve with packing from boss on
oil tank auxiliary fill for vent tube assembly. Remove packing from union or check
valve. Discard packing.
KEY TO FIGURE 203
5.
NUT
120.
BOLT
20.
BOLT
125.
RETAINER
25.
CLAMP
130.
NUT (PART ADDED)
30.
NUT (PART ADDED)
135.
BOLT (PART ADDED)
35.
WASHER
140.
NUT
40.
BOLT (PART ADDED)
145.
BOLT
45.
BRACKET (PART ADDED)
155.
PACKING
50.
NUT (PART ADDED)
***160.
55.
BOLT (PART ADDED)
**163.
ADAPTER
60.
CLAMP (PART ADDED)
&165.
SCREW
65.
CLAMP (PART ADDED)
#167.
SCREW
70.
BOLT (PART ADDED)
&170.
LIQUID SIGHT INDICATOR
75.
CLAMP (PART ADDED)
#172.
LIQUID LEVEL GAGE
80.
VENT TUBE ASSEMBLY
175.
INSTRUCTION PLATE
85.
UNION
&180.
GASKET
90.
CHECK VALVE
#182.
PACKING
95.
REDUCER
185.
100.
PACKING
*190.
105.
CHECK VALVE
200.
OIL TANK AUXILIARY FILL
110.
VALVE HOUSING
205.
PACKING
115.
PACKING
210.
BOLT
PLUG
BALL
INSERT
* NOT REMOVED AT MAINTENANCE LEVEL.
** REMOVE FOR REPAIR ONLY.
UP784438
*** A FILLER PLUG CONSISTS OF ITEM 160 WITH ITEM 155.
& PRE SB 79-3057
# POST SB 79-3057
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 5 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 6 OF 38 FACING 79-10-01, PAGE 208.
INSERT PAGE 7 OF 38 FACING 79-10-01, PAGE 209.
Reason:
To change Page 208 in its' entirety and Page 209 in its’ entirety to show latest vent tube, filler
tube and auxiliary fill tube information.
Refer to Page 7 for Page 209 changes, Page 208 is changed as follows:
1.
B.
(2)
Remove bolt and retainer securing auxiliary fill tube to bottom of oil tank auxiliary fill
assembly. Remove nuts and bolts securing assembly to engine and remove
assembly. Remove filler plug and packing from assembly. Remove packing from
auxiliary fill tube and filler plug. Discard packings.
(3)
Remove bolts and bracket used for securing tab on oil tank auxiliary fill assembly.
(4)
[Pre SB TFE741-79-3057] If removal of liquid sight indicator (170) is required, refer to
Approved Repairs.
(5)
[Post SB TFE731-79-3057] If removal of liquid level gage (172) is required, refer to
Approved Repairs.
NOTE:
UP784438
1.
C.
See Figures 204 through 207, as applicable, for location of components during the
following procedures.
Removal of Vent Tube and Filler Tube or Auxiliary Fill Tube
(1)
Remove bolts and retainers securing vent tube and elbow. Remove tube, elbow, and
packings from oil tank and accessory gearbox housing. Remove plug and packing
from tube. Remove packings from tube, elbow and plug. Discard packings.
(2)
[All except 3-1F, 3-1G, 3-1K, 3A-200G, 3C-200G] Remove nuts, bolts, washers and
clamp securing filler tube to engine. Remove bolt and retainer securing tube to oil
tank. Remove tube and packing from tank. Remove liquid level gage or filler plug, as
applicable, from tube in accordance with 72-00-00, Servicing. Remove packing from
tube. Remove packing from gage or plug (refer to Approved Repairs for packing
location). Discard packings.
(3)
[3-1F, 3-1K] Remove nut, washer, and bolt securing auxiliary fill tube to fan inlet
housing. Remove bolt and retainer securing tube to oil tank. Remove tube and
packing from tank. Remove packings from tube. Discard packings.
(4)
[3-1C] If clamp is utilized on grounding cable, remove clamp from filler tube.
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 6 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
KEY TO FIGURE 204
5.
BOLT
55.
PACKING
10.
RETAINER
60.
PACKING
15.
BOLT
65.
NUT
20.
RETAINER
75.
WASHER
25.
ELBOW
80.
BOLT
30.
PACKING
130.
BOLT
40.
VENT TUBE
135.
RETAINER
45.
PLUG
190.
AUXILIARY FILL TUBE
50.
PACKING
200.
PACKING
UP784438
[3-1F, 3-1K] Vent Tube and Auxiliary Fill Tube Installation
Figure 204
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 7 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 8 OF 38 FACING 79-10-01, PAGE 210.
Reason:
To change Figure 205 to show latest vent tube information.
Figure 205 is changed as follows:
UP784438
[3-1G, 3A-200G, 3C-200G] Vent Tube Installation
Figure 205
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 8 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 9 OF 38 FACING 79-10-01, PAGE 211.
Reason:
To change Key to Figure 205 to show latest vent tube information.
Key to Figure 205 is changed as follows:
KEY TO FIGURE 205
UP784438
5.
BOLT
40.
VENT TUBE
10.
RETAINER
45.
PLUG
15.
BOLT
50.
PACKING
20.
RETAINER
55.
PACKING
25.
ELBOW
60.
PACKING
30.
PACKING
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 9 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 10 OF 38 FACING 79-10-01, PAGE 212.
Reason:
To change Figure 206 to show latest vent and filler tube information.
Figure 206 is changed as follows:
UP784438
[3-1D, 3-1H, 3-1J, 3B-100S, 3C-100S] Vent and Filler Tube Installation
Figure 206
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 10 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 11 OF 38 FACING 79-10-01, PAGE 213.
Reason:
To change Key to Figure 206 to show latest vent and filler tube information.
Key to Figure 206 is changed as follows:
KEY TO FIGURE 206
5.
BOLT
80.
BOLT
10.
RETAINER
90.
WASHER
15.
BOLT
95.
NUT
20.
RETAINER
100.
WASHER
25.
ELBOW
105.
BOLT
30.
PACKING
110.
CLAMP
35.
VENT TUBE
130.
BOLT
40.
VENT TUBE
135.
RETAINER
45.
PLUG
175.
PACKING
50.
PACKING
*185.
55.
PACKING
190.
FILLER TUBE
60.
PACKING
200.
PACKING
65.
NUT
210.
INSTRUCTION PLATE
PLUG
UP784438
* A FILLER PLUG CONSISTS OF ITEM 185 WITH ITEM 175.
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 11 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 12 OF 38 FACING 79-10-01, PAGE 214.
Reason:
To change Figure 207 to show latest vent and filler tube information.
Figure 207 is changed as follows:
UP784438
[3-1C, 3A-2B, 3A-3B, 3C-3B] Vent and Filler Tube Installation
Figure 207
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 12 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 13 OF 38 FACING 79-10-01, PAGE 215.
Reason:
To change Key to Figure 207 to show latest vent and filler tube information.
Key to Figure 207 is changed as follows:
KEY TO FIGURE 207
5.
BOLT
95.
NUT
10.
RETAINER
100.
WASHER
15.
BOLT
105.
BOLT
20.
RETAINER
110.
CLAMP
25.
ELBOW
120.
CLAMP (PART DELETED)
30.
PACKING
35.
VENT TUBE
130.
BOLT
40.
VENT TUBE
135.
RETAINER
45.
PLUG
50.
#125.
GROUNDING CABLE
*155.
LIQUID LEVEL GAGE
PACKING
**160.
LIQUID LEVEL GAGE
55.
PACKING
***165.
FILLER PLUG
60.
PACKING
190.
FILLER TUBE
65.
NUT
200.
PACKING
80.
BOLT
210.
INSTRUCTION PLATE
90.
WASHER
* [3-1C] EARLY CONFIGURATION.
** [3A-2B, 3A-3B, 3C-3B], [3-1C, PRE SB TFE731-79-3077] LATER CONFIGURATION.
*** [3-1C, POST SB TFE731-79-3077].
UP784438
# [3-1C]
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 13 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 14 OF 38 FACING 79-10-01, PAGE 216.
Reason:
To change Figure 208 to show latest oil tank information.
Figure 208 is changed as follows:
UP784438
[All Except 3-1E] Oil Tank Installation
Figure 208
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 14 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 15 OF 38 FACING 79-10-01, PAGE 217.
Reason:
To change Key to Figure 208 to show latest oil tank information. (Paragraphs 1.D. thru 1.D.(7) to
be moved to Page 218.)
Key to Figure 208 is changed as follows:
KEY TO FIGURE 208
5.
BOLT
75.
PACKING
10.
WASHER
***76.
BOLT
15.
NUT
***77.
RETAINER
20.
WASHER
***78.
PLUG
25.
SCREW
***79.
PACKING
30.
WASHER
88.
PACKING
35.
UPPER MOUNT LINK
90.
PACKING
40.
LOWER MOUNT LINK
&#93.
FILLER PLUG
45.
MOUNT LINK BUSHING
%#95.
FILLER PLUG
50.
SCREW OR BOLT
*100.
SCREW
52.
BOLT OR SCREW
**102.
SCREW
60.
RIVET
63.
NUTPLATE
**107.
63B.
NUTPLATE
110.
*105.
LIQUID SIGHT INDICATOR
LIQUID LEVEL GAGE
BALL
65.
TANK MOUNTING STRIP
*115.
GASKET
67.
TANK MOUNTING STRIP
**117.
PACKING
67A.
TANK MOUNTING STRIP
120.
INSTRUCTION PLATE
DRAIN PLUG
125.
OIL TANK
70.
* [PRE SB TFE731-79-3057].
** [POST SB TFE731-79-3057]
*** [3-1G, 3A-200G, 3C-200G]
# A FILLER PLUG CONSISTS OF ITEM 93 WITH ITEM 88 OR ITEM 95 WITH ITEM 90.
& [3-1C] EARLY CONFIGURATION.
UP784438
% LATER CONFIGURATION.
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 15 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 16 OF 38 FACING 79-10-01, PAGE 218.
Reason:
To add NOTE and Paragraphs 1.D. thru 1.D.(6) to show latest oil tank information. Paragraphs
1.E.(2)(a) thru (e) moved to Paragraph 4.F. and renumbered. Paragraph 1.E.(3) moved to page
219 and renumbered. Paragraphs 1.E.(3)(a) thru (d) and 1.E.(4) moved to Paragraph 4.G. and
renumbered.
Paragraphs 1.D. thru 1.D.(6) are added, and Paragraphs 1.E. thru 1.E.(3)(d) are changed as follows:
NOTE:
1.
D.
See Figure 208 for location of components during the following procedures.
[All except 3-1E] Removal of Oil Tank
(1)
Remove drain plug and packing from oil tank. Remove packing from plug. Discard
packing.
(2)
Remove nuts, bolts, screws, washers, and bushings securing upper and lower mount
links to engine. Remove mount links.
(3)
Remove screws and mounting strip securing oil tank to engine. Remove tank from
engine. Remove filler plug (plug (93) with packing (88) or plug (95) with packing (90))
from tank in accordance with 72-00-00, Servicing. Remove packing from plug. Discard
packing.
(4)
[Pre SB TFE731-79-3057] If removal of liquid sight indicator (105) is required, refer to
Approved Repairs.
(5)
[Post SB TFE731-79-3057] If removal of liquid level gage (107) is required, refer to
Approved Repairs.
(6)
[3-1G, 3A-200G, 3C-200G] Remove bolt and retainer securing plug (78) to oil tank.
Remove plug with packing from tank, then remove packing from plug. Discard
packing.
NOTE:
UP784438
E.
Refer to 70-00-00, Standard Practices for general torque values. Add frictional drag
(run-down) torque of self-locking devices to recommended values.
[All except 3-1E] Installation of Oil Tank (See Figure 208)
(1)
Install drain plug (70) with new packing (75) on oil tank (125). Tighten drain plug to
120 to 130 in-lb torque.
(2)
[3-1G, 3A-200G, 3C-200G] Install plug (78) with new packing (79) on oil tank (125)
and secure with retainer (77) and bolt (76). Tighten bolt to 70 in-lb torque.
(3)
[Pre SB TFE731-79-3057] If liquid sight indicator (105) was removed, install it in
accordance with Approved Repairs.
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 16 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 17 OF 38 FACING 79-10-01, PAGE 219.
Reason:
To replace Paragraphs 1.E.(4) thru (5) and to delete Table 202.
Paragraphs 1.E.(4) thru (5) are replaced as follows:
1.
E.
(4)
[Post SB TFE731-79-3057] If liquid level gage (107) was removed, install gage in
accordance with Approved Repairs.
CAUTION:
UP784438
(5)
WHEN PERFORMING THE FOLLOWING STEP, ENSURE PROPER FILLER
PLUG AND NEW PACKING ARE INSTALLED ON OIL TANK OR ENGINE
DAMAGE MAY RESULT DUE TO LOSS OF LUBRICATING OIL. REFER TO
ILLUSTRATED PARTS CATALOG FOR CORRECT CONFIGURATION.
Install new packing (88) on plug (93) or packing (90) on plug (95), as applicable.
Install filler plug on oil tank (125) in accordance with 72-00-00, Servicing.
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 17 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 18 OF 38 FACING 79-10-01, PAGE 220.
Reason:
To change Paragraphs 1.F.(1) and (3) and to add Paragraph 1.F.(4) for the latest oil tank
information. Figure 209 is changed, relocated after Paragraph 4.G. and renumbered as Figure
214.
Paragraphs 1.F.(1) and (3) are changed and Paragraph 1.F.(4) is added as follows:
UP784438
1.
F.
(1)
Install new packing on auxiliary fill tube for connection at oil tank. Insert end of the
tube in oil tank, then secure tube to engine with nut, washer, and bolt. Tighten nut
(70) to 40 in-lb torque.
(3)
Assemble vent tube and elbow with new packings and secure to engine with bolts and
retainers. Tighten bolts (5, 15) to 25 in-lb torque.
(4)
Install plug (40) with new packing on vent tube. Tighten plug to 35 in-lb torque.
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 18 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 19 OF 38 FACING 79-10-01, PAGE 221.
Reason:
To change Paragraph 1.G. to show latest oil tank auxiliary fill information.
Paragraph 1.G. is changed as follows:
NOTE:
UP784438
1.
G.
Refer to 70-00-00, Standard Practices for general torque values. Add frictional drag (rundown) torque of self-locking devices to recommended values. See Figure 203 for location
of components during the following procedures.
[3-1F, 3-1K] Installation of Oil Tank Auxiliary Fill
(1)
[Pre SB TFE731-79-3057] If liquid sight indicator (170) was removed, install it in
accordance with Approved Repairs.
(2)
[Post SB TFE731-79-3057] If liquid level gage (172) was removed, install it in
accordance with Approved Repairs.
(3)
Install bracket for securing tab on oil tank auxiliary fill with bolts on fan inlet housing.
Tighten bolts (210) to 40 in-lb torque.
(4)
Install bracket for securing clamp on vent tube assembly with bolt, washer, and nut on
tab of fan inlet housing. Tighten nut (30) to 40 in-lb torque.
(5)
Install new packing on auxiliary fill tube for connection at bottom of oil tank auxiliary
fill.
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 19 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 20 OF 38 FACING 79-10-01, PAGE 222.
Reason:
To change Paragraphs 1.G.(6) thru 1.G.(9) to show latest oil tank auxiliary fill information.
Paragraphs 1.G.(6) thru 1.G.(9) are changed as follows:
1.
G.
(6)
Position oil tank auxiliary fill assembly on engine with auxiliary fill tube inserted and
mounting holes aligned with bolt holes at fan inlet housing flange. Install bolts and
nuts at fan inlet housing flange. Tighten bolts (145) to 40 in-lb torque. Secure tube
with retainer and bolt. Tighten bolt (120) to 70 in-lb torque.
(7)
Secure tab on oil tank auxiliary fill to adjacent bracket with nut and bolt. Tighten bolt
(135) to 125 in-lb torque.
(8)
Install new packing and union or check valve on boss of oil tank auxiliary fill for vent
tube assembly. Install vent tube assembly and secure with clamp, nuts, and bolts.
CAUTION:
UP784438
(9)
WHEN PERFORMING THE FOLLOWING STEP ENSURE NEW PACKING
INSTALLED ON FILLER PLUG PRIOR TO INSTALLATION ON OIL TANK
AUXILIARY FILL OR ENGINE DAMAGE MAY RESULT DUE TO LOSS OF
LUBRICATING OIL.
Install new packing (155) on plug (160). Install filler plug on oil tank auxiliary fill in
accordance with 72-00-00, Servicing.
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 20 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 21 OF 38 FACING 79-10-01, PAGE 223.
Reason:
To change Paragraph 1.H. thru Paragraph 1.H. Step (2) to show the latest vent and filler tube
information.
Paragraph 1.H. thru Paragraph 1.H. Step (2) is changed as follows:
NOTE:
Refer to 70-00-00, Standard Practices for general torque values. Add frictional
drag (run-down) torque of self-locking devices to recommended values.
See Figures 205 through 207, as applicable, for location of components during the
following procedures.
1.
H.
[All except 3-1E, 3-1F, 3-1K] Installation of Vent and Filler Tube
UP784438
CAUTION:
[All except 3-1G, 3A-200G, 3C-200G] WHEN PERFORMING THE
FOLLOWING STEP ENSURE PROPER LIQUID LEVEL GAGE OR FILLER
PLUG, AS APPLICABLE, AND NEW PACKING ARE INSTALLED ON
FILLER TUBE OR ENGINE DAMAGE MAY RESULT DUE TO LOSS OF
LUBRICATING OIL. REFER TO ILLUSTRATED PARTS CATALOG FOR
CORRECT CONFIGURATION.
(1)
[All except 3-1G, 3A-200G, 3C-200G] Install new packing on liquid level gage or filler
plug as applicable (refer to Approved Repairs for packing location). Install gage or
plug on filler tube in accordance with 72-00-00, Servicing. Install clamp on tube.
(2)
[3-1C] On engines utilizing long grounding cable (approximately 20 inches), install
clamp on cable and align with clamp installed on filler tube.
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 21 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 22 OF 38 FACING 79-10-01, PAGE 224.
Reason:
To change Paragraphs 1.H.(3) thru (5) to show latest vent and filler tube information and to
delete Paragraph 1.H.(6).
Paragraphs 1.H.(3) thru (5) are changed and Paragraph 1.H.(6) is deleted as follows:
UP784438
1.
H.
(3)
[All except 3-1G, 3A-200G, 3C-200G] Install new packing on end of filler tube that
mates with oil tank. Insert end of tube in oil tank, then secure tube to fan inlet housing
and tank with nuts, washers, retainer, and bolts. Tighten nuts (65, 95) to 40 in-lb
torque. Tighten bolt (130) to 70 in-lb torque.
(4)
Assemble vent tube and elbow with new packings on engine and secure with bolts
and retainers. Tighten bolts (5, 15) to 25 in-lb torque.
(5)
If using vent tube (40), install plug with new packing on vent tube. Tighten plug (45) to
35 in-lb torque.
(6)
Deleted.
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 22 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 23 OF 38 FACING 79-10-01, PAGE 227.
Reason:
To change Paragraphs 2.A. thru 2.B.(6) to show the latest inspection information.
Paragraphs 2.A. thru 2.B.(6) are changed as follows:
2.
A.
[All except 3-1E, 3-1G, 3-1J, 3A-200G, 3C-200G] Inspection of Filler Tube or Auxiliary Fill
Instruction Plate
Visually inspect instruction plate (210, Figure 206 or 207, or 175, 220, Figure 203), as
applicable, for damage, security and legibility. Damaged, loose and/or unreadable instruction
plate not allowed. Refer to Approved Repairs.
B.
[All except 3-1E] Inspection of Oil Tank
(1)
Visually inspect for cracks, cracked welds, damaged sealing surface on filler neck and
cracked support brackets. Cracks, cracked welds, damaged sealing surfaces and
cracked support brackets not allowed.
(2)
Inspect bosses for stripped threads and broken welds. Stripped boss threads and
broken welds not allowed.
(3)
Inspect tank for evidence of leakage. Leakage not allowed. Repair leakage around
liquid sight indicator (105, Figure 208) or liquid level gage (107) in accordance with
Approved Repairs.
(4)
A repair may be available for damaged oil tank. Due to critical process control
requirements which must be maintained during the repair process, this repair is
authorized to be performed only by Honeywell. Return part to be repaired to the
following address.
UP784438
Honeywell International Inc.
Distribution Center
1944 E Sky Harbor Circle
Phoenix, AZ 85034-3440
(5)
Visually inspect oil tank instruction plate (120, Figure 208) for damage, security and
legibility. Damaged, loose and/or unreadable instruction plate not allowed. Refer to
Approved Repairs.
(6)
[3-1J] Invert oil tank while listening for a distinctive “clunking” sound, indicating
movement of the steel balls in the internal check valve. If the “clunking” sound is not
heard, replace the oil tank.
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 23 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 24 OF 38 THRU PAGE 27 OF 38 FACING 79-10-01, PAGE 228.
Reason:
To change Paragraphs 2.C. and 2.D. and to add Paragraph 2.E. thru 2.F.(4) and Figures 210
and 211 to show the latest inspection information.
Paragraphs 2.C. and 2.D. are changed and Paragraph 2.E. thru 2.F.(4) and Figures 210 and 211 are added as
follows:
2.
C.
[3-1C] Inspection of Grounding Cable
(1)
D.
E.
[3-1F, 3-1K] Inspection of Oil Tank Auxiliary Fill
(1)
Visually inspect bayonet lugs on filler plug (160, Figure 203) and mating groove of
adapter (163) on oil tank auxiliary fill (200) for fretting. Fretting not acceptable if
leakage by packing (155) on plug is evident.
(2)
Visually inspect oil tank auxiliary fill (200) for cracks. Cracks not allowed.
(3)
Inspect oil tank auxiliary fill (200) for evidence of leakage. Leakage not allowed.
Repair leakage around liquid sight indicator (170) or liquid level gage (172) in
accordance with Approved Repairs.
(4)
Visually inspect the oil tank auxiliary fill instruction plate (175) for damage, security
and legibility. Damaged, loose and/or unreadable instruction plate not allowed. Refer
to Approved Repairs.
[3A-2B, 3A-3B, 3C-3B], [3-1C, Pre SB TFE731-79-3077] Inspection of Liquid Level Gage
(1)
(2)
UP784438
F.
Visually inspect grounding cable (125, Figure 207) for broken strands and missing or
loose terminals. Broken strands and/or missing or loose terminals are not acceptable.
Visually inspect liquid level gage (155, 160, Figure 207) dipstick for bends, kinks,
breakage and unreadable markings. See Figures 209 or 210, as applicable.
(a)
Carefully straighten dipstick bends.
(b)
[3-1C with Liquid Level Gage, PN 361-530-9003, -9004], [3A-2B, 3A-3B,
3C-3B, 3-1C, Pre SB TFE731-79-3077] Replace liquid level gage if dipstick
(25, Figure 209 or 30, Figure 210, as applicable) is kinked, broken or
markings are not readable.
(c)
[3A-2B, 3A-3B, 3C-3B, Post SB TFE731-79-3077] Replace dipstick (30,
Figure 210) in accordance with Approved Repairs if dipstick is kinked, broken
or markings are not readable.
Visually inspect liquid level gage (155, 160, Figure 207) for missing, chipped or worn
yellow paint stripe. Replace liquid level gage if paint stripe is missing, chipped or
worn.
Inspection of Filler Plug
(1)
[3-1F, 3-1K] Visually inspect filler plug (160, Figure 203, and 95, Figure 208) for
missing, chipped or worn yellow paint stripe. Replace filler plug if paint stripe is
missing, chipped or worn.
(2)
[3-1D, 3-1H, 3-1J, 3B-100S, 3C-100S] Visually inspect filler plug (185, Figure 206,
and 95, Figure 208) for missing, chipped or worn yellow paint stripe. Replace filler
plug if paint stripe is missing, chipped or worn.
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 24 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
UP784438
2.
F.
(3)
[3-1C, Post SB TFE731-79-3077] Visually inspect filler plug (165, Figure 207, and 95,
Figure 208) for missing, chipped or worn yellow paint stripe. Replace filler plug if paint
stripe is missing, chipped or worn.
(4)
[3A-2B, 3A-3B, 3C-3B, 3-1G, 3A-200G, 3C-200G], [3-1C, Pre SB TFE731-79-3077]
Visually inspect filler plug (93 or 95, Figure 208, as applicable) for missing, chipped or
worn yellow paint stripe. Replace filler plug if paint stripe is missing, chipped or worn.
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 25 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
Liquid Level Gage, PN 361-530-9003, -9004/Filler Plug, PN 572-533-9103
Figure 209
+*10.
PLUG
+*15.
PIN
UP784438
*
+
+*20.
PACKING
*25.
DIPSTICK
LIQUID LEVEL GAGE COMPONENTS
FILLER PLUG COMPONENTS
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 26 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
Liquid Level Gage, PN 361-530-9101, -9114/Filler Plug, PN 572-533-9201, -9225
Figure 210
+*10.
PLUG
*20.
SPRING
+*15.
PACKING
*25.
SNAP RING
*30.
DIPSTICK
UP784438
*
+
LIQUID LEVEL GAGE COMPONENTS
FILLER PLUG COMPONENTS
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 27 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 28 OF 38 FACING 79-10-01, PAGE 230.
Reason:
To change Paragraphs 4.A. thru 4.A.(6) to show the latest repair information.
Paragraphs 4.A. thru 4.A.(6) are changed as follows:
UP784438
4.
A.
[3-1F, 3-1K] Replacement of Damaged Adapter (163, Figure 203) on Oil Tank Auxiliary Fill
(200)
(1)
Using 20,000 rpm motor and 3 inch diameter, 1/16 inch thick, A36 grit abrasive
wheel, remove weld attaching adapter to oil tank auxiliary fill.
(2)
Remove adapter from oil tank auxiliary fill.
(3)
Remove radial abrasive wheel marks from oil tank auxiliary fill using flat file until only
parent material is visible.
(4)
Clean oil tank auxiliary fill using solvent.
(5)
Install new adapter, orientating slots in adapter that mate with bayonet lugs on filler
plug 90 degrees from lock wire tab on oil tank auxiliary fill.
(6)
Weld adapter to oil tank auxiliary fill using filler rod (CRES 349 or CRES 347) in
accordance with good shop practices.
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 28 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 29 OF 38 THRU PAGE 31 OF 38 FACING 79-10-01, PAGE 231.
Reason:
To change Paragraphs 4.B. thru 4.B. Step (6) and Figure 210, and to add Paragraphs 4.B.
Steps (7) thru (9) and Figure 211 to show the latest repair information.
Paragraphs 4.B. thru 4.B. Step (6) and Figure 210 are changed and Paragraphs 4.B. Steps (7) thru (9) and
Figure 211 are added as follows:
4.
B.
[All except 3-1E] Replacement of Damaged, Loose or Unreadable Instruction Plate
UP784438
NOTE:
In the following step, if removing the filler tube instruction plate (220, Figure
203, or 210, Figure 206 and 207), use caution not to damage the painted
surface of the fan bypass duct.
(1)
Remove instruction plate from oil tank (120, Figure 208), fan bypass duct (220, Figure
203, or 210, Figure 206 and 207), or oil tank auxiliary fill (175, Figure 203), as
applicable. Clean area where instruction plate was removed using solvent or
degreaser.
(2)
Remove paper backing from new instruction plate.
(3)
[Instruction Plate, PN S9002E13T, S9002E14T, S9002E25T, S9002E26T, as
applicable] Activate instruction plate adhesive by applying solvent or degreaser for
10 to 12 seconds.
(4)
[3-1F, 3-1K], [3-1D, 3-1G, 3-1H, 3A-200G, 3B-100S, 3C-100S, 3C-200G, Pre SB
TFE731-79-3070], [3-1J, Pre SB TFE731-79-3074], [3-1C, 3A-2B, 3A-3B, 3C-3B,
Pre SB TFE731-79-3077] Position oil tank instruction plate next to sight glass as
shown in Figure 211 and press down firmly with fingers or roller.
(5)
[3-1D, 3-1G, 3-1H, 3A-200G, 3B-100S, 3C-100S, 3C-200G, Post SB TFE731-793070], [3-1J, Post SB TFE731-79-3074], [3-1C, 3A-2B, 3A-3B, 3C-3B, Post SB
TFE731-79-3077] Position oil tank instruction plate next to sight gage as shown in
Figure 212 and press down firmly with fingers or roller.
(6)
[All except 3-1G, 3-1J, 3A-200G, 3C-200G] Position filler tube instruction plate or
auxiliary fill instruction plate over application area on fan bypass duct and press down
firmly with fingers or roller.
(7)
[3-1F, 3-1K] Position auxiliary instruction plate over application area on oil tank
auxiliary fill and press down firmly with fingers or roller.
(8)
[Instruction Plate, PN S9002E13T, S9002E14T, S9002E26T, as applicable] Apply a
coat of compound (Nycote 7-11) to instruction plate surface and approximately 1/8
inch beyond instruction plate edge.
(9)
[Instruction Plate, PN S9002E13T, S9002E14T, S9002E26T, as applicable] Allow
compound to cure in accordance with Step (a) or (b).
(a)
For 72 hours at room temperature.
(b)
For 1 hour at room temperature and 12 hours at 120°F (49°C), or 8 hours at
150°F (65°C), or 4 hours at 180°F (82°C), or 2 hours at 220°F (104°C), or 1/2
hour at 300°F (149°C).
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 29 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
UP784438
[3-1F, 3-1K], [3-1D, 3-1G, 3-1H, 3A-200G, 3B-100S, 3C-100S, 3C-200G, Pre SB TFE731-79-3070], [3-1J,
Pre SB TFE731-79-3074], [3-1C, 3A-2B, 3A-3B, 3C-3B, Pre SB TFE731-79-3077]
Oil Tank Instruction Plate Installation
Figure 211
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 30 of 38
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RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
UP784438
[3-1D, 3-1G, 3-1H, 3A-200G, 3B-100S, 3C-100S, 3C-200G, Post SB TFE731-79-3070],
[3-1J, Post SB TFE731-79-3074], [3-1C, 3A-2B, 3A-3B, 3C-3B, Post SB TFE731-79-3077]
Oil Tank Instruction Plate Installation
Figure 212
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 31 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
INSERT PAGE 32 OF 38 THRU PAGE 38 OF 38 FOLLOWING 79-10-01, PAGE 231.
Reason:
To add NOTE, Paragraphs 4.C. thru 4.G.(6), Figure 213 and 214 to show the latest repair
information.
NOTE, Paragraphs 4.C. thru 4.G.(6), Figure 213 and 214 are added as follows:
NOTE:
4.
C.
[3-1C, with Liquid Level Gage, PN 361-530-9003, -9004] Refer to Figure 207 and
209, as applicable for component location in the following procedures.
[3-1C, with Liquid Level Gage, PN 361-530-9003, -9004] Repair liquid level gage (155,
Figure 207) as follows.
Replace packing (20, Figure 209) that is worn, cut or cracked.
NOTE:
D.
NOTE:
E.
[3-1C, 3A-2B, 3A-3B, 3C-3B, Pre SB TFE31-79-3077], [3A-2B, 3A-3B, 3C-3B, Post
SB TFE731-79-3077] Refer to Figure 207 and 213, as applicable, for component
location in the following procedures.
[3-1C, 3A-2B, 3A-3B, 3-3B, Pre SB TFE31-79-3077], [3A-2B, 3A-3B, 3C-3B, Post SB
TFE731-79-3077] Repair liquid level gage (160, Figure 207) as follows.
(1)
Replace packing (15, Figure 213) that is worn, cut or cracked.
(2)
[3A-2B, 3A-3B, 3C-3B, Post SB TFE731-79-3077] Replace liquid level gage dipstick
(30, Figure 213) that is kinked, broken and/or has unreadable markings as follows.
(a)
Compress the spring (20) with the dipstick (30) while removing snap ring (25)
securing dipstick (30) to plug (10). Remove dipstick (30) and spring (20) from
plug (10).
(b)
Install spring (20) in filler plug (10). Use replacement dipstick (30) to
compress spring (20) while snap ring (25) is installed. Ensure snap ring (25) is
fully seated in groove of plug (10) (see Figure 213).
Refer to Figure 207 or 213, as applicable, for component location in the following
procedures.
Repair filler plug (165, Figure 207) as follows.
UP784438
Replace packing (15, Figure 213) that is worn, cut or cracked.
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 32 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
+*10.
PLUG
*20.
SPRING
+*15.
PACKING
*25.
SNAP RING
*30.
DIPSTICK
*
+
LIQUID LEVEL GAGE COMPONENTS
FILLER PLUG COMPONENTS
UP784438
Liquid Level Gage/Filler Plug Breakdown
Figure 213
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 33 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
NOTE:
4.
F.
Refer to Figure 203 for component location in the following procedures.
[3-1F, 3-1K, Pre SB TFE731-79-3057] Repair leakage around oil tank auxiliary fill liquid sight
indicator (170) as follows.
CAUTION:
(1)
Remove screws (165) securing liquid sight indicator (170), gasket (180) and ball (185)
to oil tank auxiliary fill (200). Remove liquid sight indicator, gasket and ball from oil
tank auxiliary fill.
(2)
Remove all residue of compound (from last assembly operation) from gasket mating
surfaces of oil tank auxiliary fill, liquid sight indicator, and threads of screws using
solvent or degreaser.
(3)
Install ball (185) on oil tank auxiliary fill (200).
NOTE:
(4)
[Post SB TFE731-79-3056] Application of compound (sealant) on gasket (180)
not required.
[Pre SB TFE731-79-3056] Apply a thin coat of compound (sealant) to each side of
gasket (180).
CAUTION:
Install gasket (180) and liquid sight indicator (170) onto oil tank auxiliary fill (200) and
secure with screws (165). Install screws until screw heads just bottom on liquid sight
indicator.
(6)
Tighten screws (165) in sequence shown in Figure 214 to 5 in-lbf torque. After each
tightening sequence, increase torque 5 in-lbf until 40 in-lbf torque is attained on each
screw.
(7)
[Pre SB TFE731-79-3056] Ensure the compound (sealant) is not visible on the lens of
liquid sight indicator after final torqueing sequence.
(8)
Seal oil tank auxiliary fill ports and pressurize auxiliary fill at 4.5 to 4.8 psig. Immerse
auxiliary fill in water and observe that no air leakage occurs at liquid sight indicator. If
leakage occurs, remove liquid sight indicator components from auxiliary fill and repeat
the installation procedures until no air leaks occur.
Refer to Figure 203 for component location in the following procedures.
[3-1F, 3-1K, Post SB TFE731-79-3057] Repair leakage around oil tank auxiliary fill liquid level
gage (172) as follows.
CAUTION:
(1)
UP784438
IMPROPER INSTALLATION OF SCREWS (165) MAY RESULT IN
BREAKAGE OF LIQUID SIGHT INDICATOR (170) LENS.
(5)
NOTE:
G.
WHEN PERFORMING THE FOLLOWING STEP ENSURE TAPE IS
INSTALLED OVER LENS OF LIQUID SIGHT INDICATOR AND OIL TANK
AUXILIARY FILL IS INVERTED OR GLASS COULD GET INTO AUXILIARY
FILL IF LENS SHOULD BREAK DURING REMOVAL.
WHEN PERFORMING THE FOLLOWING STEP ENSURE TAPE IS
INSTALLED OVER LENS OF LIQUID LEVEL GAGE AND OIL TANK
AUXILIARY FILL IS INVERTED OR GLASS COULD GET INTO AUXILIARY
FILL IF LENS SHOULD BREAK DURING REMOVAL.
Remove screws (167) securing liquid level gage (172) to oil tank auxiliary fill (200).
Remove gage and assembled packing (182) and ball (185) from oil tank auxiliary fill
(200). Discard packing.
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 34 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
NOTE:
4.
G.
Packing mating surface must be clean (no sealant or compound) and free of
defects.
(2)
Install ball (185) on oil tank auxiliary fill (200).
(3)
Install packing (182) onto liquid level gage (172) without sealant.
UP784438
CAUTION:
IMPROPER INSTALLATION OF SCREWS (167) MAY RESULT IN
BREAKAGE OF LIQUID LEVEL GAGE (172) LENS.
(4)
Install liquid level gage (172) with packing (182) on oil tank auxiliary fill (200) and
secure with screws (167). Install screws until screw heads just bottom on liquid level
gage.
(5)
Tighten screws (167) in sequence shown in Figure 214 to 5 in-lbf torque. After each
tightening sequence, increase torque 5 in-lbf until 30 in-lbf torque is attained on each
screw.
(6)
Seal oil tank auxiliary fill ports and pressurize auxiliary fill at 4.5 to 4.8 psig. Immerse
auxiliary fill in water and observe that no air leakage occurs at liquid level gage. If
leakage occurs, remove liquid level gage components from auxiliary fill and repeat the
installation procedures until no air leaks occur.
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 35 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
NOTE:
4.
H.
Refer to Figure 208 for component location in the following procedures.
[Pre SB TFE731-79-3057] Repair leakage around oil tank liquid sight indicator (105) as
follows.
CAUTION:
(1)
Remove screws (100) securing liquid sight indicator (105), gasket (115) and ball (110)
to oil tank (125). Remove liquid sight indicator, gasket and ball from tank.
(2)
Remove all residue of compound (from last assembly operation) from gasket mating
surfaces of oil tank, liquid sight indicator, and threads of screws using solvent or
degreaser.
(3)
Install ball (110) on oil tank (125).
NOTE:
(4)
[Post SB TFE731-79-3056] Application of compound (sealant) on gasket
(115) not required.
[Pre SB TFE731-79-3056] Apply a thin coat of compound (sealant) to each side of
gasket (115).
CAUTION:
Install gasket (115) and liquid sight indicator (105) onto oil tank (125) and secure with
screws (100). Install screws until screw heads just bottom on liquid sight indicator.
(6)
Tighten screws (100) in sequence shown in Figure 214 to 5 in-lbf torque. After each
tightening sequence, increase torque 5 in-lbf until 40 in-lbf torque is attained on each
screw.
(7)
[Pre SB TFE731-79-3056] Ensure the compound (sealant) is not visible on the lens of
liquid sight indicator after final torqueing sequence.
(8)
Seal oil tank ports and pressurize oil tank at 4.5 to 4.8 psig. Immerse oil tank in water
and observe that no air leakage occurs at liquid sight indicator. If leakage occurs,
remove liquid sight indicator components from oil tank and repeat the installation
procedures until no air leaks occur.
Refer to Figure 208 for component location in the following procedures.
[Post SB TFE731-79-3057] Repair leakage around oil tank liquid level gage (107) as follows.
CAUTION:
(1)
(2)
WHEN PERFORMING THE FOLLOWING STEP ENSURE TAPE IS
INSTALLED OVER LENS OF LIQUID LEVEL GAGE AND OIL TANK IS
INVERTED OR GLASS COULD GET INTO OIL TANK IF LENS SHOULD
BREAK DURING REMOVAL.
Remove screws (102) securing liquid level gage (107) to oil tank. Remove gage and
assembled packing (117) and ball (110) from oil tank (125). Discard packing.
NOTE:
UP784438
IMPROPER INSTALLATION OF SCREWS (100) MAY RESULT IN
BREAKAGE OF LIQUID SIGHT INDICATOR (105) LENS.
(5)
NOTE:
I.
WHEN PERFORMING THE FOLLOWING STEP ENSURE TAPE IS
INSTALLED OVER LENS OF LIQUID SIGHT INDICATOR AND OIL TANK IS
INVERTED OR GLASS COULD GET INTO OIL TANK IF LENS SHOULD
BREAK DURING REMOVAL.
Packing mating surface must be clean (no sealant or compound) and free of
defects.
Install ball (110) on oil tank (125).
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 36 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
4.
I.
(3)
Install packing (117) onto liquid level gage (107) without sealant.
UP784438
CAUTION:
IMPROPER INSTALLATION OF SCREWS (102) MAY RESULT IN
BREAKAGE OF LIQUID LEVEL GAGE (107) LENS.
(4)
Install liquid level gage (107) with packing (117) on oil tank (125) and secure with
screws (102). Install screws until screw heads just bottom on liquid level gage.
(5)
Tighten screws (102) in sequence shown in Figure 214 to 5 in-lbf torque. After each
tightening sequence, increase torque 5 in-lbf until 30 in-lbf torque is attained on each
screw.
(6)
Seal oil tank ports and pressurize oil tank at 4.5 to 4.8 psig. Immerse oil tank in water
and observe that no air leakage occurs at liquid level gage. If leakage occurs, remove
liquid level gage components from oil tank and repeat the installation procedures until
no air leaks occur.
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 37 of 38
18 Feb 2019
RELEASED FOR THE EXCLUSIVE USE BY: WELTALL-AVIA OOO
LIGHT MAINTENANCE MANUAL
TFE731-3 (ATA NUMBER 72-02-15)
TEMPORARY REVISION NO. 79-11
UP784438
Screw Tightening Sequence
Figure 214
79-10-01
© Honeywell International Inc. Do not copy without express permission of Honeywell.
Page 38 of 38
18 Feb 2019