MODEL 1550
Case 150 net horsepower (111.8 kW) diesel
Hydrostatic transmission
Four dozer versions available
1550 BASIC TRACTOR
ENGINE
Make and model . . . . . . . . . .Case 6T-830
Type of fuel. . . . . . . . . . . . . . . .No. 2 diesel
No. of cylinders . . . . . . . . . . . . . . . . . . . . 6
Bore and stroke. . . . . . . . . . . 4.49" x 5.32
(114 mm x 135 mm)
Displacement. . . . . . .504.5 in3(8267 cm3)
Compression ratio. . . . . . . . . . . . . . .17.3:l
Fuel induction . . . . . . . . . . . ..Injectors (6)
Fuel supply. . . . . . . . . . . . . Injection pump
Air cleaner . . . . . Dry type-dual element
with service indicator
Oil filter . . . . . . . . . . .Full-flow, replaceable
spin-on cartridge
Lubrication . . . . . . . . . . .positive pressure
Cooling system . . . . .Pressurized-15 psi
(103 kPa)
Horsepower
(1) Gross . . . . . . . . . ..I68 @ 2100 rpm
(125 kW @ 2100 rlmin)
(2) SAE Net . . . . . . . . . 150 @2100 rpm
(111.8 kW @ 2100 rlmin)
Max torque ft-lb
(1) Gross . . . . . . . . . ..538 @ 1500 rprn
(729 Nm @ 1500 rlmin)
(2) SAE Net . . . . . . . . .511 @ 1500 rpm
(693 Nm @ 1500 rlmin)
(1) Gross engine horsepoweror torque at flywheel per
SAE Standard J1349.
(2) Net engine horsepower or torque at flywheel per
SAE Standard J1349.
ELECTRICAL
System voltage .24-volt, negative ground
Batteries (2). . . .12-volt, low maintenance
950 cold cranking amps @ 0°F ( - 18°C)
Alternator . . . . . . . . . . . . ..24-volt, 45 amp
STEERING
Steering controlled by hydrostatic power.
Infinitely variable speed to each track is
controlled by foot pedal.
POWER TRAIN
Transmission: Dual path hydrostatic
transmission.
Brakes: Two multiple disc, spring applied,
hydraulically released brakes. Overcenter hand control for parking and center
pedal foot control for inching.
Final drives: Double reductionwith planetary output.
Filtration: Three pressure spin-on cartridges, B2=2.0rating. Inlet line strainer, 200
mesh.
Cooling: Side by side radiator cooling, airto-oil.
TRAVEL SPEEDS MPH (krnlh)
Engine at full throttle
ForwardIReverse- Infinite from 0 to 6.5
(0 to 10.5)
POWER CURVE
DRAWBAR PULL
(266) 60
(244) 55
;Cmo)45
g (177) 40
(155)35
(133)30
(111)25
'
0
1
2
(1.6) (3.2)
3
(4.8)
4
5
6
7
VEHICLE SPEED-MPH (W)
1500
2UOO
2300
ENGINE SPEED-RPM (rlmin)
~EW;WEpaFoAyI)3a
NET ENGINE PERFORMANCE
8
(6.4) (8.0) (9.6) (11.2)(12.8)
UNDERCARRIAGE
Sealed track standard, sealed and lubricated track optional. Hydraulic track
adjusters. Track rollers, carrier rollers,
drum type idlers permanently lubricated.
Segmented hunting tooth sprockets. Reinforced box section track roller frame.
Track frame . . . . . . . . . . . Equalizer beam
suspension
Track rollers (each side) . . . . . . . . . . . . ..6
Carrier rollers (each side). . . . . . . . . . . . . 2
Track gauge. . . . . . . . . . . . . ..74" (1.88 m)
Length of track on ground. . . 9 4 (2.39 m)
Shoes per track (each side) ......... .36
Track shoe widths available . 20",22, 24"
(508 mm, 559 mm, 610 mm)
Area track on ground
2 0 (508 mm) ... 3760 in2(24 252 cm2)
2 2 (559 mm) ... .4136 in2(26 677 cm2)
2 4 (610 mm) . . . ,4512 in2(29 102 cm2)
Ground pressure (Angle, tilt, pitch dozers)
20" (508 mm) ........ -8.8psi (61 kPa)
2 2 (559 mm) . . . . . . . . .8.1 psi (56 kPa)
2 4 (610 mm) . . . . . . . ..Z5 psi (52 kPa)
Height of track shoe
Heavy-duty grouser . . . . 2.81" (72 mm)
LGP TILT DOZER
Sealed and lubricated track standard. Permanently sealed and lubricated track
rollers, carrier rollers, drum-type idlers.
Hydraulic track adjusters. Segmented
hunting tooth sprockets. Reinforced box
section track roller frame.
Track frame . . . . . . . . . . . Equalizer beam
suspension
Track rollers (each side) ............. . 7
Carrier rollers (each side). . . . . . . . . . . ..2
Track gauge ...............78" (1.98 m)
Length of track on ground. ......... 106
(2.69 m)
Shoes per track (each side). ........ .39
Max. track shoe width. . . . . . 3 6 (914 mm)
Area track on ground ......... .7632 in2
(49 266 cm2)
Ground pressure. ...... .4.6 psi (31 kPa)
Height of track shoe
Single bar. . . . . . . . . . . . .2.36 (60 mm)
Self cleaning . . . .
.... -3"(76mm)
1550 BASIC TRACTOR
DOZER HYDRAULICSYSTEM
Full hydraulic control of blade lift, lower,
angle, tilt and pitch functions. Positive-hold
"float" position in lift circuit.
Pump: Gear type, driven from engine, 42
gprn @ 2100 rprn (157 litlrnin @ 2100 rlrnin)
Control valve: Open center, parallel with
pressure compensation.
System relief pressure . . . . . . . ,2500 psi
(17 237 kPa)
CYLINDERS
Tilt Dozer
Lift (2) . . . . . 3 . 5 dia x 37" stroke, 2" rod
(89 rnrn dia x 940 mm stroke, 51 mm rod)
Tilt (2) . . . . . . 6" dia x 6 . 7 stroke, 3 rod
(152 rnrn dia x 170 mm stroke, 76 rnrn rod)
Mech. Angle Dozer
Lift (2) . . . 3 . 5 dia x 35.6 stroke, 2" rod
(89 rnrn dia x 904 mm stroke, 51 rnrn rod)
Mech. Angle w1Tilt Dozer
Lift (2). . . 3 . 5 dia x 35.6 stroke, 2" rod
(89 rnrn dia x 904 rnrn stroke, 51 rnrn rod)
Tilt (2). . . . 5 dia x 4 . 5 stroke, 2.5 rod
(127 rnrn dia x 114 rnrn stroke, 69 rnrn rod)
AngleITilVPitch Dozer
Lift (2) . . . 3 . 5 dia x 35.6 stroke, 2" rod
(89 rnrn dia x 904 rnrn stroke, 51 rnrn rod)
Angle (2) . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 dia x 54.95 stroke, 2.25 rod
(102 rnrn dia x 1.40 rn stroke, 57 rnrn rod)
Tilt (2) . . . . 5 dia x 4 . 5 stroke, 2 . 5 rod
(127 rnrn dia x 114 rnrn stroke, 64 rnrn rod)
SERVICE CAPACITIES
U.S. Gals
Fuel tank.. . . . . . . . . . . . . . . . .76
Hydraulic system (refill). . . .20.7
Transmission (total). . . . . . . . .28
(refill) . . . . . . . 14.7
Engine crankcase . . . . . . . . . . . 6
Final drive (each side) . . . 15 qts
Cooling system . . . . . . . . . . . .6.5
Litres
287.7
78.3
106
55.6
22.7
14.2
24.6
STANDARD EQUIPMENT
Dry-type dual element air cleaner with
service indicator Alternator and voltage
regulator Reversible fan Lock-up kit
Master disconnect switch Neutral
safety start mechanism Electronic instrumentation Suspension seat Springapplied, hydraulically released parking
brake Permanently lubricated track
rollers Sealed track Hydraulic track
adjusters Engine side shields Full bottom transmission guard Crankcase
guard Radiator guard Rear transmission guard Muffler ROPS canopy with
seatbelt Track guides Halogen
worklights Drawbar.
STANDARD EQUIPMENTLGP Version
Dry-type dual element air cleaner with
service indicator Alternator and voltage
regulator Reversible fan Lock-up kit
Master disconnect switch Neutral
safety start mechanism Electronic instrumentation Suspension seat Springapplied, hydraulically released parking
brake Permanently lubricated track
rollers Sealed and lubricated track
Hydraulic track adjusters Engine
side shields Full bottom transmission
guard Crankcase guard Radiator guard
Rear transmission guard Muffler
ROPS canopy with seatbelt Track
guides Halogen worklights Drawbar.
IHYDRAULIC ANGLEmLTIPKCH
DOZER SPECIFICATIONS
Dozer Blade
.
Width . . . . . . . . . . . . . . . . . .I48
(3.76m)
Height. . . . . . . . . . . . . . . . . . . . 40"(1.02m)
Lift above ground . . . . . . . . 3 8 (965mm)
Drop below ground . . . . . . . 20"(508mm)
Angle, hydraulicboth directions.. . . . . . . . . . . . . . . . . 25"
Tilt, hydraulicboth directions. . . . . . . . . .I5(381 mm)
Pitch, hydraulicboth directions. . . . . . . . . . . . . . . . . . .5"
C-frame . . . . . . . . . . . . . . . . . . . . .Outside
16'7.2"(5.06rn)
+
*
End Bits (Replaceable)
Standard Duty
Length.. ...............17.4(442mm)
Width ....................8"(203mm)
Thickness ...............0.75(19mm)
Heavy Duty
Length.. .............. .19.8(503mm)
Width.. ................ .9.5(241 mm)
Thickness.. ............... .I"(25mm)
Cutting Edge (Reversible)
Length. ................. .113"(2.87m)
Width ................... . 8 (203mm)
Thickness .............. .0.75(19mm)
Maximum track shoe allowable
. . . . . . . . . . . . . . . . . . . . . .. 2 4(610mm)
Tractor Dozer Dimensions
4 Overall length
with ripper raised. . . . . . . 19'9 (6.02m)
with blade straight. ... .16'7.2(5.06m)
with blade angled . . . . 19'3.3 (5.88m)
less "C" frame and blade . . . . . . . . . . . .
11 '4.9(3.48rn)
Overall width
with blade straight ..... .148" (3.76m)
with blade angled ..... 137.3(3.49m)
at track with 20"(508mm) shoes .. . 9 4
(2.39m)
Turning clearance circle
counter-rotate turn ...... .24'(7.32m)
Ground clearance ...... .14.2"(361 mm)
Operating weight (approx)*
................. 33,100Ibs (15014 kg)
'Includes ROPS, full tank of fuel, 170 Ibs (77 kg)
operator and 20" (508 mm) shoes.
.a
CYIENSIONAL DATA-
MECHANICAL ANGLE DOZER
MECHANICAL ANGLE
DOZER SPECIFICATIONS
Dozer Blade
Width . . . . . . . . . . . . . . . . . .,148"(3.76rn)
Height. . . . . . . . . . . . . . . . . . . .40"(1.02rn)
(978mrn)
Lift above ground ...... -38.5"
Drop below ground . . . . . . 19.5"(495mm)
Angleboth directions. ................ .25"
'Tilt, hydraulicboth directions. . . . . . . . ..15"(381mrn)
C-frarne . . . . . . . . . . . . . . . . . . . . .Outside
^Available only on Mechanical Angle Hydraulic Tilt
........ ,..... r-. .7.1.-2.-,\
Model
.,
.7.1
.
End Bits (Replaceable)
.
Standard Duty
Length.. .............. .17.4"(442rnm)
Width .................... 8(203mrn)
Thickness .............. .0.75(19mm)
Heavy Duty
Length. ................19.8"(503rnrn)
Width. ................. .9.5(241 mm)
Thickness.. ................I"(25rnrn)
Cutting Edge (Reversible)
Length. ..................113"(2.87m)
Width .................... 8(203rnrn)
Thickness .............. .0.75"(19rnrn)
Maximum track shoe allowable
...................... .24"(610mm)
Tractor Dozer Dirnensions.:r~..d~:
-.- . . . . .:.-.
+Overall length
with ripper raised. . . . . . .19'9"(6.02m)
with blade straight. . . . .16'7.2(5.06rn)
with blade angled . . . . 19'3.3"(5.88m)
less "C" frame and blade ...... 11 '4.9
(3.48m)
Overall width
with blade straight . . . . . .148"(3.76m)
with blade angled .... .137.3"(3.49m)
at track with 20" (508mm) shoes .. .94"
(2.39m)
Turning clearance circle
counter-rotate turn ...... .24' (7.32m)
Ground clearance .......14.2"(361 rnm)
Operating weight (approx)"
,..__. ...... . 3 2 0lbs (14542 kg)
'Includes ROPS, full tank of fuel, 170 Ibs (77 kg)
operator and 20" (508 mm) shoes.
DIMENSIONAL DATA-HYDRAULIC
- -- -
TILT DOZER
--.
__
.-
11'4.9"(3.48rn)
..
_ __ -_
-
HYDRAULIC TlLT
DOZER SPECIFICATIONS
Dozer Blade
Width . . . . . . . . . . . . . . . . . . . ..121"(3.1m)
Height. . . . . . . . . . . . . . . . . ..44.5(1.13m)
Liff above ground . . . . . . . . . .4OV(1.02m)
Drop below ground . . . . . .. 2 0(508mm)
Tilt, hydraulicboth directions. . . . . . . . . .I5 (381 rnm)
Pushbearn . . . . . . . . . . . . . . . . . . . .Outside
-
--
-.
. .
15'10.8 (4.85rn)
+
End Bits (Replaceable)
. '
Standard Duty
Length.. .............. .16.9(429 mm)
Width . . . . . . . . . . . . . . . . . . .. 8 (203mm)
Thickness . . . . . . . . . . . . . ..0.75(19mrn)
Heavy Duty
Length.. . . . . . . . . . . . . . . .18.4(467mm)
Width . . . . . . . . . . . . . . . . . ..9.5(241 mm)
Thickness.. . . . . . . . . . . . . . . ..I"(25 mm)
Cutting Edge (Reversible)
Length. . . . . . . . . . . . . . . . . . ..87"(2.21m)
Width . . . . . . . . . . . . . . . . . . ..8" (203mm)
Thickness .............. .0.75(19mm)
Maximum track shoe allowable
....................... 2 4(610mm)
1.
a
b
Tractor Dozer Dimensions
+Overall length
with ripper raised. . . . . . 18'10 (5.69m)
with blade straight. . . .15'10.8(4.85m)
less push beam and blade. . . . . 11 '4.9
(3.48m)
Overall width
with blade straight. . . . . . . ,121"(3.1m)
at track with 2 0 (508mm) shoes . . . 9 4
(2.39m)
Turning clearance circle
counter-rotate turn . . . ..2117" (6.58rn)
Ground clearance .. .% . .14.2(361 mm)
Operating weight (approx)*
. . . . . . . . . . . . . . . 31,590Ibs (14329 kg)
'Includes ROPS, full tank of fuel, 170 Ibs (77 kg)
operator and 20" (508 mm) shoes.
DIMENSIONAL DATA- HYDRAULIC TlLT DOZER- LGP
HYDRAULIC TlLT
DOZER SPECIFICATIONS
Dozer Blade
Width.. . . . . . . . . . . . . . . . . . ..I36(3.5m)
Height. . . . . . . . . . . . . . . . . ..44.5" (1.13m)
Lift above ground . . . . . . . . . .40" (1.02m)
Drop below ground ...... .20(508mm)
Tilt, hydraulicboth directions. . . . . . . . ..17"(432mm)
Pushbeam ......
. . . . . . .Outside
End Bits (Replaceable)
Standard Duty
Length.. .............. .16.9(429mm)
Width .................... 8 (203mm)
Thickness.. . . . . . . . . . . . . .0.75"(19mm)
Heavy Duty
Length. . . . . . . . . . . . . . . ..18.4"(467mm)
Width . . . . . . . . . . . . . . . . . ..9.5"(241 mm)
Thickness.. . . . . . . . . . . . . . . ..I"(25mm)
Cutting Edge (Reversible)
Length .................. . 9 9 (2.52m)
Width ................... . 8 (203mm)
Thickness.. ............ .0.75"(19mm)
Maximum track shoe allowable
...................... .36"(914mm)
Ractor Dozer Dimensions
+Overall length
with blade straight. . . . 16'10.7"(5.15m)
less push beam and blade. . . . . 12'4.9
(3.78m)
Overall width
with blade straight. . . . . . . .I36(3.5m)
at track with 36" (914mm) shoes
.......................I14(2.90m)
Turning clearance circle
counter-rotate turn. ... .22'11n(6.98m)
Ground clearance. ..... .13.9"(353mm)
Operating weight (approx)*
................ .35,340Ibs (16 030 kg)
'Includes ROPS, full tank of fuel, 170 Ibs (77 kg)
operator and 3 6 (914 mm) shoes.
1550 TRACTOR
OPTIONAL EQUIPMENT
Approximate
add-on welght
Ibs
kg
Air conditioning ............ 310 140.6
Back-up alarm. .............. 5
2.3
Brush screen.. . . . . . . . . . . . . . 13
5.9
Cab.. . . . . . . . . . . . . . . . . . . . 1700 771
Ether starting kit ............. 4
1.8
ROPS side screens. ........ 185 83.9
Front pull hook. ............ .20
9.1
Horn . . . . . . . . . . . . . . . . . . . . . . . 5
2.3
Pyramid grousers
36(914mm) .......... ,4914 2229
Ripper. ..................3000 1361
Rock guards. ............. ,646 293
Track shoes, heavy duty
20" (508 mm) .......... ,2923 1143
22"(559mm). ..........3218 1460
2 4 (610 mm) ...........3507 1591
36"(914mm). .......... 4914 2229
RIPPER
Overall width. ........... .78.1r' (1.98 m)
Maximum penetration. .. .18.1M(460 mm)
Ground clearance
(at cam)........... .10.9" (277 mm)
Number of shanks .................. .3
Shank spacing
Inner.. ............ .17.75" (450 mm)
Outer.. ............ .19.25" (489 mmJ
Ripper tips.. .............. Replaceable
:
.. .. ... ... 4" dia x 1'0' stroke, 2r rod
(102 Imrn dim x 2% mm sbke, 51 rnm rod)
Weight ............. .3000 Ibs (1361 kg)
Sold and serviced by:
NOTE: All specifications are stated in accordance
with ICED Definitions or SAE Standards or Recornmended Practices, where applicable.
IMPORTANT
JI Case reserves the right to change these specifications without notice and w~thoutincurring any obligation relating to such changes. Unit illustrated on front
cover is equipped with non-standard equ~pment.
J
l Case
A Tenneco Company
700 State Street Racine, WI 53404 U.S.A.
Building On ~ u a l i t y "
Form No. CE32987
Printed in U.S.A.