TIME-SERT®
THREAD REPAIR
SYSTEM
SEPTEMBER 2012
Product Catalog
07.0520 - 07.0565
Advantages of TIME-SERT®
TIME-SERT® is a solid
bushing insert
This guarantees easy installation and allows for full load use of tapped
TIME-SERT® is thinwalled
This is due to synchronized internal and external threads. Thin cross
TIME-SERT® has
positive placement
Having a flange on the top of the insert will insure that the insert will have
TIME-SERT® is self
locking
On installation the bottom internal threads of the insert are cold rolled
hole, ensuring protection against stress and vibration.
sectional area allows for installation in areas of limited space and
clearance material.
positive placement and cannot wind down into the newly repaired hole.
to expand the mating external threads into the base material locking the
insert in place. Locking mechanism is at the bottom of the insert.
GM Auto Application
© 2012 WURTH USA, Inc.
Revision 09/2012 - GM_TIMESERT
•
Motor - Spark plug threads, stud bolt
threads
•
Aggregates - Attachments of servo
pump, alternator, compressor
•
•
•
•
Transmission - Gear cover, brackets
Differential - Stud bolts
Axles - Attaching parts, brackets
Body
Kit Content & Installation Steps
Kit Contents:
A HSS Drill Bit
B Counterbore
C Tap
D Installation Driver
E (5) Steel Inserts
Use of cutting fluid
is recommended for
A
1
B
2
C
3
D
4
E
5
Step 1: Drill out the damaged thread all the way to the
bottom using HSS drill bit A. Be sure to keep the borehole aligned.
drilling, counterboring,
and tapping.
Cut + Cool Cutting
and Drilling Oil
Step 2: Machine the borehole with seat cutter B deep enough
that the depth stop gets in contact with the work piece.
© 2012 WURTH USA, Inc.
Revision 09/2012 - GM_TIMESERT
Step 3: Using thread tap C, cut the thread for the TIME-SERT
bushing. Be sure to keep the borehole aligned.
Step 4: Blow out the shavings. Lubricate insertion tool D and
screw in bushing manually into the TIME-SERT thread.
Step 5: Once the bushing sits flush with the surface, the remaining threads are formed using the insertion tool D. The repair
is complete when the tool can be turned with less resistance.
Art # 0893050004
TIME SERT® Master Assortments
All TIME-SERT® Master Kits include the
following:
• Drill
• Insert Driver
• Counterbore
• Insert Driver Oil
• Tap
• Multi Lube 350
• Inserts
• Sturdy Metal Box TIME-SERT® Master Kits are approved by GM.
© 2012 WURTH USA, Inc.
Revision 09/2012 - GM_TIMESERT
TIME-SERT® Master Kits contain: 5 complete tool kits, 5 inserts of each size, 50 inserts total.
Metric Coarse - Art # 196406617
Metric Fine - Art # 1964066171
Size
Thread
Length
Size
Thread
Length
M5
0.8
7.6 mm
M5
0.8
7.6 mm
M5
0.8
10.0 mm
M5
0.8
10.0 mm
M6
1.0
9.4 mm
M6
1.0
9.4 mm
M6
1.0
12.0 mm
M6
1.0
12.0 mm
M8
1.25
11.7 mm
M8
1.25
11.7 mm
M8
1.25
16.2 mm
M8
1.25
16.2 mm
M10
1.5
14.0 mm
M10
1.25
16.2 mm
M10
1.5
20.0 mm
M10
1.25
20.0 mm
M12
1.75
16.2 mm
M12
1.5
15.0 mm
M12
1.75
24.2 mm
M12
1.5
19.0 mm
Inch Coarse - Art # 196406619
Inch Fine - Art # 1964066191
Size
Thread
Length
Size
Thread
Length
1/4"
20
.38"
1/4"
28
.38"
1/4"
20
.50"
1/4"
28
.50"
5/16"
18
.45"
5/16"
24
.45"
5/16"
18
.62"
5/16"
24
.62"
3/8"
16
.52"
3/8"
24
.52"
3/8"
16
.75"
3/8"
24
.75"
7/16"
14
.60"
7/16"
20
.60"
7/16"
14
.87"
7/16"
20
.87"
1/2"
13
.62"
1/2"
20
.62"
1/2"
13
1"
1/2"
20
1"
Conversion Table
.38 = 3/8”
.45 = 29/64”
.50 = 1/2”
.52 = 33/64”
.60 = 19/32”
.62 = 5/8”
.75 = 3/4”
.87 = 7/8”
North Star Head Bolt Thread Repair Kit M11 X 1.5
This block has 1 depth for all head bolt
holes. This is measured from the top
of the block to the first starting thread
35mm. Last year for this block is 1999.
• For repairing head blots on the
North Star 4.0/4.6 engines
• Includes 10 Replacement Inserts
(Art # 0663111530)
• Easy step-by-step instructions
included
• Insert Length: 30mm
• Major Top Diameter: .516
Art # 066111159
North Star Head Bolt Oversize / 2nd Repair Kit 11 x 1.5
• For repairing head blots on the
North Star 4.0/4.6 engines
• Includes 5 Replacement Inserts
(Art # 0663111507)
• Easy step-by-step instructions
included
• Insert Length: 30mm
© 2012 WURTH USA, Inc.
Revision 09/2012 - GM_TIMESERT
• Major Top Diameter: .634
Art # 066111160
WARNING: Cutting tools may shatter if broken.
The wearing of safety glasses is required in the
vicinity of their use.
BIG-SERT® Kit 
•
BIG-SERT® is a heavy wall solid bushing. Easy
to install with positive placement.
•
•
For repair of Spark Plug Threads
M14 X 1.25. If repair with TIME-
BIG-SERT® gives increased load protection for
SERT® is no longer possible.
critical use.
• Threads which have been
BIG-SERT® will repair oversize holes which
have previously been repaired.
prviously repaired or cut too big
can be renewed with the BIGSERT® thread repair kit
• The BIG-SERT® insert comprises
a 4-fold torque out lock
• The BIG-SERT® external thread
is M18 X 1.5, the internal thread
M14 X 1.25
• Maximum diameter for repair
should be 16.3mm or 0.64”
respectively
NOTE: Kit does not contain inserts or sealer - order separately.
Art # 0661118
© 2012 WURTH USA, Inc.
Revision 09/2012 - GM_TIMESERT
Application
Step 1
Step 2
Using the T-handle wrench and the step reamer,
ream the hole to the full depth permitted by the
stop collar. Keep the reamer as square as possible to the hole.
Use the piloted tap and tap the hole. Keep
the tap as square as possible. Thoroughly
clean and dry the hole.
Step 3
Step 4
Hold the insert setting tool and use hex wrench
to lightly tighten the socket head cap screw.
Screw the insert onto the setting tool. Apply a
small amount of high temperature sealer around
the bottom few threads of the insert. Use a 5/8”
socket to screw the insert firmly into the prepared
hole. Release cap screw with hex key. Then use
a 5/8” socket and remove the setting tool.
Use oil on this tool. Use the T-handle wrench
to rotate the insert driver through the insert.
When the driver tightens up, continue to
rotate the driving tool until it loosens up.
Remove the tool by backing it out or screwing it through the insert.
TIME-SERT® Spark Plug Kits / Inserts 
Kit Size
Kit Art #
M10 x 1.0
Art # 06610101
M12 x 1.25
Art # 0661012125
M14 x 1.25
Art # 0661014125
Spark Plug Types
NOTE: Spark Plug Kits do not include inserts.
Taper Seat
© 2012 WURTH USA, Inc.
Revision 09/2012 - GM_TIMESERT
Application
Washer Seat
Sealer
This sealer must be used when installing
taper seat inserts.
Step 1
Step 2
Start step tap into the
hole to be repaired.
Use the wrench and
tap new threads.
Continue to tap through
until the cutting edges
are approximately
1/4” below surface.
Step 3
Step 4
Step 5
Leave the step tap in the
hole and place the seat
cutter over the shank.
Using the wrench, rotate
the seat cutter. After a
few turns, lift the seat
cutter to inspect the
seat. Repeat operation until the seat is
completely cleaned up.
Back the step tap from
the hole while removing
any burrs from the top
thread.
Lubricate the insert driver
and start insert into hole.
Use the wrench and rotate
the driver through the insert.
When the insert is seated
the driver will tighten up.
With increased pressure
continue to rotate the driver
until it loosens up. Remove
driver tool.
Repair is complete. Solid
steel treads are
square to the
reconditioned
seat, insuring
a good spark
plug seal.
Insert Driver Oil
This oil is superior for installing inserts.
TIME-SERT THREAD REPAIR SYSTEM
®
WURTH USA Inc.
93 Grant Street
Ramsey, NJ 07446
1-800 WURTH USA (987-8487)
www.wurthusa.com
© WURTH USA Inc. 2012
Printed in New Jersey
The information enclosed is privileged and confidential property of
WURTH USA, Inc. Any dissemination, distribution or copying of this communication is strictly prohibited.