Thread Repair Kit

THREAD REPAIR KIT

- TOOLS REQUIRED
- J42385-850 Thread Repair Kit





The Time Sert thread repair process involves a solid bushing type insert. The insert is made of carbon and is self-locking. During the bushing installation process, the driver tool expands the bottom external threads of the insert into the base material. This action mechanically locks the insert in place. Also when installed to the proper depth, the flange of the insert will be seated against the counter-bore of the repaired hole.

CAUTION: WEAR SAFETY GLASSES IN ORDER TO AVOID EYE DAMAGE.

IMPORTANT: The use of a cutting type fluid GM P/N 1052864, WD 40, or equivalent is recommended when performing drilling, counter-boring, and tapping procedures.

Driver oil must be used on installer driver tool.
The tool kits are designed for use with either a suitable tap wrench or drill motor.





1. Drill out threads of damaged hole.
- M6 inserts require a minimum drill depth of 15 mm (0.59 inch).
- M8 inserts require a minimum drill depth of 20 mm (0.79 inch).
- M10 inserts require a minimum drill depth of 23.5 mm (0.93 inch).
2. Using compressed air, clean out any chips.





3. Counter-bore hole to full depth permitted by tool.
4. Using compressed air, clean out any chips.





5. Using a tap wrench, tap threads of drilled hole.
- M6 inserts require a minimum tap depth of 15 mm (0.59 inch).
- M8 inserts require a minimum tap depth of 20 mm (0.79 inch).
- M10 inserts require a minimum tap depth of 23.5 mm (0.93 inch).
6. Using compressed air, clean out any chips.
7. Spray cleaner GM P/N 12346139, P/N 12377981 or equivalent into holes.
8. Using compressed air, clean any cutting oil and chips out of drilled hole.

IMPORTANT: Do not allow oil or other foreign material to contact Outside Diameter (OD) of insert.





9. Lubricate threads of installer tool with drive oil.





10. Install insert onto installer tool.





11. Apply threadlock Loctite 277, J-42385-109 or equivalent to insert OD threads.

IMPORTANT: Installer tool will tighten up before screwing completely through insert. This is acceptable. You are forming bottom threads of insert and mechanically locking insert to base material threads.





12. Install insert into hole.
12.1. Install insert until flange of insert contacts counter-bored surface.
12.2. Continue to rotate installer tool through insert.

IMPORTANT: A properly installed insert will be either flush or slightly below flush with surface of base material.





13. Inspect insert for proper installation into hole.