Detroit Diesel — Installation of Threaded Plugs
Installation · Rear oil gallery threaded plugs
From a Detroit Diesel service manual — check it applies to your exact model before use.
Before you start
- Note the direction of the oil pressure limiting valve. Incorrect installation can cause oil pressure problems.
Procedure
- Test the condition of the tapped holes by installing a threaded plug by hand. If the plugs bind or stop prematurely, inspect and make any necessary repairs to the threads.
- Install the seal rings onto the two threaded plugs.
- Apply Loctite 640 or 680 on the plugs.
- Install the threaded plugs into the cylinder block and torque to 150 N·m (110 lb·ft).
- Reinstall the Oil Pressure Limiting Valve. Refer to section 3.4.1 of the MBE 4000 Service Manual (6SE412).
- Reinstall all other removed components in reverse order.
- After all work has been completed, start and run the engine and verify there are no leaks.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Threaded plugs torque: 150 N·m (110 lb·ft)
Source: Detroit Diesel service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.