Detroit Diesel — Cylinder Block Cleaning Process
Maintenance · Cylinder block oil gallery and Oil Pressure Limiting Valve
From a Detroit Diesel service manual — check it applies to your exact model before use.
Before you start
- When removing the oil pressure limiting valve, take note of the direction in which the valve was installed.
Procedure
- Remove the Oil Pressure Limiting Valve. Refer to section 3.4.1 of the MBE 4000 Service Manual (6SE412). Take note of the direction in which the valve was installed.
- Use an aerosol spray can of brake cleaner or similar to clean the Oil Pressure Limiting Valve.
- Clean the newly tapped holes by spraying brake cleaner or similar cleaner down the main oil gallery towards the oil pan.
- Clean and inspect the rear face of the cylinder block and gear train.
Tools required
- Aerosol spray can of brake cleaner or similar Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
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.