Detroit Diesel — Disassemble Cylinder Block (12V or 16V Engines)
Repair & overhaul
From a Detroit Diesel service manual — check it applies to your exact model before use.
Before you start
- NEVER use eyebolts or any other commonly purchased hardware to lift the cylinder block.
Procedure
- Attach suitable lifting brackets to the end of the front cylinder block.
- Attach a chain hoist to the brackets; lift the blocks into a vertical position.
- Remove the fifteen bolts securing the two cylinder blocks together.
- Remove four 5/16"-18 x 5/8" bolts and lockwashers from the two center upper cylinder block drain screens; remove both drain screens.
- Lift the front cylinder block off of the rear cylinder block and remove the seal strip and seal rings from the rear block.
Tools required
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.