Detroit Diesel — Remove Crankshaft

Repair & overhaul

From a Detroit Diesel service manual — check it applies to your exact model before use.

Procedure

1. Clean the exterior of the engine; drain the cooling system and the engine crankcase.
2. Remove all accessories with attaching parts as necessary to permit the engine to be placed upside down on an overhaul stand.
3. Remove the valve rocker covers, valve and injector operating mechanism and the cylinder heads.
4. Install suitable retainers to temporarily hold the pistons and cylinder liners in place.
5. Remove the engine from its base and position it upside down on an engine overhaul stand.
6. Remove the lower oil pan, oil pump, brackets and tubing; remove the upper oil pan.
7. Remove the flywheel and flywheel housing.
8. Remove the crankshaft cap or pulley retaining bolt and washer at the front end of the crankshaft.
9. Remove the vibration damper, water pump and thermostat housings; remove the heat exchanger, if equipped.
10. Remove the outboard bearing support and seal assembly from the front cover; remove the front cover.
11. Remove the connecting rod bearing caps; remove the main bearing caps.
12. Remove the thrust washers from the rear main bearing cap and the cylinder block.
13. Remove the crankshaft, timing gears (front and rear) and front timing gear damper as an assembly.
14. Remove the crankshaft timing gears and damper from the crankshaft.

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.

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