Crankshaft Mechanism Disassembly

PROCEDURE





1. Remove oil sump
- Remove oil filter.
- Disconnect flame trap return line.
- Remove oil sump.
- Tap sump off carefully using a plastic mallet.
- Remove oil passage oil rings.





2. Remove oil pump suction pipe
- Clean and inspect pipe and strainer.
- Remove O-ring.





3. Remove intermediate section
- Undo intermediate section bolts, working from the sides inwards towards the center.
- Tap intermediate section off carefully with a plastic mallet.
- Remove rear crankshaft seal.

CAUTION: Do not let crankshaft rotate.





4. Remove big end bearing caps
- Check markings on caps and conrods.
- Mark with center or number punch as required.
- Check centering of bearing halves on conrods and caps.

CAUTION:
- Do not mix up bearing shells for different crankshaft bushings.
- Do not rotate crankshaft.





5. Lift crankshaft out of engine block
Support crankshaft in V-blocks on outermost two main journals.
- Remove remaining main bearing shells from block.
- Mark position of thrust bearing.

NOTE: Do not mix up bearing shells from the different main journals.





6. Remove pistons from engine block
- Push pistons carefully by hand to overcome friction from rings.
- Remove pistons and conrods from bores.





7. Clean joint faces
- Clean joint faces on cylinder block, intermediate section and oil sump.
- Carefully scrape surfaces clean with a soft putty knife.
- Use gasket remover part No. 1 161 340-3, or equivalent if necessary.

NOTE: Always use a fume hood or extractor when using gasket remover.