Crank Mechanism, Dismantling

CRANK MECHANISM, DISMANTLING


- Remove engine Service and Repair




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.




Remove oil pump suction pipe
- Clean and inspect pipe and strainer.
- Remove 0-ring.




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.

Important: Do not let crankshaft rotate.




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.

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




Lift crankshaft out of engine block
- Suppbrt 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.




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




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 P/N 1 161 340-3 if necessary.

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