Crankshaft and main bearings (page 3 of 4)

Reassembly 11. Fit main bearing caps 1 to 4 only at this stage,

1. Clean main bearing locations in cylinder block and bearing caps.
2. Clean sealant from rear main bearing cap and 12. Lightly lubricate threads of main bearing cap mating faces.
3. Fit key to keyway. 13. Fit main bearing cap bolts but do not tighten at
4. Check threads of main bearing cap bolts for damage, renew bolts in pairs.

14. Fit side seals to rear main bearing cap,
5. Lubricate grooved main bearing shells with clean engine oil and fit to their locations in cylinder block.
15. Apply a 3 mm (0.12 in) wide bead of sealant,

NOTE: Ensure that the flanged bearing is fitted to the centre position.

6. Lubricate crankshaft journals with clean engine oil.
7. Position crankshaft in cylinder block.
16. Carefully fit rear main bearing cap assembly, fit

17. Lubricate 'Dowty' washers with engine oil and
18. Fit but do not tighten side bolts.
8. Attach a DTI to front of cylinder block, move crankshaft rearwards, position stylus of gauge on end of crankshaft and zero gauge.
9. Move crankshaft forwards, measure and record end-float obtained. l Crankshaft end-float = 0.08 to 0.26 mm (0.003 to 0.01 in).
10. Lubricate plain bearing shells with clean engine oil and fit to main bearing caps.

ensuring that they are the correct way round and in their fitted order.

bolts with clean engine oil.

this stage. Do not fit side bolts at this stage.

ensuring that seals do not protrude above bearing cap face.

Part No. STC 50550 to bearing cap rear mating faces on cylinder block.

CAUTION: Ensure sealant does not enter bolt holes.

but do not tighten bolts.

CAUTION: Ensure engine oil does not enter the side bolt holes in the bearing cap.

fit to side bolts. Rear side bolts are Allen headed.