Engine Overhaul Manual: Crankshaft Refit Procedure for v8 40 46
ENGINE
50
OVERHAUL
Crankshaft spigot bearing - renew
1. Carefully extract old spigot bearing.
2. Clean bearing recess in crankshaft.
3. Fit new bearing flush with, or to a maximum of
1.6 mm (0.06 in) below end face of crankshaft.
4. Ream bearing to correct inside diameter.
Spigot bearing inside diameter = 19.177 +
0.025 - 0.000 mm (0.75 + 0.001 - 0.000 in).
5. Remove all traces of swarf.
Crankshaft - refit
1. Clean main bearing caps, bearing shell
recesses and mating surfaces of cylinder
block.
CAUTION: Ensure bolt holes in cylinder
block and main bearing caps are clean
and dry.
2. Fit new upper main bearing shells, with oil
holes and grooves, in cylinder block, ensuring
flanged shell is fitted in centre position.
NOTE: If crankshaft has been reground
ensure appropriate oversize bearing shells
are fitted.
3. Lubricate main bearing shells with engine oil
and position crankshaft in cylinder block.
4. Fit new main bearing shells to bearing caps.
5. Lubricate main bearing shells with engine oil.
6. Fit numbers 1 to 4 main bearing caps ensuring
that reference marks made during dismantling
are aligned, fit and tighten main bearing cap
bolts to 5 Nm (4 lbf.ft).
NOTE: Do not fit side bolts at this stage.