Refit Big-end Bearings in Engine Overhaul Manual v8 40 46
ENGINE
OVERHAUL
45
6. Remove 2 bolts securing each bearing cap.
7. Remove bearing cap and bearing shell.
NOTE: Keep bearing caps and bolts in
their fitted order.
8. Push each piston up its respective bore and
remove shells from connecting rods.
NOTE: Big-end bearing shells must be
replaced whenever they are removed.
Big-end bearings - refit
1. Fit bearing shells to each connecting rod.
NOTE: Big-end bearings are available in
0.254 mm (0.01 in) and 0.508 mm (0.02 in)
oversizes.
2. Lubricate bearing shells and crankshaft
journals with engine oil.
3. Pull connecting rods on to crankshaft journals.
4. Fit bearing shells to each big-end bearing cap.
NOTE: If crankshaft has been reground,
ensure appropriate oversize bearing shells
are fitted.
5. Lubricate bearing shells and fit bearing caps
ensuring reference marks on connecting rods
and bearing caps are aligned.
NOTE: Rib on edge of bearing cap must
face towards front of engine on RH bank
of cylinders and towards rear on LH bank
of cylinders.
6. Fit bearing cap bolts and tighten to 20 Nm (15
lbf.ft) then a further 80 degrees.
7. Check connecting rods move freely sideways
on crankshaft. Tightness indicates insufficient
bearing clearance or misaligned connecting
rod.
