Discovery II
ENGINE - V8
OVERHAUL 12-2-75
Reassembly
1. Clean main bearing locations in cylinder block
and bearing caps; ensure bolt holes are clean
and dry.
2. Clean sealant from rear main bearing cap and
mating faces.
3. Fit key to keyway.
4. Check threads of main bearing cap bolts for
damage, renew bolts in pairs.
5. Lubricate grooved main bearing shells with
clean engine oil and fit to their locations in
cylinder block.
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.
8. Lubricate plain bearing shells with clean
engine oil and fit to main bearing caps.
9. Fit main bearing caps 1 to 4 only at this stage,
ensuring that they are the correct way round
and in their fitted order.
10. Lightly lubricate threads of main bearing cap
bolts with clean engine oil.
11. Fit main bearing cap bolts but do not tighten at
this stage. Do not fit side bolts at this stage.
12. Lubricate new cruciform seals with engine oil
and fit to rear main bearing cap.
CAUTION: Do not trim off excess from
cruciform seals at this stage.
13. Apply a 3 mm (0.12 in) wide bead of sealant,
Part No. STC 50550 to bearing cap rear mating
faces on cylinder block.
CAUTION: Ensure sealant does not enter
bolt holes.
14. Carefully fit rear main bearing cap assembly, fit
but do not tighten bolts.
CAUTION: Ensure engine oil does not enter
the side bolt holes in the bearing cap. Do
not trim off excess material from cruciform
seals at this stage.
15. Lubricate 'Dowty' washers with engine oil and
fit to side bolts.
16. Fit but do not tighten side bolts. Rear side
bolts are Allen headed.
17. Using the sequence shown, tighten main
bearing cap bolts as follows:
l
Initial torque - all main bearing cap bolts and
side bolts - 13.5 Nm (10 lbf.ft).
l
Final torque - main bearing cap side bolts 11
to 15 - 45 Nm (34 lbf.ft).
l
Final torque - main bearing cap bolts 1 to 8
- 72 Nm (54 lbf.ft).
l
Final torque - main bearing cap bolts 9 and
10 - 92 Nm (68 lbf.ft).
l
Final torque - main bearing cap side bolts 16
to 20 - 45 Nm (34 lbf.ft).
18. Trim off excess material from cruciform seals.
