Discovery I (LJ) V8-4.0L (1996)
/v8-4.0l/Page-728001.png)
Cylinder Head Gasket: Service and Repair
CYLINDER HEAD GASKETS - RENEW
1. Drain cooling system.
2. Remove intake manifold.
3. Remove generator.
4. If equipped, remove the A/C compressor.
5. Remove rocker shafts.
6. Remove push rods.
7. Remove both exhaust manifolds.
8. Remove air cleaner assembly.
9. Remove air flow sensor.
10. Remove ground leads from rear of left hand cylinder head.
11. Right hand cylinder head - remove breather pipe from lifting bracket.
12. Loosen cylinder head bolts, reversing tightening sequence.
13. Remove cylinder heads.
14. Remove cylinder head gaskets.
15. Clean exhaust mating faces.
16. Clean head and block faces.
17. Fit new cylinder head gaskets, word TOP uppermost. DO NOT use sealant.
18. Oil cylinder bores.
19. Clean threads of head bolts and lightly oil.
20. Install the cylinder heads on block.
21. Install the cylinder head bolts in position illustrated.
66 mm long bolts 2,4, 6, 7, 8, 9, 10
96 mm long bolts 1, 3, 5
Note: There are no bolts fitted in the four lower holes in each cylinder head.
Bolts Positions And Tighten Sequence
Note: Left hand cylinder head illustrated, arrow points to front of vehicle.
22. Lightly oil new bolts and tighten in the sequence shown.
Stage 1 .................................................................................................................................................................................................... 20 Nm (15 ft. lbs.)
Stage 2 ............................................................................................................................................................................................................................. 90°
Stage 3 .............................................................................................................................................................................................................. Further 90°
Note: There are no bolts fitted in the four lower holes in each cylinder head.
