Workshop Manuals Factory service & repair Land Rover
01 4.0 & 4.6 Litre V8 Engine - 4th Edition02 03 04 05 INFORMATION06 07 08 GENERAL DATA09 10 11 12 TORQUE WRENCH SETTINGS13 SERVICE TOOLS14 15 16 17 18 DESCRIPTION AND OPERATION19 20 21 OVERHAUL
Land Rover Engine Overhaul Manual v8 4.0 4.621 · OVERHAUL
21 · General

Cylinder head - remove

Make
Land Rover
Model
Engines Engine Overhaul Manual v8 4.0 4.6
Section
Cylinder head - remove
OVERHAULCylinder head - remove
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ENGINE

4

OVERHAUL

5. Clean gasket surface in rocker cover and on

cylinder head, ensure bolt holes are clean and
dry.

6. Fit new gasket, dry to rocker cover.

CAUTION: Replace cork gasket(s) with
modified gasket(s) which incorporate
compression limiters in the bolt holes.

7. Fit rocker cover to cylinder head, fit new

’patched’ multi-hex bolts and tighten in
diagonal sequence to:
Stage 1 - 3 Nm (2.5 lbf.ft)
Stage 2 - 8 Nm (6 lbf.ft)

CAUTION: The 2 short bolts must be fitted
on side of cover nearest centre of engine.
Ensure that outer rim of gasket is correctly

positioned around periphery of rocker cover.

8. LH rocker shaft only: Align dipstick tube to

rocker cover, fit and tighten screw.

CYLINDER HEAD

Cylinder head - remove

1. Remove rocker shaft assembly.
2. Mark heads LH and RH for reassembly.

Engines fitted with secondary air injection (SAI)

3. Using a suitable hexagonal drive bit, remove

and discard 2 secondary air injection adapters
from cylinder head.

NOTE: To release the adapter thread
locking agent and prevent damage to the
cylinder head, remove the adapters by

loosening then tightening slightly. Repeat this
procedure until the adapters are removed.

CAUTION: Do not use an air tool to
remove adapters.

Parts & tools for this job Staging For Land Rover Engines

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