L322 Range Rover Service Procedures
ENGINE - V8
OVERHAUL 12-2-91
19. Remove valve stem oil seal using LRT-12-071.
Discard stem seal.
20. Repeat procedure for remaining valves,
keeping components in their fitted order.
Inspect
1. Inspect camshafts and replace camshafts if
scored, pitted or excessively worn.
2. Check camshaft, camshaft bearings in cylinder
head and bearing caps for wear.
3. Using a straight edge and feeler gauges, check
cylinder head for distortion along lines shown in
illustration.
4. Clean valve seat, inspect for pitting, burning,
cracks and wear.
5. Fit new valve to valve guide, with end of valve
stem level with valve guide.
6. Mount dial gauge onto cylinder head and zero
gauge on valve head. Move valve from side to
side to measure valve guide wear.
7. If valve movement is excessive, the guides can
be reamed to accept valves with a larger stem
diameter.
8. If valve guides have been reamed to fit valves
with a larger stem diameter then the valve seats
must be cut as shown using LRT-12-501, LRT-
12-503 and LRT-12-517.
9. Ensure cutter blades are fitted correctly to
cutter head. Adjust blades so that middle of the
blade contacts the area to be cut. Use light
pressure and remove the minimum of material.
10. Repeat as necessary for all valves, valve
guides and valve seats.
M12 7948
LRT-12-071