Land Rover Engine 1.8 Litre K Series. Manual — part 10
ENGINE
26
OVERHAUL
6. Measure widest portion of Plastigage on each
journal:
Camshaft bearing clearance = 0.060 to 0.094
mm
Service limit = 0.15 mm
If clearance is excessive, fit new camshaft(s)
and repeat check. If clearances are still
excessive, replace cylinder head and camshaft
carrier assembly.
7. Remove drive pin from old camshaft and fit to
new with its split towards centre of camshaft.
Timing gears
1. Clean timing gears, check gear teeth for
damage and drive pin slot for wear, replace
gears as necessary.
CAUTION: If gears have been subjected to
prolonged exposure to oil contamination,
they must be soaked in a solvent bath and
then thoroughly washed in clean solvent.
ENGINE
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27
Valves and springs - remove
1. Support cylinder head clear of valves; use
hollow drift and tap each spring cap to free
collets.
2. Position cylinder head on its exhaust manifold
face.
NOTE: : Remove inlet valves with cylinder
head in this position.
3. Using tool LRT-12-034 and adaptor
LRT-12-034/1 compress valve spring.
4. Remove 2 collets from valve stem using a
magnet.
5. Remove tool LRT-12-034.
6. Remove spring cap and valve spring.
7. Remove valve.
ENGINE
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OVERHAUL
8. Using LRT-12-071, remove and discard valve
stem seal.
9. Repeat operations to remove remaining inlet
valves.
CAUTION: Retain valves and springs in
fitted order.
10. Position cylinder head on its inlet manifold
face.
11. Repeat operations to remove exhaust valves
and valve stem seals.
CAUTION: Retain valves and springs in
fitted order.
Cylinder head - cleaning
1. Clean sealing surfaces on cylinder head and
camshaft carrier.
Use foam action gasket remover and a plastic
scraper - DO NOT USE A METAL SCRAPER
ON SEALING SURFACES.
Clean inlet and exhaust manifold joint faces.
2. De-carbonise combustion areas of cylinder
head and valves as necessary.
3. Blow out oilways and waterways. Ensure oil
feed to camshaft carrier is clear.
NOTE: Cylinder heads fitted to later
engines have a 4.5 mm diameter hole
drilled through the head from the
camshaft oil seal recess, ensure drilling is clear.
ENGINE
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29
Cylinder head - inspection
1. Check cylinder head for damage, pay particular
attention to gasket face of cylinder head.
2. Check cylinder head face for warping, across
centre and from corner to corner:
Cylinder head:
Maximum warp = 0.05 mm
3. Check cylinder head height:
New = 118.95 to 119.05 mm.
Cylinder heads may be refaced:
Reface limit = 0.20 mm
CAUTION: Cylinder heads fitted to engines
with automatic timing belt tensioners are
not interchangeable with those fitted with
manual tensioners.
Valve springs - inspection
1. Check condition of valve springs:
Free length = 50.0 mm
Fitted length = 37.0 mm
Load - valve closed = 250
±
12 N
Load - valve open = 450
±
18 N
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