Land Rover Engine 2.0 Litre L Series. Manual — part 7
ENGINE
18
OVERHAUL
3. Check face angle A of each valve, renew any
valve with incorrect face angles, do not attempt
to recut.
Valve face angle - Inlet and exhaust = 45
°
to
45
°
30’.
Lapping-in valves
1. Lap each valve to its seat using grinding paste.
2. Apply Prussian Blue to valve seat, insert valve
into guide and press it firmly, without rotating,
on to seat.
3. Remove valve and check that a continuous,
even line of Prussian Blue has been
transferred on to valve face; continue
lapping-in valve as necessary.
NOTE: Line does not have to be across
whole width of valve face.
4. On completion of lapping-in, check valve head
stand down. See this section
ENGINE
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19
Valve head stand down
1. Insert each valve into its respective guide.
2. Using a straight-edge and feeler gauges, check
and record stand down of each valve head.
3. Compare figures obtained with figures given
below. If any valve has a stand down greater
than specified, valve seat insert and valve must
be replaced:
Valve head stand down:
Inlet valve A= 1.45 mm.
Exhaust valve B= 1.35 mm.
Cylinder head bolts - inspection
1. Keeping bolts in their fitted order, clean bolts
and washers, lightly oil threads.
2. Check bolt heads and threads for damage,
replace individual bolts as necessary.
3. Check length of bolt from top of bolt head to
end of bolt. If any bolt exceeds 243.41 mm in
length, all 10 bolts and washers must be
replaced.
CAUTION: Do not attempt to remove
washers from bolts. Keep bolts in their
original fitted order.
ENGINE
20
OVERHAUL
Cylinder head and camshaft carrier - cleaning
CAUTION: Use a suitable solvent to
remove old sealant from cylinder head and
camshaft carrier faces.
1. Clean mating surfaces of cylinder head and
camshaft carrier, remove any deposits from
camshaft oil seal recesses using a plastic
scraper.
2. Clean gasket material from cylinder head and
block using gasket removal spray and plastic
scraper.
CAUTION: Do not use a metal scraper.
3. Clean all traces of carbon from combustion
face areas.
4. Blow out all oilways and waterways.
5. Ensure threaded holes in cylinder block and
camshaft carrier are clean and dry.
6. Check core plugs for corrosion and signs of
leakage and replace if necessary; use Loctite
577 to seal replacement plugs.
Valves - assembling
1. Lubricate valve stem oil seals, valve guides,
valve stems, spring caps and springs with
engine oil.
2. Using tool LRT-12-071, fit new valve stem oil
seals.
3. Assemble valves, springs and spring caps
ensuring that they are in their correct fitted
order.
4. Compress valve springs using tool
LRT-12-034, fit collets, remove tool.
5. Using a wooden dowel and mallet, tap each
spring cap lightly to seat collets.
ENGINE
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21
Tappets and camshafts - assembling
1. Lubricate tappets and tappet bores with engine
oil. Fit tappets ensuring they are in their correct
fitted order.
2. Apply a continuous bead of sealant, Part No.
GUG 705963GM to paths on cylinder head as
shown then spread to an even film using a
roller.
CAUTION: Ensure sealant does not block
oilways or is spread on to bearing
journals. Assembly must be completed
within 20 minutes of applying sealant.
3. Lubricate cams and bearing journals on
camshaft, cylinder head and camshaft carrier
with engine oil.
CAUTION: Do not lubricate oil seal
running surfaces on camshaft.
4. Position camshaft in cylinder head with
camshaft timing belt gear drive pin at
approximately 2 o’clock position.
5. Fit camshaft carrier, fit and lightly tighten bolts.
CAUTION: With camshaft carrier bolted
down, some valves will protrude below
face of cylinder head; support each end of
cylinder head on blocks of wood.
6. Using sequence shown, progressively tighten
camshaft carrier bolts to 11 Nm.
CAUTION: Bolts must be tightened to
correct torque within 20 minutes of
applying sealant.
7. Check that all bolts are tightened to the correct
torque.
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