Land Rover Engine 2.0 Litre T Series. Manual — part 8
ENGINE
OVERHAUL
17
NOTE: Inlet valve guide illustrated.
7. Using a piloted mandrel, press valve guide into
cylinder head from the combustion face side
until top of guide is 10.3 mm A from valve
spring seat face.
CAUTION: Ensure when fitting later type
exhaust valve guides that counterbore is
towards combustion face side of cylinder
head.
8. Allow cylinder head to air cool.
Valve seat inserts - inspection
1. Check valve seat inserts for pitting and
burning, replace as necessary.
CAUTION: Where valve installed height
exceeds dimension given, seat inserts
must be replaced.
Valve guide renewal must be carried out before
renewal of valve seat inserts.
ENGINE
18
OVERHAUL
Valve seat inserts - renew
1. Remove valve seat inserts.
CAUTION: Take care not to damage
cylinder head counterbore when removing
seat inserts.
2. Heat cylinder head to 100
°
C, fit new valve
seat inserts.
CAUTION: Ensure insert is kept square to
counterbore.
3. Cut valve seats using tools LRT-12-501,
LRT-12-518 and LRT-12-504.
Valve seat:
Width A = 1.5 to 2.0 mm
Angle B = 45
°
Valve face angle C
Inlet and exhaust = 45
°
to 45
°
15’
4. Lap all valves to their seats.
Valves - lapping-in
1. Lap each valve to its seat using fine grinding
paste.
2. Apply Prussian Blue to valve seat, insert valve
and press it into position several times without
rotating. Remove valve and check for even and
central seating. Seating position shown by
Prussian Blue should be in centre of valve
face.
3. Check valve installed height if valve seats have
been re-cut or new valves or valve seat inserts
fitted.
4. Ensure all traces of grinding paste are
removed on completion.
ENGINE
OVERHAUL
19
Valves and camshafts - assembling
1. Lubricate valve guides, valve stems, springs,
caps, spring seats and new valve stem oil
seals with engine oil.
2. Insert each inlet valve in its respective guide
and fit valve stem oil seals.
Early type guides - fit GREEN coloured seals
Later type guides - fit BLACK coloured seals.
3. Fit valve springs and caps, use tool
LRT-12-034 and adaptor LRT-12-034/1 to
compress valve springs.
4. Fit 2 collets.
5. Using a wooden dowel and mallet, lightly tap
each valve stem two or three times to seat
valve cap and collets.
6. Fit exhaust valves using above procedures.
7. Support each end of cylinder head on blocks of
wood.
8. Lubricate outside diameter of tappets, fit each
tappet to its original bore.
9. Lubricate camshaft journals.
10. Fit camshafts and rotate to position drive pins
as follows:
Inlet pin at 4 o’clock.
Exhaust pin at 8 o’clock.
ENGINE
20
OVERHAUL
Camshaft carriers and oil seals - assembling
1. Using an M8 x 1.25 tap, remove all traces of
sealant from camshaft cover bolt holes; clean
sealant from camshaft carriers using suitable
solvent.
2. Apply a thin, continuous bead of sealant from
kit, Part Number GUG 705548GM to cylinder
head as shown.
3. Spread sealant to an even film using a brush or
roller.
CAUTION: Ensure grooves adjacent to
each bearing journal are clear of sealant.
4. Fit camshaft carriers, fit new Patchlock bolts -
circled in illustration and plain bolts in all other
positions.
5. Working in sequence shown, progressively
tighten bolts to 25 Nm.
6. Lubricate new camshaft front and rear oil seals
with engine oil.
NOTE: Remove any burrs from lip of tool
LRT-12-072.
7. Fit front oil seals using tools LRT-12-072 and
LRT-12-064 .
CAUTION: Remove any burrs from lip of
tool LRT-12-065.
8. Fit rear oil seals using tools LRT-12-064 and
LRT-12-065 .
9. Fit blanking plates to camshaft carriers, fit bolts
and tighten to 8 Nm.
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