1995 LAND ROVER DISCOVERY engine oil

ENGINE
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OVERHAUL
6.Remove timing belt front cover.
7.Remove and discard gasket.
8.Remove and discard crankshaft front oil seal
from timing belt front cover.
9.Temporarily fit crankshaft pulley bolt to
crankshaft.
Manual gearbox
10.Remove plug from bottom of flywheel housing.
11.Rotate crankshaft clockwise using crankshaft
pulley bolt until toolLRT-12-044can be
located in slot in flywheel.
CAUTION: Do not rotate crankshaft
anti-clockwise and do not use camshaft or
fuel injection pump gear bolts to rotate
crankshaft.
Automatic gearbox
12.Rotate crankshaft clockwise using crankshaft
pulley bolt until toolLRT-12-044can be
inserted through hole in engine plate and into
slot in drive plate.
CAUTION: Do not rotate crankshaft
anti-clockwise and do not use camshaft or
fuel injection pump gear bolts to rotate
crankshaft.

ENGINE
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OVERHAUL Timing belt tensioner and gears - refit
1.Smear a new 'O' ring with engine oil and fit to
crankshaft.
2.Fit Woodruff key in slot in crankshaft.
3.Fit crankshaft gear on to crankshaft and using
a soft mallet, tap gear fully home.
4.Position camshaft timing gear and hub plate to
camshaft, fit bolt and washer, finger tighten
bolt. Do not tighten bolt at this stage.
NOTE: Later engines are fitted with a
flange head bolt.
5.Position fuel injection pump gear and hub plate
to fuel injection pump hub ensuring that cut-out
in hub plate is aligned with timing pin hole in
pump hub.
6.Fit 3 bolts, position slots in gear mid-way under
bolt heads, lightly tighten bolts.
CAUTION: Do not fit bolts through
elongated slots in hub plate. Ensure gear
does not move as bolts are tightened.
7.Insert timing pinLRT-12-045in hub plate and
injection pump hub. If timing pin cannot be
inserted, slacken bolts and rotate gear until pin
can be fitted, lightly tighten bolts.

ENGINE
OVERHAUL9
5.Check that timing pinLRT-12-045moves
freely in and out of injection pump hub, if pin
does not move freely, slacken 3 bolts, move
gear slightly and re-check.
6.When timing pin moves freely, tighten 3 bolts
to 25 Nm.
7.Remove timing pinLRT-12-045and
flywheel/drive plate locking toolLRT-12-044.
8.Rotate crankshaft twice in a clockwise direction
using crankshaft pulley bolt until flywheel/drive
plate locking toolLRT-12-044can be refitted.
9.Slacken timing belt tensioner securing bolt and
re-tension timing belt.
10.Tighten tensioner bolt to 45 Nm.
11.Fit timing pinLRT-12-045into fuel injection
pump gear hub plate and pump hub. If timing
pin cannot be inserted, slacken injection pump
gear bolts, rotate pump shaft using shaft nut
until pin slides easily into pump hub, Tighten
bolts to 25 Nm.
12.Tighten camshaft gear bolt to 80 Nm.
13.Remove timing pin and flywheel/drive plate
locking tools.
14.Fit plug to flywheel housing, tighten to 12 Nm.
15.Remove crankshaft pulley bolt.
16.Support timing belt front cover on suitable
blocks of wood.
17.Smear a new crankshaft oil seal with engine
oil.
18.Using toolLRT-12-077,fit oil seal from inside
face of front cover.
19.Fit a dry, new gasket to timing belt rear cover.
20.Position timing belt front cover to rear cover.
21.Fit bolts of the correct length in positions
shown.

ENGINE
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22.Tighten bolts in sequence shown to 25 Nm.
23.Lightly oil crankshaft spigot, fit Woodruff key
and crankshaft pulley.
24.Position toolLRT-12-080to crankshaft pulley,
retain tool using 4 bolts.
25.Fit crankshaft pulley flange head bolt.
26.Restrain crankshaft and tighten bolt to 80
Nm,then further 90.°
27.Remove toolLRT-12-080.

ENGINE
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Inspecting components
1.Measure and record diameter of rocker shaft at
one of the pedestal locations.
2.Measure and record diameter of rocker shaft at
each of the rocker arm locations.
3.Compare measurements obtained and
calculate difference between diameters. If wear
at any rocker shaft location exceeds 0.025 mm,
a new rocker shaft must be fitted.
4.Check rocker arm pads for signs of wear,
replace rocker arms as necessary.
5.Check threads and ball ends of each tappet
adjusting screw for wear. Pay particular
attention to ball ends, replace any showing
signs of flattening on the ball or damage to
threads.
6.Check that each nut runs freely on adjusting
screw threads.
7.Check each push rod for signs of wear and for
straightness, replace as necessary.
8.Check valve caps for signs of wear, replace as
necessary.
9.Check rocker arm bushes for scoring and
wear.
10.Assemble each rocker arm to its fitted location
on rocker shaft and check clearance of bush to
shaft does not exceed 0.12 mm.
11.If clearance exceeds figure given, bushes must
be replaced.Rocker arm bushes - replace
1.Support rocker arm on bed of hand press.
2.Using a suitable piloted mandrel, press bush
out of rocker arm.
3.Lubricate replacement bush with engine oil and
press into rocker arm ensuring that lubrication
holes in bush and arm are aligned.
4.Check that lubrication holes in each rocker arm
are clear.
5.Check that lubrication holes in rocker shaft are
clear.
6.Check spacers and washers for wear, replace
as necessary.

ENGINE
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OVERHAUL Rocker shaft - assembling
1.Lubricate all components with engine oil.
2.Assemble rocker arms, spacers, washers and
pedestals to rocker shaft ensuring that they are
in their original fitted positions.
3.Retain pedestals 1 and 5 with slave bolts.Rocker shaft - refit
1.Lubricate push rods with engine oil and fit to
their original positions. Ensure that ball end of
each push rod is correctly located in each cam
follower slide.
2.Screw each tappet adjusting screw into its
respective rocker arm until ball end is flush with
underside of arm; fit but do not tighten
locknuts.
3.Lubricate valve pads with engine oil and fit to
their original positions.
4.Position rocker shaft to cylinder head, fit but do
not tighten 3 nuts.
5.Remove slave bolts from pedestals 1 and 5, fit
but do not tighten 2 bolts.
6.Locate each push rod in turn beneath its
respective tappet adjusting screw and tighten
each screw until ball end locates in recess in
push rod.
7.Working from the centre outwards,
progressively tighten 3 nuts and 2 bolts to 5
Nm.

ENGINE
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18.Check sealing washers for damage or
distortion, replace as necessary.
19.Position a new gasket - dry to rocker cover.
20.Position rocker cover to cylinder head, fit 3
flange nuts and working from centre outwards,
tighten to 10 Nm.
21.Lubricate a new 'O' ring with engine oil and fit
to crankcase breather cyclone unit.
22.Fit cyclone unit to rocker cover, fit bolt and
tighten to 9 Nm.
23.Connect breather hoses to cyclone unit, rocker
cover and cylinder block.

ENGINE
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6.Remove spring cup, valve spring and spring
seat. Keep components in their fitted order.
7.Remove and discard valve stem oil seal.
8.Remove valve, and retain in fitted order.
9.Repeat above procedures for remaining
valves.Cylinder head - inspection
1.Decarbonise cylinder head.
2.Examine cylinder head for cracks, pay
particular attention to area between inlet and
exhaust valve seats. Cracks indicate engine
has overheated and cylinder head must be
replaced.
3.Check core plugs for signs of corrosion and
leakage, replace as necessary.4.Check cylinder head for warping using a
straight edge and feeler gauges.
Maximum warping = 0.08 mm
CAUTION: Cylinder head must not be
refaced, if warping exceeds figure given,
head must be replaced.
5.Check valve seat inserts for burning, pitting or
damage, replace inserts if pitting cannot be
removed by valve lapping-in or refacing.