1995 LAND ROVER DISCOVERY engine oil

12ENGINE
12
REPAIR 51.Remove engine L.H. and R.H. mounting lower
nuts.
52.Lower vehicle.
53.Raise engine.
54.Remove engine mountings.
55.Lower engine.
56.Remove bell housing top nut.
57.Raise engine and support gearbox.58.Remove 12 remaining bell housing nuts.
59.Remove engine.
Refit
NOTE: For torque values.See
Specifications, torque, Torque Values
1.Using assistance, lower engine into position.
2.Fit bell housing nuts, tighten to the correct
torque.
3.Remove gearbox support.
4.Lower engine.
5.Fit bell housing top nut, tighten to the correct
torque.
6.Raise engine.
7.Position engine mountings, partially tighten nuts.
8.Lower engine.
9.Remove hoist and chains.
10.Tighten L.H. and R.H. mounting nuts to the
correct torque. Fit engine mounting heatshield.
11.Fit new gasket to exhaust downpipe.
12.Fit exhaust manifold to downpipe nuts and
tighten to the correct torque.
13.Tighten exhaust downpipe to silencer box nuts
to the correct torque.
14.Position air conditioning compressor and secure
with bolts. Tighten to the correct torque.
15.Connect coil multiplugs.
16.Connect harness to starter solenoid and secure
with nuts.
17.Connect earth lead to cylinder block and secure
with nut.
18.Position engine harness to manifold, secure with
bolts.

Mpi
13
REPAIR 19.Connect crankshaft sensor, knock sensor, air
conditioning compressor, fuel injector harness,
inlet manifold air temperature and fuel
temperature sensor multiplugs.
20.Connect fuel hose to pressure regulator and
secure with clip.
21.Fit and tighten fuel pipe to fuel rail union.
22.Connect multiplugs to throttle housing.
23.Connect vacuum hose to manifold.
24.Connect oil pressure switch multiplug.
25.Connect brake servo hose to manifold, secure
with clip.
26.Connect throttle cable to cam.
27.Position engine harness and connect breather
hose to inlet manifold, secure with clip.
28.Connect coolant temperature sensor multiplugs,
secure harness with cable tie.
29.Connect oxygen sensor multiplug, secure
harness with cable tie.
30.Connect alternator harness.
31.Connect heater hose to heater rail and secure
with clip.
32.Connect hose to coolant pump and secure with
clip.
33.Connect inlet hose to power steering pump and
secure with clip.
34.Fit and tighten outlet pipe union to power
steering pump.
35.Connect bypass and top hose, secure with clip.
36.Connect air cleaner to throttle housing hose and
secure with clip.
37.Remove engine lifting bracket.
38.Position spark plug cover and secure with
screws.
39.Fill engine with oil.
40.Fit bonnet [hood].
See CHASSIS AND BODY,
Repair, Bonnet [Hood]
41.Fit radiator.See COOLING SYSTEM, Repair,
Radiator - Mpi
42.Adjust throttle cable.See FUEL SYSTEM,
Adjustment, Throttle Cable Adjustment
ENGINE SUMP GASKET
Service repair no - 12.60.43
Remove
1.Drain engine oil.
2.Refit drain plug, use new sealing washer if
necessary, tighten to the correct torque.
3.Remove 18 bolts securing sump.
NOTE: 25mm long bolt is fitted at rear L.H.
corner of sump.
4.Release sump from cylinder block.
5.Discard gasket.

12ENGINE
14
REPAIR Refit
1.Clean sump, remove all traces of gasket from
mating faces of sump and cylinder block.
Visually check sump for damage.
2.Apply beads of RTV sealant to front main
bearing cap.
3.Position new gasket to sump, ensuring that
location pips on gasket are located in sump.
Check gasket lays flat on sump flange.
4.Fit sump. Fit bolts, ensuring that longest bolt is
inserted at position 7.
5.Working around the sump in the sequence
illustrated, tighten the bolts to the stage 1 torque
figure. Then, in the same sequence, tighten the
bolts to the stage 2 torque figure.
NOTE: For torque values.See
Specifications, torque, Torque Values
6.Fill engine with oil.CYLINDER HEAD GASKET
Service repair no - 12.29.01
Remove
1.Disconnect battery negative lead.
2.Position absorbent cloth around fuel pipe to fuel
rail union. Unscrew union to relieve pressure.
CAUTION: Plug the connections.
WARNING: Do not carry out the next
instruction until the coolant is cool to
avoid personal injury from scalding.
3.Release clip and disconnect radiator bottom
hose, allowing coolant to drain into a suitable
container.

12ENGINE
22
REPAIR
CAUTION: Ease timing belt off gears using
fingers only. Metal levers may damage the
belt and gears. Do not rotate engine with
timing belt removed and cylinder head fitted.
Timing belts must be stored and handled with
care. Always store a timing belt on its edge with a
bend radius greater than 50 mm. Do not use a
timing belt which has been twisted or bent double
as this can fracture reinforcing fibres. Do not use
an oil contaminated timing belt. Although the belt
has a service life of 96,000 miles, 160,000 km, an
existing belt should only be refitted if it has
completed less than 48,000 miles, 80,000 km.
Refit
NOTE: For torque values.See
Specifications, torque, Torque values
1.Clean timing belt gears and pulleys.
2.Clean crankshaft pulley.
CAUTION: If original belt is to be refitted,
ensure direction of rotation mark is facing
correct way.
3.Fit timing belt to gears, starting at the crankshaft
gear and working in an anti-clockwise direction.
CAUTION: Ensure the belt run between the
crankshaft and exhaust camshaft gear is
kept taut during the fitting procedure.
4.Fit timing belt lower cover, tighten 3 bolts to the
correct torque.
5.Fit crankshaft pulley to crankshaft timing gear.
6.Fit tool LRT-12-059 to crankshaft pulley, fit 2
bolts to retain tool.
7.Fit crankshaft pulley centre bolt, and using tool
LRT-12-059 to restrain pulley, tighten bolt to the
correct torque.
8.Remove tool LRT-12-059
9.Fit bolts securing crankshaft pulley to timing
gear, tighten bolts to the correct torque.
10.Remove tool LRT-12-060.Tension belt
1.Loosen timing belt tensioner pulley bolt.
2.Apply
40Nmanti-clockwise torque to inlet cam
pulley bolt and release.
3.Tighten tensioner pulley bolt to the correct
torque.
4.Remove tool LRT-12-058 from flywheel.
5.Fit timing belt centre cover, tighten 5 bolts to the
correct torque.
6.Fit timing belt upper cover, tighten 5 bolts to the
correct torque.
7.Fit drive belt.

Mpi
23
REPAIR CHECK CAMSHAFT DRIVE BELT
Service repair no - 12.65.17
CAUTION: This check must be carried out
at the service intervals specified and
whenever carrying out any repair which
requires the timing belt to be disturbed. Pay
particular attention for signs of belt splitting at
base of teeth.
1.Remove 5 bolts securing timing belt upper cover
2.Remove upper cover.
3.Using a socket and extension bar on the
crankshaft pulley bolt, rotate engine to allow the
timing belt to be inspected.
CAUTION: Do not use camshaft gears or
retaining bolts to rotate engine.
4.Check timing belt condition, renew any belt that
shows signs of oil contamination, cracking,
fraying or splitting at base of teeth.
CAUTION: Cause of oil contamination, if
present, must be rectified.
5.Clean timing belt upper cover.
6.Position upper cover.
7.Fit upper cover securing bolts.

Mpi
1
SPECIFICATIONS, TORQUE TORQUE VALUES
NOTE: Torque wrenches should be regularly checked for accuracy to ensure that all fixings are
tightened to the correct torque.
Nm
ENGINE
Timing belt upper cover bolts 5......................................................................
Timing belt centre cover bolts 5.....................................................................
Timing belt lower cover bolts 5......................................................................
Crankshaft pulley centre bolt 85.....................................................................
Crankshaft pulley to timing gear bolts 10........................................................
Tensioner pulley bolt 30..................................................................................
Spark plugs 27................................................................................................
Timing belt upper backplate bolts 10..............................................................
Camshaft gear bolts 65...................................................................................
Exhaust camshaft rear oil seal cover plate bolts 10........................................
Inlet camshaft rear oil seal cover plate bolts 10..............................................
Crankshaft rear oil seal housing bolts 10........................................................
Engine sump bolts
Stage 1 3...............................................................................................
Stage 2 10..............................................................................................
Bell housing nuts 40........................................................................................
L.H. and R.H. engine mounting nuts 85..........................................................
Exhaust manifold to downpipe nuts 10...........................................................
Exhaust downpipe to silencer box nuts 30......................................................
Air conditioning compressor to engine block bolts 45.....................................
Cylinder head bolts
Stage 1 45..............................................................................................
Stage 2 80..............................................................................................
Stage 3 - Further 90°
Camshaft cover bolts 10.................................................................................
Knock sensor 15.............................................................................................
Ignition coil bracket bolts 25............................................................................
Coolant temperature sensor 15......................................................................
Crankshaft sensor bolts 7..............................................................................
Fuel temperature sensor 7.............................................................................
Intake air temperature sensor 7.....................................................................
Fuel rail to inlet manifold bolts 10...................................................................
Fuel feed hose stiffening bracket bolts 7.......................................................
Throttle housing mounting nuts 7...................................................................
Fuel pressure regulator steady bracket bolts 7..............................................
Oxygen sensor 55...........................................................................................

12ENGINE
2
SERVICE TOOLS
LRT-12-061 Protection sleeve crankshaft rear oil
18G 1108 seal
LRT-12-063 Remover camshaft oil seals
18G 1476
LRT-12-064 Replacer pilot camshaft front
18G 1475
LRT-12-069 Replacer crankshaft front oil seal
18G 1509

EMISSION CONTROL
1
DESCRIPTION AND OPERATION REV: 09/95 EMISSION CONTROL
Three systems are used to control the vehicle
atmospheric emissions these are:
Engine crankcase fume emissions.
Fuel tank Evaporative emissions
Engine exhaust gas emissions.
Crankcase ventilation system - 3.9 MFi models
only
The crankcase ventilation system which is an integral
part of the air supply to the engine combustion
chambers, is often overlooked when diagnosing
problems associated with engine performance. A
blocked ventilation pipe or filter or excessive air leak
into the inlet system through a damaged pipe or
leaking gasket can effect the mixture, performance
and economy of the engine.
1. Three way connector
2. Air filter
3. Oil separatorThe purpose of the crankcase ventilation system is to
ensure that any noxious gas generated in the engine
crankcase is rendered harmless by burning in the
combustion chambers as follows:
Oil laden noxious gas in the engine crankcase is
drawn through an oil separator 3 located on the right
cylinder head rocker cover, where the oil is separated
and returned to the sump. The gas flows through a
restrictor in the three way connection 1 and into the
inlet plenum chamber where it is drawn into the
combustion chambers and burned. The volume of
fresh air which is drawn from the atmospheric side of
the throttle butterfly to mix with the gas, depends on
the position of the throttle and the engine speed.
The air filter 2 fitted to the left cylinder head rocker
cover, must be maintained in clean condition to
ensure sufficient air enters the crankcase under
varying throttle openings and manifold depression, to
prevent excessive crankcase pressure or depression
developing.