coolant LAND ROVER DISCOVERY 1995 Owner's Manual

4.0 V8
11
REPAIR ROCKER COVER GASKET - RIGHT HAND
Service repair no - 12.29.41 - RH Cover Gasket
1.Depressurise fuel system.
See FUEL SYSTEM
SFI, Repair, Fuel System - Depressurise
2.Disconnect battery negative lead.3.Drain cooling system.
See COOLING SYSTEM
V8, Adjustment, Coolant
NOTE: Leave hose disconnected.
4.Disconnect purge pipe from plenum chamber
hose.
5.Disconnect breather pipe from rocker cover.
6.Remove bolt securing coolant pipe brackets and
nut securing bracket to manifold.
7.Loosen hose clip and disconnect coolant return
hose from pipe.
CAUTION: Plug connection.
8.Loosen clip and disconnect fuel return hose from
pipe.
9.Disconnect fuel hose from injector pipe.
CAUTION: Use 2 spanners.10.Remove 2 nuts securing engine harness
brackets to manifold.
11.Release 4 ht leads from 2 brackets on rocker
cover.

12ENGINE
12
REPAIR
12.Remove 4 bolts securing rocker cover to cylinder
head.
13.Remove rocker cover.
14.Remove and discard rocker cover gasket.Refit
15.Clean mating faces between rocker cover and
cylinder head using Bostick cleaner 6001 or
equivalent. Allow to dry.
NOTE: Gasket fits one way round only. It
must be fitted accurately, first time.
Subsequent movement will destroy
bonding.
16.Apply a thin coating of impact adhesive (Bostick
1775 or equivalent) to mating faces of rocker
cover seal face and new gasket. Use a brush to
ensure an even film. Allow adhesive to become
touch dry.
17.Place one end of gasket into cover recess with
edge firmly against recess wall, holding
remainder of gasket clear. Work around cover,
pressing gasket into place ensuring edge firmly
contacts recess wall.
CAUTION: Allow cover to stand for thirty
minutes before fitting.
18.Fit rocker cover to cylinder head, ensure short
screws are inboard. Tighten to
9 Nm.
19.Connect fuel feed and return hoses.
20.Refit ht leads into retaining brackets.
21.Secure engine harness to brackets.
22.Connect coolant pipes to hoses and secure
brackets.
23.Connect breather hose to rocker cover.
24.Connect purge hose to plenum chamber.
25.Connect bottom hose to radiator.
26.Refill cooling system.
See COOLING SYSTEM
V8, Adjustment, Coolant
27.Reconnect battery negative lead.

12ENGINE
4
DESCRIPTION AND OPERATION CYLINDER BLOCK COMPONENTS
1. Cylinder block
2. Knock sensor
3. Crankshaft sensor
4. Bolt - crankshaft sensor
5. Locating dowel - cylinder head
6. Bolt - connecting rod
7. Piston
8. Piston ring - top compression
9. Piston ring - 2nd compression
10. Piston ring - oil control
11. Gearbox adapter plate
12. Bearing shell - big end - upper
13. Flywheel
14. Bolt - flywheel
15. Torx screw - gearbox adapter plate
16. Blanking plate
17. Bolt - blanking plate
18. Gasket
19. Bolt - crankshaft rear oil seal housing
20. Crankshaft rear oil seal and housing
21. Bolt - coolant pump cover
22. Coolant pump cover
23. Impeller
24. Sealing rings
25. 'O' ring
26. Bolts - coolant pump
27. 'O' ring
28. Coolant pump body
29. Thrust washer halves - upper
30. Bearing shell - main bearing - upper
31. Locating dowel - oil pump
32. Locating dowel - flywheel
33. Gudgeon pin34. Crankshaft
35. Bearing shell - big end - lower
36. Bearing cap - big end
37. Nut - big end bearing cap
38. Locating dowel - main bearing cap
39. Bearing caps - main bearings
40. Bolt - main bearing cap
41. Thrust washer halves - lower
42. Bearing shell - main bearing - lower
43. Woodruff keys
44. Dipstick
45. Bolt - dipstick tube
46. Dipstick tube
47. Bolts - sump
48. Gasket - sump
49. 'O' ring
50. Oil strainer
51. Bolts - oil strainer
52. Sump
53. Washer - drain plug
54. Drain plug
55. Oil filter element
56. Crankshaft front oil seal
57. Bolts - oil pump
58. Gasket - oil pump
59. Oil pump
60. Oil pressure switch
61. Crankshaft spigot bush
62. Crankshaft spigot bearing
63. Locating dowel - coolant pump
64. Connecting rod
65. Bolts belt tensioner mounting plate
66. Belt tensioner mounting plate
67. Bolt - gearbox adapter plate

12ENGINE
6
DESCRIPTION AND OPERATION CYLINDER HEAD COMPONENTS
1. Engine oil filler cap
2. Filler cap seal
3. Screw - spark plug cover
4. Spark plug cover
5. h.t. lead plate
6. Screw - h.t. lead plate
7. Inlet camshaft cover
8. Exhaust camshaft cover
9. Bolt - exhaust camshaft cover
10. Exhaust camshaft cover gasket/baffle plate
11. Bolt - exhaust camshaft carrier
12. Exhaust camshaft carrier
13. Exhaust camshaft
14. Cylinder head bolt
15. Blanking plate
16. Bolt - blanking plate
17. Locating dowel - camshaft carrier
18. Coolant outlet elbow
19. Gasket
20. Bolt - coolant outlet elbow
21. Stud - exhaust manifold
22. Cylinder head gasket
23. Guide - exhaust valve24. Insert - exhaust valve seat
25. Exhaust valves
26. Inlet valves
27. Insert - inlet valve seat
28. Guide - inlet valve
29. Cylinder head
30. Stud - inlet manifold
31. Valve stem oil seal
32. Valve spring
33. Valve spring cap
34. Collets
35. Tappet
36. Camshaft oil seals
37. Drive pins - camshaft timing gears
38. Inlet camshaft
39. Inlet camshaft carrier
40. Bolt - inlet camshaft carrier
41. Inlet camshaft cover gasket/baffle plate
42. Bolt - inlet camshaft cover
43. Spark plug
44. Coolant temperature sensor
NOTE: Items 15,16 & 36 on current engines
replaced by an oil plug.
See Repair, Inlet -
Exhaust Camshaft Rear Oil Plug

12ENGINE
6
REPAIR ENGINE
Service repair no - 12.41.01
Remove
1.Site vehicle onto ramp [hoist].
2.Remove the drive belt.
See SECTION 10,
Maintenance, Under Bonnet [Hood]
Maintenance
3.Remove radiator.See COOLING SYSTEM,
Repair, Radiator - Mpi
4.Remove bonnet [hood].See CHASSIS AND
BODY, Repair, Bonnet [Hood]
5.Drain engine oil.
6.Position absorbent cloth around fuel pipe to fuel
rail union.
Unscrew union to relieve pressure.
CAUTION: Plug the connections
7.Release clip and disconnect hose from coolant
pump.
8.Release clip and disconnect hose from heater
rail.

Mpi
7
REPAIR
NOTE: On current models the generator
cover is omitted.
9.Remove 3 nuts securing generator rear cover.
10.Remove rear cover.
11.Remove 3 nuts securing harness to generator.
12.Remove harness.
13.Disconnect oxygen sensor multiplug.
14.Release multiplug from bracket.
15.Release harness from cable tie.
16.Disconnect 2 coolant temperature sensor
multiplugs.
17.Release clips and disconnect the bypass and
top hose.
18.Release harness lead from cable tie.
19.Release clip and disconnect breather hose from
inlet manifold.
20.Feed harness between inlet manifold and cam
cover.

12ENGINE
8
REPAIR 21.Release clip and disconnect inlet hose from
power steering pump.
22.Disconnect outlet pipe union at power steering
pump, discard 'O' ring.
CAUTION: Plug the connections
23.Release throttle cable from abutment bracket.
24.Release throttle cable from cam. Also remove
coolant bypass hose from throttle housing.
25.Disconnect stepper motor and throttle
potentiometer multiplugs.
26.Release clip and disconnect hose, air cleaner to
throttle housing.
27.Release clip and disconnect brake servo hose
from manifold.
28.Disconnect fuel temperature sensor multiplug.

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.

Mpi
15
REPAIR 4.Release clip and disconnect hose from heater
rail.
5.Disconnect 2 coolant temperature sensor
multiplugs.
6.Release clips and disconnect the bypass hose
and top hose.
7.Release harness from cable tie.
8.Disconnect oxygen sensor multiplug.
9.Release harness lead from cable tie.
10.Release throttle cable from abutment bracket.
11.Release throttle cable from cam. Also remove
coolant bypass hose from throttle housing.
12.Disconnect stepper motor and throttle
potentiometer multiplugs.
13.Release clip and disconnect hose, air cleaner to
throttle housing.