Land Rover Defender 50th Owners Handbook Rover

							Workshop maintenance
118 SPARK PLUG CHECK/RENEWAL
·Remove the H.T. leads from the spark
plugs.
·Remove the plugs using a spark plug
socket and ratchet.
·If they are in poor condition, replace with
new plugs of the correct specification (see
General data).
·Set the spark plug gaps to the correct
setting (seeGeneral data).
·Fit the spark plugs and washers - DO NOT
OVERTIGHTEN.
NOTE:Fitting incorrect grades of spark plug,
may lead to piston overheating and engine
failure.
·Refit the H.T. leads in the correct order (as
illustration), ensuring that the leads are
firmly seated onto the plugs.IGNITION WIRING & H.T. LEAD CHECK
Check the H.T. leads for insulation cracking,
or corrosion at end contacts. If the H.T. leads
are damaged, replace with new leads of the
same specification.
NOTE:Ensure leads are reconnected in the
correct order or the engine will misfire. 
						

							Workshop maintenance
119
DRIVE BELTS
Driving belt tension
The drive belt and all pulleys should be
examined regularly for any damage,
deterioration or fouling (grit, mud, oil etc).
Replace or clean where necessary.
After every off-road session, the drive belt
should be inspected for cuts and possible
damage caused by stones. If the belt has
jumped, reposition it correctly and, if
necessary, replace it at the earliest
opportunity.
WARNING
Before checking any drive belt; to prevent
the possibility of serious injury, follow the
battery disconnection procedure (see Owner
maintenance) to prevent the engine from
being started. 
						

							Workshop maintenance
120 MAIN GEARBOX OIL RENEWAL
WARNING
For safety, DO NOT work underneath the
vehicle unless it is safely parked with the
wheels chocked, or is supported by heavy
duty stands.
Extreme care should be taken when draining
gearbox oil, it may be hot and cause severe
scalding.
Ensure the vehicle is parked on firm, level
ground and chock the wheels. Place a suitable
container under the gearbox to catch the used
oil.
WARNING
Use only NEW oil - DO NOT use oil
previously drained from the system.
·Withdraw the gearbox dipstick, located to
the rear of the right hand rocker cover, to
assist with oil drainage.
·Remove the drain plug (2) and allow the
oil to drain completely.
·Clean and refit the drain plug, using a new
sealing washer (3). Tighten the plug to a
torque of 10 Nm (7.5 lbf/ft).
·Refill the gearbox through the dipstick
tube with new oil of the correct
specification (see General data).
·Let the vehicle stand for five minutes, then
check the oil level using the dipstick (as
described inOwner maintenance)and top
up until the correct level is obtained.
·Refit the dipstick. 
						

							Workshop maintenance
121 TRANSFER GEARBOX OIL RENEWAL
WARNING
For safety, DO NOT work underneath the
vehicle unless it is safely parked with the
wheels chocked, or is supported by heavy
duty stands.
Extreme care should be taken when draining
gearbox oil, it may be hot and cause severe
scalding.
Ensure the vehicle is parked on firm, level
ground and chock the wheels. Place a suitable
container under the gearbox to catch the used
oil.
·Clean the area surrounding the drain plug
(2) and filler level (3) plug, to prevent
contamination of the gearbox.
·Remove the drain plug (2) and allow the
oil to drain completely.
·Clean and refit the plug with a new
washer. Tighten to a torque of 30 Nm (23
lbf/ft).
·Remove the filler level plug (3) and inject
the correct grade of oil (seeGeneral data)
until it begins to run from the hole.
WARNING
Use only NEW oil - DO NOT use oil
previously drained from the system.
·Clean and refit the filler level plug. Tighten
to a torque of 30 Nm (23 lbf/ft).
·Wipe any surplus oil from the area and
remove the wheel chocks. 
						

							Workshop maintenance
122 FRONT/REAR AXLE OIL RENEWAL
WARNING
For safety, DO NOT work underneath the
vehicle unless it is safely parked with the
wheels chocked, or is supported by heavy
duty stands.
Extreme care should be taken when draining
axle oil, it may be hot and cause severe
scalding.
NOTE:A rear axle is illustrated, but the
procedure is the same for both axles.
Ensure the vehicle is parked on firm, level
ground and chock the wheels. Place a suitable
container under the axle to be drained to catch
the used oil.
·Clean the area surrounding the drain plug
(2) and filler level plug (3), to prevent
contamination of the axles.
·Remove the drain plug (2) and allow the
oil to drain completely.
·Clean and refit the drain plug.
·Remove the filler level plug (3) and inject
the correct grade of oil (seeGeneral data)
until it begins to run from the hole.
WARNING
Use only NEW oil - DO NOT use oil
previously drained from the system.
·Clean and refit the filler level plug.
·Wipe any surplus oil from the area and
remove the wheel chocks. 
						

							Workshop maintenance
123 BRAKE PAD, DISC AND CALIPER CHECK
If the vehicle is being operated in arduous
conditions, especially when deep mud and/or
wading situations are regularly encountered,
the condition of the brake pads, discs and
calipers should be checked at least weekly, if
not even more frequently.
Hydraulic disc brakes are fitted to the front
and rear wheels, they are self adjusting and
therefore, no provision for manual adjustment
is made.
·Check the thickness of the brake pads,
which should not be less than 0.125 in
(3 mm).
·Check for uneven brake pad wear.
·Check for oil contamination on the brake
discs and pads.
·Check condition of the brake discs for
wear and/or corrosion.
·Check the brake calipers for any leaking
brake fluid.
If necessary, any replacement or rectification
of discs, brakes or calipers, should be carried
out by a Land Rover dealer. 
						

							Workshop maintenance
124 HANDBRAKE CHECK/ADJUSTMENT
WARNING
For safety, DO NOT work underneath the
vehicle unless it is safely parked with the
wheels chocked, or is supported by heavy
duty stands.
Ensure the vehicle is parked on firm, level
ground and chock the wheels.
Select P and release the handbrake.
If the handbrake movement is excessive,
adjust as follows:
·Raise one rear wheel clear of the ground
and ensure it is supported securely with
an axle stand.
·Tighten the adjusting bolt (5) to a torque
of 25 Nm (18 lbf/ft) and ensure that the
brake drum is locked - if this is not the
case, consult a Land Rover dealer.
·Now loosen the adjusting bolt by turning it
1.5 turns counter-clockwise.
The brake drum should now be free to rotate,
and the brakes shoes correctly adjusted.PROPELLER SHAFT LUBRICATION
·Clean all the grease nipples on the front
and rear propshaft universal joints (1).
Charge a low pressure hand grease gun
with the recommended grade of grease
(seeGeneral data) and apply to the
grease nipples (2).
WARNING
Any additional greasing of the propshaft
MUST be carried out by an authorised Land
Rover dealer. 
						

							125
SECTION 6
General data
Section Contents Page
Lubricants & fluids 127..................................
Capacities 129................................................
Engine data 130..............................................
Steering 130...................................................
Electrical system 130......................................
Replacement bulbs 130..................................
Dimensions 131.............................................
Off-road performance 131..............................
Towing weights 131.......................................
Vehicle weights 132........................................
Wheels & tyres 132........................................ 
						

							126 
						

							General data
127 LUBRICANTS AND FLUIDS
Recommendations for all climates and conditions.
COMPONENTS AMBIENT TEMPERATURE°C
Specification SAE -30 -20 -10 0 10 20 30 40 50
Engine sump
Oils must meet 5W/30
API service levels SG or SH 5W/40, 5W/50
10W/30
10W/40,
10W/50
10W/60
Main gearbox - automatic
ATF Dexron II or III
Transfer gearbox
MIL-L-2105 or 90W EP
MIL-L-2105B, C & D 80W EP
Final drive units, swivel pin housings
MIL-L-2105 or 90W EP
MIL-L-2105B, C & D 80W EP
Power steering
ATF M2C 33 (F or G) or
ATF Dexron II or III