1999 LAND ROVER DEFENDER seats

GENERAL FITTING REMINDERS
1
INFORMATION GENERAL FITTING REMINDERS
WORKSHOP SAFETY IS YOUR RESPONSIBILITY!
The suggestions, cautions and warnings in the
section are intended to serve as reminders for
trained and experienced mechanics. This manual
is not a definitive guide to automotive mechanics
or workshop safety.
Shop equipment, shop environment, and the use
and disposal of solvents, fluids, and chemicals
are subject to government regulations which are
intended to provide a level of safety. It is your
responsibility to know and comply with such
regulations.
PRECAUTIONS AGAINST DAMAGE
1.Always fit covers to protect fenders before
commencing work in engine compartment.
2.Cover seats and carpets, wear clean overalls
and wash hands or wear gloves before working
inside vehicle.
3.Avoid spilling hydraulic fluid or battery acid on
paint work. Wash off with water immediately if
this occurs. Use Polythene sheets to protect
carpets and seats.
4.Always use a recommended Service Tool where
specified.
5.Protect temporarily exposed screw threads by
replacing nuts or fitting plastic caps.SAFETY PRECAUTIONS
1.Whenever possible, use a lift when working
beneath vehicle, in preference to jacking. Chock
wheels as well as applying parking brake.
WARNING: Do not use a pit when
removing fuel system components.
2.Never rely on a jack alone to support vehicle.
Use axle stands carefully placed at jacking
points to provide rigid support.
3.Ensure that a suitable form of fire extinguisher is
conveniently located.
4.Check that any lifting equipment used has
adequate capacity and is fully serviceable.
5.Disconnect battery.
WARNING: Do not disconnect any pipes in
air conditioning system, unless trained
and instructed to do so. A refrigerant is
used which can cause blindness if allowed to
contact eyes.
6.Ensure that adequate ventilation is provided
when volatile degreasing agents are being used.
7.Do not apply heat in an attempt to free stiff
fixings; as well as causing damage to protective
coatings, there is a risk of damage to electronic
equipment and brake linings from stray heat.
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10 - MAINTENANCE
CONTENTS
Page
MAINTENANCE
UNDERBONNET VIEW - Td5 1..............................................................................
SEATS AND SEAT BELTS 2..................................................................................
LAMPS, HORNS AND WARNING INDICATORS 2................................................
WIPERS AND WASHERS 3...................................................................................
HANDBRAKE 3.......................................................................................................
BATTERY CONDITION - Td5 4..............................................................................
HANDSET BATTERY 5...........................................................................................
HEADLAMP ALIGNMENT 5....................................................................................
ROAD WHEELS 6...................................................................................................
TYRE PRESSURES, CONDITION AND TREAD DEPTH 6....................................
BRAKE PADS, CALIPERS AND DISCS 7..............................................................
ROAD WHEEL SPEED SENSOR HARNESS - Td5 7............................................
FUEL FILTER ELEMENT 8.....................................................................................
FUEL FILTER SEDIMENTER - Td5 8.....................................................................
INTERCOOLER / COOLING SYSTEM 9................................................................
AMBIENT AIR PRESSURE (AAP) SENSOR - Td5 9..............................................
DOOR LOCKS AND HINGES 10............................................................................
ENGINE COOLANT 10...........................................................................................
BRAKE FLUID 11....................................................................................................
AIR FILTER ELEMENT AND DUMP VALVE 11.....................................................
AUXILIARY DRIVE BELT 12...................................................................................
PAS FLUID, CLUTCH FLUID AND SCREEN WASHER LEVELS 12.....................
STEERING BOX 13................................................................................................
ENGINE OIL 14.......................................................................................................
CENTRIFUGE ROTOR - Td5 14.............................................................................
FULL FLOW OIL FILTER 15...................................................................................
GEARBOX OIL 15...................................................................................................
TRANSFER BOX OIL 16.........................................................................................
FRONT AND REAR AXLE OIL 17..........................................................................
PROPELLER SHAFTS 18.......................................................................................
CLUTCH PIPES AND UNIONS 18..........................................................................
PAS PIPES AND UNIONS 19.................................................................................
ENGINE, GEARBOX, TRANSFER BOX AND AXLES 19.......................................
EXHAUST SYSTEM 20...........................................................................................
STEERING BOX AND SUSPENSION 20...............................................................
STEERING BALL JOINTS 21.................................................................................
SHOCK ABSORBERS 22.......................................................................................
TOWING BRACKET 22...........................................................................................
ENGINE AND TRANSMISSION MOUNTINGS 23..................................................
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10MAINTENANCE
2
MAINTENANCE SEATS AND SEAT BELTS
1.Check seat frames are secured to floor and
show no signs of movement.
2.Check operation of seat slide and tilt
mechanisms, ensuring there is no excessive
play between seat cushion and seat back.
3.Check tightness of accessible seat fixings.
4.Fully extract seat belt and allow it to return under
its own recoil mechanism.
5.Check entire length of seat belt webbing for
signs of fraying or damage. Repeat for all belts.
6.Check security of seat belt upper mountings.
7.Check security of seat belt buckle mountings.
8.Connect each belt to the correct buckle, check
seat belt buckle and tongue are secure. Release
seat belt buckle and check for correct operation.
9.Check tightness of accessible seat belt
mountingsLAMPS, HORNS AND WARNING INDICATORS
1.Switch on side, head and tail lights and check
operation.
2.Check headlamp dim/dip operation.
3.Check headlamp levelling operation.
4.Check turn signals and hazard warning lights
operation.
5.Press brake pedal and check operation of brake
lights.
6.Check all exterior lamp lenses for clarity and
condition. Pay particular attention to head lamp
lenses for signs of stone chips or damage.
7.Check horn for loud clear sound.
8.Check operation of all instrument pack warning
and indicator lights.
9.Check for correct operation of interior courtesy
lights.
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12ENGINE
28
DESCRIPTION AND OPERATION Inlet and exhaust valves
The inlet and exhaust valves are mounted directly above the engine block cylinders.
Each valve is a forged and ground solid one-piece head and stem which is hardened by heat treatment. The
stems are chrome-plated then ground for improved heat transfer, wear resistance and smooth operation. It is not
possible to recut the valve’s face angle, but the valves can be lapped to their seats using grinding paste.
The valve springs are made from spring steel and are of the parallel single-coil type. The bottom end of the spring
rests on the flange of a spring seal which has a centre bore that locates on a recess ground into the lower valve
stem. The top end of the spring is held in place by a spring cap which is held in position at the top end of the valve
stem by split taper collets. The taper collets have grooves on the internal bore that locate in grooves ground into
the upper stems of the valves.
The valve seats and valve guides are sintered and are an interference fit into the cylinder head. The valve seats
and guides are non-serviceable.
Finger followers and lash adjusters
1.Valve stem
2.Finger follower
3.Lash adjuster plunger4.Oil supply hole
5.Lash adjuster body
The valves are operated through finger followers and lash adjusters, actuated by the camshaft lobes. When the
camshaft lobe presses down on the top of a finger follower roller mechanism, the respective valve is forced down
opening the inlet or exhaust port.
The lash adjuster body contains a plunger and two chambers for oil feed and pressurised oil. Pressurised oil is
supplied to the lash adjusters via the oil galleries in the cylinder head and through a hole in the side of the lash
adjuster body. The oil passes into a feed chamber in the lash adjuster then through to a separate pressure
chamber via a one way ball valve. Oil flow from the pressure chamber is determined by the amount of clearance
between the lash adjuster outer body and the centre plunger, oil escapes up the side of the plunger every time the
lash adjuster is operated, the downward pressure on the plunger forcing a corresponding amount of oil in the lash
adjuster body to be displaced. When the downward pressure from the camshaft and finger follower is removed
(i.e. after the trailing flank of the camshaft lobe has passed), oil pressure forces the lash adjuster’s plunger up
again. This pressure is not sufficient to effect the valve operation, but eliminates the clearance between the finger
follower and top of the valve stem.
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ENGINE
23
REPAIR FILTER - OIL
Service repair no - 12.60.04
Remove
1.Remove 3 bolts and remove engine acoustic
cover.
2.Release clip and disconnect breather hose from
camshaft cover.
3.Release clips and disconnect air flow meter from
air filter.
4.Disconnect multiplug from air flow meter.
5.Loosen clip screw and remove air inlet hose
from turbocharger.
6.Remove 3 bolts and remove manifold heat
shield.
7.Clean area around filter head and place a
container beneath engine.
8.Using a strap wrench, unscrew and discard filter.
Refit
9.Clean mating face of filter head.
10.Lubricate sealing ring of new filter with clean
engine oil.
11.Fit filter and tighten by hand until it seats then
tighten a further half turn.
12.Start and run engine to check for leaks.
13.Stop engine, wait a few minutes, then check oil
level.
14.Top up engine oil.
15.Position exhaust manifold heat shield and
tighten 3 bolts.
16.Position air inlet hose to turbocharger and
tighten clip screw.
17.Connect air flow meter to air filter and secure
clips.
18.Connect air flow meter multiplug.
19.Connect breather hose and secure with clip.
20.Position engine acoustic cover.
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33CLUTCH
6
DESCRIPTION AND OPERATION DESCRIPTION
General
The clutch system is a diaphragm type clutch operated by a hydraulic cylinder. The drive plate is of the rigid centre
type with no integral damping springs. The flywheel is of the dual mass type with damping springs integral with the
flywheel. The clutch requires no adjustment to compensate for wear.
Hydraulic Clutch
The hydraulic clutch comprises a master cylinder, slave cylinder and a hydraulic reservoir. The master and slave
cylinders are connected to each other hydraulically by plastic and metal pipes. The plastic section of the pipe
allows ease of pipe routing and also absorbs engine movements and vibrations.
The master cylinder comprises a body with a central bore. Two ports in the body connect the bore to the hydraulic
feed pipe to the slave cylinder and the fluid reservoir. The bore is also connected to a damper which prevents
engine pulses being transferred hydraulically to the clutch pedal. A piston is fitted in the bore and has an external
rod which is attached to the clutch pedal with a pin. Two coil springs on the clutch pedal reduce the effort required
to depress the pedal.
The master cylinder is mounted on the bulkhead and secured with two bolts. The cylinder is connected to the
shared brake/clutch reservoir on the brake servo by a braided connecting hose.
The slave cylinder is located on the left hand side of the gearbox housing and secured with two bolts. A heat
shield is fitted to protect the underside of the slave cylinder from heat generated from the exhaust system. The
slave cylinder comprises a cylinder with a piston and a rod. A port in the cylinder body provides the attachment for
the hydraulic feed pipe from the master cylinder. A second port is fitted witha bleed nipple used for removing air
from the hydraulic system after servicing. The piston rod locates on a clutch release lever located in the gearbox
housing. The rod is positively retained on the release lever with a clip.
Clutch Mechanism
The clutch mechanism comprises a flywheel, drive plate, pressure plate, release lever and a release bearing. The
clutch mechanism is fully enclosed at the rear of the engine by the gearbox housing.
A clutch release bearing sleeve is attached in the gearbox housing with two bolts and located on two dowels. A
spigot with a ball end is formed on the release bearing sleeve and provides a mounting and pivot point for the
clutch release lever. A dished pivot washer is located on the ball of the spigot. When the release lever is located
on the ball, the pivot washer seats against the rear face of the release lever. A spring clip is located on the lever
and the pivot washer and secures the lever on the spigot. A small bolt retains the spring clip in position.
The release lever is forked at its inner end and locates on the clutch release bearing carrier. The outer end of the
release lever has a nylon seat which locates the slave cylinder piston rod. A second nylon seat, positioned
centrally on the release lever, locates on the ball spigot of the release bearing sleeve and allows the release lever
to pivot freely around the ball.
The clutch release bearing locates on the clutch release lever and release bearing sleeve. The bearing is retained
on a carrier which has two flats to prevent the carrier rotating on the release lever. A clip retains the release lever
on the carrier. The bearing and carrier are not serviceable individually.
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CHASSIS AND BODY
1
DESCRIPTION AND OPERATION FRONT SEAT RECLINE - FROM 02MY
Front seat recline has been improved by removing the bulkhead situated behind the front seats. This enables the
front seats to be reclined further than previous Defender 90’s.
This change is only applicable to 90 County Station Wagon models. Six seat derivatives of this model will provide
greater incline of the front seats and increased cabin space.
SOFT TOP - FROM 02MY
The soft top is replaced by an improved version manufactured from PVC. The PVC soft top gives the following
improvements:
Resistance to shrinkage
No zips
Resistant to dust and water ingress
Weld seams and joints
Non cotton base construction
Easy to clean
Beach Bar
A beach bar, currently used on military vehicles only, will be introduced for fitment on all 02MY soft top vehicles.
The bar is located behind the front seats and is manufactured from large diameter steel tubing with a diagonal bar
which gives additional rigidity.
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CHASSIS AND BODY
3
REPAIR LATCH - TAIL DOOR - UP TO 02MY
Service repair no - 76.37.16
Remove
1.Remove tail door trim casing.See this Section.
2.Collect latch cover.
3.Remove 2 screws securing latch to door and
collect captive nut bracket.
4.Remove 2 nuts securing latch to door and collect
captive bolt bracket.
5.Remove latch assembly and collect foam
gasket.
Refit
6.Fit foam gasket and latch assembly to tail door.
7.Fit captive nut and bolt brackets to tail door.
8.Secure latch to tail door with nuts and screws.
9.Fit cover to latch.
10.Fit tail door trim casing.See this Section.CARPET - LUGGAGE COMPARTMENT
Service repair no - 76.49.04
Remove
1.Remove 7 screws and remove carpet retainer.
2.Remove bolt covers and remove rear seat belt
bolts.
3.Release rear seat catches and fold seats
forward.
4.Remove luggage compartment carpet.
Refit
5.Position carpet.
6.Fold rear seats to position.
7.Align rear seat belts and tighten tighten bolts.
8.Fit bolt covers.
9.Position carpet retainer and tighten screws.
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