1995 LAND ROVER DISCOVERY Workshop Manual

AIR CONDITIONING
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
Air conditioning
Compressor flange bolts 10............................................................................
Receiver drier union bolts 6...........................................................................
Dual pressure switch 11..................................................................................
Pressure pipe union nuts - M16 14.................................................................
Discharge pipe union nuts - M22 22...............................................................
Suction pipe union nuts - M24 33...................................................................
AIR CONDITIONING CHARGE DATA
Total oil in system 180ml - 6.3Fl oz...........................................................................
Total refrigerant in system 0,90kg - 32Fl oz..............................................................
Total refrigerant in system with rear air conditioning 1,15kg - 40Fl oz.......................

WIPERS AND WASHERS
1
DESCRIPTION AND OPERATION WINDSCREEN WIPER AND WASHER OPERATION
The illustration below locates and identifies the main
components of the windscreen and washer system
which is operated by a multi-switch on the right hand
side of the steering column.
All functions of the system are described in the
following paragraphs.
1. Multi-switch
2. Wiper motor
3. Wiper arm/blade
4. Washer reservoir
5. Windscreen washer motor/pump
6. Non return valve
7. Washer jet
8. Rear window washer motor pump
9. Non return valve10. Headlamp power wash motor/pump
11. Headlamp power washer jet
12. Non return valve
13. Rear window wiper switch
14. Rear window washer switch
15. Rear window wiper motor, arm and blade
16. Washer jet

84WIPERS AND WASHERS
2
DESCRIPTION AND OPERATION Wash wipe function
With the ignition switched on, power is supplied via a
fuse to the multi-switch, a control unit and a park
switch which is driven by the wiper motor.
Single wipe A
Pull the lever down and release immediately.
NOTE: With the lever held down, the
wipers will continue operating at high
speed until it is released.
Intermittent wipe B
Turn switch to second position.
Normal speed wipe C
Turn switch to second position.
Fast speed wide D
Turn switch to third position.
Variable delay (intermittent wipe)
Rotate the switch to vary the delay between wipes.
Windscreen washer E
Pull the lever towards the steering wheel. The
windscreen washers will operate in conjunction with
the wipers for as long as the lever is held in this
position.
Headlamp washers
The headlamp washers operate automatically
whenever the windscreen washers are operated,
provided the headlamps are illuminated and switched
to dipped beam. For continuous washing, hold the
windscreen washer control in the washposition E.
REAR WINDOW WIPER AND WASHER
OPERATION
The illustration J5375 also locates and identifies the
main components of the rear window wiper and
washer system which is operated by two switches
mounted on the right hand side of the instrument
binnacle.
Rear window wipe A
Press the switch to operate: after continuously wiping
3 or 4 times, the wiper operates intermittently (approx
once every 6 seconds) until switched off.
Rear window washer B
Press and hold the switch for the required duration of
rear screen washing. The wiper operates
automatically during washing and continues for a
further 3 wipes after the switch is released.

WIPERS AND WASHERS
1
FAULT DIAGNOSIS WIPER MOTOR CHECKING
NOTE: These instructions apply to
windscreen and rear window wiper motor.
If unsatisfactory operation of wiping equipment is
experienced, a systematic check to determine fault
should be carried out:
1.Check blades for signs of excessive friction. This
reduces wiping speed of motor and cause
increased current draw which may damage
armature. Check by substitution.
2.Check windscreen wiper motor light running
current and speed with motor coupling link
disconnected from wiper shaft transmission
linkage.
Check rear window glass wiper motor with wiper
connected and glass wet. Connect an ammeter in
series with motor supply. Measure current
consumption when motor is switched on. Check
operating speed by timing speed of rotation of motor
coupling link. The results should compare with figures
given in 'General Specification Data'.
NOTE: If vehicle wiring connections are
disconnected and an alternative supply
source is applied it is essential that
correct polarity is observed. Failure to observe
this will cause motor to rotate in reverse direction,
which may result in limit switch contacts being
damaged.
3.If motor does not run satisfactorily or takes
higher than normal current, a fault exists and
must be remedied.
4.If current consumption and speed of motor are
satisfactory. A check should be carried out for
proper functioning of transmission linkage and
wiper arm shafts.
NOTE: Service parts are not available for
windscreen and rear window wiper motors
with exception of windscreen wiper rotary
connecting link.

WIPERS AND WASHERS
1
REPAIR WASHER RESERVOIR
Service repair no - 84.10.03.
Remove
1.Remove two bolts securing top of reservoir.
2.From underneath the wheelarch remove two
bolts securing base of reservoir.
3.Withdraw reservoir and disconnect tubing from
washer pumps and power wash.
4.Disconnect electrical leads from pumps.
Refit
5.Reverse removal procedure. 1 to 4.WASHER PUMP - WINDSCREEN, REAR WINDOW
OR POWER WASH
Service repair no - 84.20.21.
Remove
1.Remove washer reservoir.See Washer
reservoir
2.Disconnect washer tubing from pump.
3.Disconnect electrical leads from pump.
4.Pull top of pump away from its location in
reservoir and remove pump.
Note position of sealing gasket in reservoir.
Refit
5.Reverse removal procedure. 1 to 4.

84WIPERS AND WASHERS
2
REPAIR WINDSCREEN WASHER JETS
Service repair no - 84.10.09.
Remove
1.Disconnect washer tube from jet.
2.Remove nut and washer securing washer jet to
air intake cowl.
3.Remove jet.
Refit
4.Reverse removal procedure. 1 to 3.WINDSCREEN WASHER TUBES
Service repair no - 84.10.15.
Remove
1.Disconnect tubing from reservoir pump.
2.Disconnect tubing from washer jets.
3.Disconnect tubing from three-way tee piece.
4.Release tubing from retaining clip and withdraw.
Refit
5.Reverse removal procedure. 1 to 4. Ensuring the
tubing is not pinched or restricted.

WIPERS AND WASHERS
3
REPAIR WIPER ARMS - WINDSCREEN
Service repair no - 85.15.01.
Remove
1.Lift wiper arm end cap to gain access to securing
nut.
2.Remove nut and withdraw wiper arm from
splined boss.
Refit
3.Allow wiper motor to move to 'park' position.
4.Push arm onto splined boss, locating it so that
wiper blades are clear of windscreen rail.
5.Fit and tighten securing nut.
6.Push end cap over securing nut.
7.Operate wiper on a wet windscreen to ensure
blades do not over travel.WIPER ARM - REAR WINDOW
Service repair no - 84.35.01.
Remove
1.Remove plastic nut cover and wiper arm
securing nut.
2.Withdraw wiper arm and grommet from splined
boss.
Refit
3.Allow wiper motor to move to 'park' position.
4.Fit spacer and wiper arm to splined boss so that
the wiper blade is clear of rear window surround.
5.Fit and tighten securing nut.
6.Push plastic nut cover into position.
7.Check operation of wiper.

84WIPERS AND WASHERS
4
REPAIR WIPER BLADES
Service repair no - 84.15.05
Remove
1.Pull wiper blade away from screen.
2.Depress spring clip and withdraw blade from
hooked end of wiper arm.
Refit
3.Reverse removal procedure. 1 and 2.REAR WINDOW WASHER JET
Service repair no - 84.30.09
Remove
1.Turn washer jet in a clockwise direction to
release it from the rear quarter panel.
2.Remove rear quarter/speaker trim panel.
3.Feed washer tubing through rear quarter panel
to allow removal of washer jet.
4.Remove washer jet from tubing.
Refit
5.Reverse removal procedure. 1 to 4.
NOTE: The tubing run from the reservoir to
rear door washer jet differs between left
and right hand drive vehicles. On right
hand vehicles the tubing run is on the left hand
side of the roof. On left hand drive vehicles, the
right side.
See Description and operation,
Windscreen Wiper and Washer Operation