Workshop Manuals Factory service & repair Land Rover
01 Discovery Workshop Manual - 2nd Edition02 01 - INTRODUCTION03 04 - GENERAL SPECIFICATION DATA04 05 - ENGINE TUNING DATA05 07 - GENERAL FITTING REMINDERS06 09 - LUBRICANTS, FLUIDS AND CAPACITIES07 10 - MAINTENANCE08 12 - ENGINE - Tdi09 10 11 12 12 - ENGINE - V8i13 12 - ENGINE - 4.0 V814 12 - ENGINE - Mpi15 16 17 18 17 - EMISSION CONTROL19 19 - FUEL SYSTEM - Tdi20 19 - FUEL SYSTEM - MFI21 19 - FUEL SYSTEM - SFI22 19 - FUEL SYSTEM - Mpi23 19 - FUEL SYSTEM - Cruise Control24 26 - COOLING SYSTEM - Tdi25 26 - COOLING SYSTEM - V8i26 26 - COOLING SYSTEM - Mpi27 28 30 - MANIFOLD AND EXHAUST SYSTEM29 33 - CLUTCH30 37 - MANUAL GEARBOX - R38031 41 - TRANSFER GEARBOX32 44 - AUTOMATIC GEARBOX - ZF33 34 35 47 - PROPELLER SHAFTS36 51 - REAR AXLE AND FINAL DRIVE37 38 54 - FRONT AXLE AND FINAL DRIVE39 40 41 57 - STEERING42 43 44 60 - FRONT SUSPENSION45 64 - REAR SUSPENSION46 70 - BRAKES47 74 - WHEELS AND TYRES48 75 - SUPPLEMENTARY RESTRAINT SYSTEM49 76 - CHASSIS AND BODY50 51 80 - HEATING AND VENTILATION52 82 - AIR CONDITIONING53 84 - WIPERS AND WASHERS54 86 - ELECTRICAL
Land Rover 300Tdi Discovery52 · 82 - AIR CONDITIONING
52 · Heating & A/C

SERVICING PRECAUTIONS

Make
Land Rover
Model
Discovery 300Tdi Discovery
Section
ADJUSTMENT › SERVICING PRECAUTIONS
82 - AIR CONDITIONINGSERVICING PRECAUTIONS
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82

AIR CONDITIONING

2

ADJUSTMENT

SERVICING PRECAUTIONS

Care must be taken when handling refrigeration
system components. Units must not be lifted by their
hoses, pipes or capillary lines. Hoses and lines must
not be subjected to any twist or stress. Ensure that
hoses are positioned in their correct run before fully
tightening the couplings, and ensure that all clips and
supports are used. Torque wrenches of the correct
type must be used when tightening refrigerant
connections to the stated value. An additional wrench
must be used to hold the union to prevent twisting of
the pipe.
Before connecting any hose or pipe ensure that
refrigerant oil is applied to the seat of the new ’0’ ring
but not to the threads.
Check the oil trap for the amount of oil lost.
All protective plugs on components must be left in
place until immediately prior to connection.
The receiver/drier contains desiccant which absorbs
moisture. It must be positively sealed at all times.

CAUTION: Whenever the refrigerant
system is opened, the receiver/drier must
be renewed immediately before evacuating

and recharging the system.

Use alcohol and a clean cloth to clean dirty
connections.
Ensure that all new parts fitted are marked for use
with R134a.

Refrigerant oil

Use the approved refrigerant lubricating oil:
Nippon Denso ND-OIL 8
Unipart R134a ND-OIL8

CAUTION: Do not use any other type of
refrigerant oil.

Refrigerant oil easily absorbs water and must not be
stored for long periods. Do not pour unused oil back
into the container.
When renewing system components, add the
following quantities of refrigerant oil:

Condenser

40ml

..........................................................

Evaporator

80ml

..........................................................

Pipe or hose

20ml

........................................................

Receiver/drier

20ml

......................................................

Total of refrigerant oil in system = 180ml = 6.3 Fl
oz

A new compressor is sealed and pressurised with
Nitrogen gas, slowly release the sealing cap, gas
pressure should be heard to release as the seal is
broken.

NOTE: A new compressor should always
have its sealing caps in place and must
not be removed until immediately prior to

fitting

Fitting a new compressor
A new compressor is supplied with an oil fill (X) of:
180ml
A calculated quantity of oil must be drained from a
new compressor before fitting.
To calculate the quantity of oil to be drained:

1. Remove sealing plugs from the OLD compressor
2. Invert compressor and gravity drain oil into

measuring cylinder. Rotating the compressor
clutch plate will assist complete draining.

3. Note the quantity of oil drained (Y).
4. Calculate the quantity (Q) of oil to be drained

from the NEW compressor using the following
formula:

X - (Y + 20ml) = Q

Rapid refrigerant discharge
When the air conditioning system is involved in
accident damage and the circuit is punctured, the
refrigerant is discharged rapidly. The rapid discharged
of refrigerant will also result in the loss of most of the
oil from the system. The compressor must be
removed and all the remaining oil in the compressor
drained and refilled as follows:

1. Gravity drain all the oil, assist by rotating the

clutch plate (not the pulley).

2. Refill the compressor with the following amount

of new refrigerant oil:

130ml

3. Plug the inlet and outlet ports.

Parts & tools for this job Staging For Land Rover Discovery

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