Jaguar XJ (X350). Manual — part 1189

Manifold Gauge Set Connection

1.

WARNING: Use extreme care and observe all safety precautions related to the

use of refrigerants. Failure to follow this instruction may result in personal injury.

WARNING: For additional information, refer to the manufacturers equipment

instructions. Failure to follow this instruction may result in personal injury and system
damage.

Install the manifold gauge set. For additional information, refer to the manufacturers
equipment instructions.


2. Carry out the repair.


3. Remove the manifold gauge set. For additional information, refer to the manufacturers
equipment instructions.


4. Carry out flourescent dye leak detection test.
Fluorescent Dye Leak Detection


5. Check air conditioning (A/C) system for correct operation.

Refrigerant Oil Adding

CAUTION: Make sure when disconnecting air conditioning (A/C) connections,

that the exposed ports are capped immediately. Make sure you do not leave the A/C
system open to the atmosphere. Failure to follow this instruction may result damage to
the vehicle.

NOTE:

A new replacement A/C compressor is pre-filled with ND8 oil.

1. Drain the oil from the old compressor and measure the quantity of oil drained.


2. Drain the oil from the new compressor into a clean container.


3.

CAUTION: If less than 30 cc of oil was drained from the old compressor, then 30

cc of oil must be refilled into the new compressor. Failure to follow this instruction may
result in damage to the vehicle.

NOTE:

Use the new compressor oil to refill to the required quantity.

Refill the new compressor with the same amount of oil which was measured from the old
compressor.
Specifications

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Refrigerant System Tests

1.

WARNING: Use extreme care and observe all safety precautions related to the

use of refrigerants. Failure to follow this instruction may result in personal injury.

WARNING: The A/C refrigerant analyzer must be used before the recovery of

any vehicle's A/C refrigerant. Failure to do so puts shop bulk refrigerant at risk of
contamination. If the vehicle A/C refrigerant is contaminated, refer the customer to
return to the repair facility that carried out the last A/C repair. If the customer wishes
to pay the additional cost, use the A/C recovery equipment that is designated for
recovering contaminated A/C refrigerant. All contaminated A/C refrigerant must be
disposed of as hazardous waste. For all equipment, follow the equipment manufacturers
procedures and instructions. Failure to follow this instruction may result in personal
injury.

NOTE:

Jaguar Cars Ltd. supports the efficient usage, recovery and recycling of the refrigerant
used in passenger car air conditioners. Jaguar Cars Ltd. recommends the use of UL-
approved recovery/recycling device such as R-134a A/C refrigerant center (which meets
SAE Standard J 1991) during any A/C system repair and recharge procedure which
requires that the system be evacuated.

Use R-134a A/C Refrigerant Centre to evacuate and recover the A/C system.

•

Follow the equipment manufactures procedures and instructions for use of equipment.

Description and operations

Climate Control System

The purpose of the air distribution system is to route air to the designated registers. This is

accomplished when air enters the heater core and evaporator core housing and is directed to the

desired ducts by the use of air distribution doors.

The air distribution system contains the heater core and evaporator core, blower motor and

distribution doors. All of the air is mixed and distributed from the heater core and evaporator core

housing assembly depending on the distribution door positions.

For additional information, refer to Air Distribution and Filtering (412-01)

Heating/Defrosting

The heating system is an air blend controlled system. The ambient air is passed through the cabin air

filter, directed through the evaporator core, through and/or around the heater core, mixed and

distributed from the heater core and evaporator housing to the floor, panel and/or the defrost ducts

as desired. For additional information, refer to Heating and Ventilation (412-02A)

Auxiliary Heater - Vehicles with Diesel engine

The system consists of a fuel operated heater unit and a fuel dosing pump.

Fuel for the heater system is taken from the vehicle fuel tank, through a line attached to the fuel

pump module. Fuel is drawn from the fuel tank by a lift pump and supplied via the dosing pump to

the heater unit. In the heater unit, the fuel delivered by the fuel pump is burned and the resultant

heat output is used to heat the engine coolant.

An electronic control unit (ECU) integrated into the heater unit controls the operation of the heater

unit and the dosing pump. The climate control unit controls the operation of the re-circulation flaps

on initial start up. For additional information, refer to Fuel Fired Booster Heater (412-02B)

Heater Core and Evaporator core

The heater core consists of a number of fins and tubes in an arrangement to extract heat from the

engine coolant and transfer the heat to the air that passes through the heater core. The evaporator

core is a plate/fin type arrangement. For additional information, refer to Air Conditioning (412-03A)

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