Jaguar XJ (X350). Manual — part 1206

4 . Tighten to 25 Nm.

5 . Tighten to 25 Nm.

6 . Tighten to 7 Nm.

7 . Carry out the cooling system filling and bleeding procedure. <<303-03>>

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412-02B : Auxiliary Heating

Specifications

Specifications

Torque Specifications

Description

Nm lb-ft lb-in

Fuel fired booster heater retaining bolts 9

-

80

Description and operation

Fuel Fired Booster Heater

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 fuel line attached to
the fuel pump module. Fuel is drawn from the fuel tank by 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 module 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.

Item Part Number

Description

1

Air intake silencer

2

Air intake hose

3

Coolant outlet hose

4

Fuel fired booster heater assembly

5

Coolant inlet hose

6

Fuel fired booster heater bracket

7

Exhaust silencer assembly

The fuel fired booster heater is located behind the right-hand side of the front bumper and is

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