Range Rover Classic. Manual — part 166
HEATING AND VENTILATION
7
REPAIR
5. Remove fan retaining clip.
6. Remove fan.
7. Remove 2 screws securing motor to casing.
8. Remove blower motor.
Refit
9. Reverse removal procedure.
HEATER MATRIX
Service repair no - 80.20.29
Remove
1. Remove heater unit.
See AIR CONDITIONING,
Repair, Heater and Cooler Unit
2. Remove evaporator.
See AIR CONDITIONING,
Repair, Evaporator and Expansion Valve
3. Remove 2 screws and remove RH side footwell
outlet.
4. Remove heater pipe clips.
5. Slide heater matrix from casing.
6. Release 2 clips and remove 2 heater pipes from
matrix.
Refit
7. Reverse removal procedure.
HEATING AND VENTILATION
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
METRIC
M5
6
. . . . . . . . . . . . . . . . . . . . . . . . . ..
M6
9
. . . . . . . . . . . . . . . . . . . . . . . . . ..
M8
25
. . . . . . . . . . . . . . . . . . . . . . . . . .
M10
45
. . . . . . . . . . . . . . . . . . . . . . . . ...
M12
90
. . . . . . . . . . . . . . . . . . . . . . . . ...
M14
105
. . . . . . . . . . . . . . . . . . . . . . . . ..
M16
180
. . . . . . . . . . . . . . . . . . . . . . . . ..
UNC / UNF
1/4
9
. . . . . . . . . . . . . . . . . . . . . . . . . ..
5/16
24
. . . . . . . . . . . . . . . . . . . . . . . . ...
3/8
39
. . . . . . . . . . . . . . . . . . . . . . . . . .
7/16
78
. . . . . . . . . . . . . . . . . . . . . . . . ...
1/2
90
. . . . . . . . . . . . . . . . . . . . . . . . . .
5/8
136
. . . . . . . . . . . . . . . . . . . . . . . . .
Torque values above apply to all screws and bolts used unless otherwise specified.
AIR CONDITIONING
1
DESCRIPTION AND OPERATION
AIR CONDITIONING SYSTEM COMPONENTS
1. Compressor
2. Condenser
3. Receiver/drier
4. Evaporator
5. High pressure servicing connection
6. Low pressure servicing connection
7. Dual pressure switch
8. Sight glass
82
AIR CONDITIONING
2
DESCRIPTION AND OPERATION
SCHEMATIC LAYOUT OF THE AIR CONDITIONING
SYSTEM
1. Compressor
2. Condenser
3. Receiver/drier
4. Thermostatic expansion valve
5. Evaporator
6. Capillary tube
7. Dual pressure switch
8. Cooling fans to maintain air flow
9. Compressor high pressure relief valve
10. Sight glass - refrigerant
11. Drying agent - receiver/drier
12. Blower motor
A1
Ambient air flow through condenser
A2
Ambient air flow through fan and evaporator
A3
Cooled air flow to vehicle interior
F1
High pressure high temperature refrigerant
vapour
F2
High pressure slightly subcooled refrigerant
liquid
F3
High pressure slightly subcooled refrigerant
liquid with moisture, vapour bubbles and foreign
matter removed
F4
Low pressure low temperature mixed liquid and
vapour
F5
Low pressure slightly superheated refrigerant
vapour
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