Range Rover Classic. Manual — part 164
80
HEATING AND VENTILATION
4
DESCRIPTION AND OPERATION
Air direction flap
Flap moves across mixing chamber to direct the air
flow away from the heater matrix.
Air temperature flap
Control at HOT, flaps fully closed. All air flow passes
through heater matrix. As control is moved towards
COLD the flaps progressively open directing air flow
away from the heater matrix.
Control at COLD, flaps fully open.
V8 Engine: When both controls are at COLD, 2
micro-switches are closed and operate a vacuum
valve which closes the coolant valve.
Air conditioning
When an air conditioning unit is fitted, the mechanical
operation of the heater controls remains unaltered.
However the air conditioning evaporator is positioned
in front of the mixing chamber through which all air
flow passes.
HEATING AND VENTILATION
1
FAULT DIAGNOSIS
HEATER OUTPUT
Symptom:-
Heater emits cold air.
1. Engine running: Check coolant valve opens as a
temperature control is moved from COLD.
2. Check for engine running cold.
See COOLING
SYSTEM, Fault diagnosis, Engine Runs Cold
3. Check heater pipes and hoses for blockage or
restriction.
4. Check heater matrix for blockage or restriction,
flush system.
Heater emits warm air.
5. Engine running: Check coolant valve closes
when both temperature controls are moved to
COLD.
HEATING AND VENTILATION
1
REPAIR
HEATER BLOWER SWITCH AND ILLUMINATION
BULB
Service repair no - 80.10.22 - Switch
Service repair no - 86.48.73 - Bulb
Remove
1. Pull 3 knobs from rotary controls.
2. Pull knob from blower switch.
3. Remove 2 screws retaining graphics panel.
4. Remove graphics plate.
5. Remove capless bulb.
6. Remove 4 screws retaining switch.
7. Remove switch panel. Use plastic tube to assist
removal.
Blower switch
8. Pull blower switch from rear of panel.
9. Disconnect multiplug and remove blower switch.
Refit
10. Reverse removal procedure.
HEATER CONTROL UNIT
Service repair no - 80.10.42.
Remove
1. Disconnect battery negative lead.
2. Pull 3 knobs from rotary controls.
3. Pull knob from blower switch.
4. Remove 2 retaining screws and remove
graphics panel.
5. Remove 4 screws retaining switch.
6. Remove switch panel.
7. Release fascia centre louvre vent panel from its
fitted position to gain access to rear of panel.
See CHASSIS AND BODY, Repair, Dash
Panel Central Louvre Panel
80
HEATING AND VENTILATION
2
REPAIR
8. Disconnect 4 multiplugs and position harness
aside.
NOTE:
Do not carry out further
dismantling if component is removed for
access only.
9. Fan speed switch: remove fan speed switch
slide and push out fan speed switch.
10. Pull out light bulb disconnect terminals and
remove fan speed light strip.
11. Unclip 3 heater control cables from control unit.
12. Microswitch: Unclip 3 micro switches.
13. Cut cable tie and release wiring harness from
control unit.
14. Remove heater control unit.
Refit
15. Reverse removal procedure. Check the
satisfactory function of the controls before fitting
louvre vent panel.
CONTROL CABLES
Service repair no - 80.10.06 - Air flow
Service repair no - 80.10.25 - Temperature control
RH
Service repair no - 80.10.26 - Temperature control
LH
Remove
1. Release fascia centre louvre vent panel from its
fitted position to gain access to rear of panel.
See CHASSIS AND BODY, Repair, Dash
Panel Central Louvre Panel
2. Open glove box, manoeuvre side springs
through cut-outs and lower lid.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст