Discovery 2. Manual — part 719

AIR CONDITIONING

REPAIRS

82-39

Sensor - air temperature

$% 82.20.93

Remove

1. Release 2 quarter turn screws to release fascia

access panel.

2. Lower fascia access panel.

3. Disconnect multiplug from air temperature

sensor.

4. Remove 2 screws securing air temperature

sensor to fascia.

5. Remove air temperature sensor from fascia.

Refit

1. Position air temperature sensor to fascia and

secure with screws.

2. Connect multiplug to air temperature
3. Position and secure fascia access panel with

quarter turn screws.

AIR CONDITIONING

82-40

REPAIRS

Evaporator, evaporator thermistor and
thermal expansion valve (TXV)

$% 82.25.20

Remove

1. Remove heater assembly.

+

HEATING AND VENTILATION,

REPAIRS, Heater assembly - models with
air conditioning.

2. Remove bulkhead and evaporator pipe seals.

3. Disconnect multiplug from evaporator

thermistor.

4. Remove 2 screws securing temperature control

servos to evaporator casing.

5. Remove 2 screws securing coolant pipe

support bracket to casing.

6. Remove screws securing coolant pipe saddle

clamp to casing and remove saddle.

7. Remove heater matrix.

8. Remove 5 screws securing casings.

AIR CONDITIONING

REPAIRS

82-41

9. Remove 12 spring clips securing casings.

10. Remove evaporator casing and collect

insulation.

11. Remove evaporator assembly.

12. Remove evaporator thermistor.

AIR CONDITIONING

82-42

REPAIRS

13. Remove covering from TX valve, release 2

clips securing TX valve to pipe.

14. Release 2 unions securing TX valve, remove

TX valve, remove and discard 'O' rings.

15. Release pipe union, remove pipe and discard

'O' ring.

Refit

1. Using a new 'O' ring, position pipe to

evaporator and tighten union.

2. Using new 'O' rings, position TX valve. Connect

pressure pipe union and tighten to 22 Nm (16
lbf. ft). Connect evaporator pipe and tighten to
32 Nm (24 lbf.ft).

3. Position TX valve sensor to pipe and secure

with clips.

4. Fit sensor covering.
5. Fit evaporator thermistor.
6. Fit evaporator assembly.
7. Fit insulation to evaporator casing and fit

casing.

8. Secure spring clips.
9. Fit and tighten casing screws.

10. Fit heater matrix, ensuring matrix temperature

is correctly positioned.

11. Fit coolant pipe saddle, fit and tighten screws

securing saddle and pipe bracket.

12. Fit and tighten temperature servo screws.
13. Connect multiplug to evaporator thermistor.
14. Clean any bulk head seal from casing.
15. Fit bulkhead and evaporator pipe seals.
16. Fit heater assembly.

+

HEATING AND VENTILATION,

REPAIRS, Heater assembly - models with
air conditioning.

Expansion valve - (TXV) - rear

$% 82.26.01

Remove

1. Depressurise air conditioning system.

+

AIR CONDITIONING, REFRIGERANT

RECOVERY, RECYCLING AND
RECHARGING, Refrigerant recovery,
recycling and recharging.

2. Remove rear lower trim casing.

+

INTERIOR TRIM COMPONENTS,

REPAIRS, Trim casing - side - loadspace.

3. Remove 5 bolts securing seat support bracket

and remove bracket.

4. Release insulation from TXV pipe unions and

sensor.

5. Remove clip securing sensor to pipe and

release sensor.