Isuzu Trooper (2000 year). Manual - part 23

HEATING, VENTILATION AND AIR CONDITIONING (HVAC) 1A–61

9. Disconnect drain hose.

10. Disconnect refrigerant line.

D

Use a back-up wrench when disconnecting and
reconnecting the refrigerant lines.

D

When removing the refrigerant line connected part,
the connecting part should immediately be plugged
or capped to prevent foreign matter from being
mixed into the line.

11. Remove evaporator assembly.

Installation

To install, follow the removal steps in the reverse order,
noting the following points:

1. To install a new evaporator assembly, add 50cc

(1.7 fl. oz.) of new compressor oil to the new core.

2. Tighten the refrigerant outlet line to the specified

torque.

Torque: 25 N

•

m (18 lb

•

ft)

3. Tighten the refrigerant inlet line to the specified

torque.

Torque: 15 N

•

m (11 lb

•

ft)

4. O-rings cannot be reused. Always replace with new

ones.

5. Be sure to apply new compressor oil to the O-rings

when connecting lines.

Electronic Thermostat, Evaporator Core and/or Expansion Valve

Disassembled View

874RX017

Legend

(1) Lining
(2) Expansion Valve
(3) O-ring
(4) Evaporator Assembly
(5) Lower Case

(6) Attaching Screw
(7) Lining
(8) Evaporator Core
(9) Electronic Thermostat

(10) Upper Case

Removal

1. Disconnect the battery ground cable.

2. Discharge and recover refrigerant.

D

Refer to Refrigerant Recovery in this section.

1A–62 HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

3. Remove evaporator assembly.

D

Refer to Evaporator Assembly in this section.

4. Remove the electronic thermostat sensor fixing clip.

Pull the sensor from the evaporator assembly.

5. Remove clip.
6. Remove attaching screw.
7. Remove upper case.
8. Remove lower case.

D

Slit the case parting face with a knife since the lining
is separated when removing the evaporator.

874RS006

D

Lift to remove the upper case.

874RY00005

9. Remove evaporator core.

874RY00006

10. Remove expansion valve.

D

Tear off the insulator carefully.

D

Remove the sensor fixing clip.

D

Use a back-up wrench when disconnecting all
refrigerant pipes.

Installation

To install, follow the removal steps in the reverse order,
noting the following points:

1. The sensor is installed on the core with the clip.
2. The sensor must not interfere with the evaporator

core.

3. When installing the new evaporator core, install the

thermo sensor (2) to the evaporator core (1) specified
position with the clip in the illustration.

874RX021

4. O-rings cannot be reused. Always replace with new

ones.

5. Be sure to apply new compressor oil to the O-rings

when connecting lines.

HEATING, VENTILATION AND AIR CONDITIONING (HVAC) 1A–63

6. Be sure to install the sensor and the insulator on the

place where they were before.

7. To install a new evaporator core, add 50cc (1.7 fl. oz.)

of new compressor oil to the new core.

8. Tighten the refrigerant lines to the specified torque.

Refer to Main Data and Specifications for Torque
Specifications in this section.

9. Apply an adhesive to the parting face of the lining

when assembling the evaporator assembly.

Air Conditioning Switch and Illumination Bulb

Air Conditioning Switch, Illumination Bulb and Associated Parts

865RS003

Legend

(1) Control Lever Assembly

(2) Illumination Bulb
(3) A/C Switch

Removal

1. Disconnect the battery ground cable.
2. Remove control lever assembly.

D

Refer to Control Lever Assembly in this section.

3. Lift up the catch portion (1) of the switch and remove

the air conditioning switch (2) while pushing it toward
the outside.

865RS004

4. Turn the illumination bulb counterclockwise to

remove.

Installation

To install, follow the removal steps in the reverse order.

1A–64 HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

Refrigerant Line

Refrigerant Line and Associated Parts

852RY00013

Legend

(1) Clip and Clamp
(2) Suction Line (Low Pressure Hose)
(3) Liquid Line (High-Pressure Pipe)

(4) Discharge Line (High Pressure Hose)
(5) Air Cleaner
(6) Radiator Grille
(7) Suction Line (Low-Pressure Pipe)

Removal

1. Disconnect the battery ground cable.
2. Discharge and recover refrigerant.

D

Refer to Refrigerant Recovery in this section.

3. Remove radiator grille.
4. Remove air cleaner.
5. Remove clip and clamp.
6. Disconnect liquid line (High-pressure pipe).

7. Disconnect suction line (Low-pressure pipe) using a

back-up wrench.

8. Disconnect suction line (Low-pressure hose) using a

back-up wrench.

9. Disconnect discharge line (High-pressure hose)

using a back-up wrench.

D

Use a backup wrench when disconnecting and
reconnecting the refrigerant lines.