Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 1087

1A–70 HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

Refrigerant Line

Refrigerant Line and Associated Parts

852R100003

Legend

(1) Clip and Clamp
(2) Liquid Line (High-Pressure Pipe)

(3) Discharge Line (High-Pressure Hose)
(4) Radiator Grille
(5) 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 clip and clamp.
5. Disconnect liquid line (High-pressure pipe).
6. Disconnect suction line (Low-pressure pipe) using a

back-up wrench.

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

back-up wrench.

8. Disconnect discharge line (High-pressure hose)

using a back-up wrench.

D

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

D

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

HEATING, VENTILATION AND AIR CONDITIONING (HVAC) 1A–71

Installation

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

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

ones. 

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

when connecting lines.

3. Tighten the refrigerant line to the specified torque.

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

1A–72

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

Main Data And Specifications

General Specifications

Heater Unit
Temperature control

Reheat air mix system

Capacity

4.3 kw (3700 Kcal./hr.)

Air flow

280 m

!

/h

HEATER CORE
Type

Fin and tube type

Element dimension

167 mm (6.6 in.) 

´ 151 mm (5.9 in.) ´ 35 mm (1.4 in.)

Radiating area

Approx. 2.4 m

 

EVAPORATOR ASSEMBLY
Capacity

4.8 kw (4100 Kcal./hr.)

Air flow

430 m

!

/hr

EVAPORATOR CORE
Type

Al-laminate louver fin type

Element dimension

235 mm (9.3 in.) 

´ 224 mm (8.8 in.) ´ 60 mm (2.4 in.)

EXPANSION VALVE
Type

External pressure equalizer type

THERMOSTAT SWITCH
Type

Electronic thermostat

OFF: Below 1.0 

± 0.5 °C (33.8 ± 0.9 °F)

ON: Above 2.0 

± 0.3 °C (3.6 ± 0.5 °F)

CONDENSER
Type

Parallel flow type

Radiation performance

14.8 kw (12,700 Kcal./hr.)

RECEIVER/DRIER
Type

Assembly includes sight glass with dual (triple) pressure 
switch (V6) or pressure sensor (L4)

Internal volume

300 cc (10 fl.oz.)

PRESSURE SWITCH

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

1A–73

Type

Dual pressure switch

Low pressure control

ON: 205.9

±29.4 kPa (29.9±4.3 psi)

OFF: 176.5

±24.5 kPa (25.6±3.6 psi)

High pressure control

ON: 2353.6

±196.1 kPa (341.3±28.4 psi)

OFF: 2942.0

±196.1 kPa (426.6±28.4 psi)

Triple pressure switch (V6, A/T)

Low pressure control

ON: 196.3

±29.4 kPa (27.0±4.3 psi)

OFF: 176.5

±19.6 kPa (25.6±2.8 psi)

Medium pressure control

ON: 1471.0

±98.1 kPa (213.3±14.2 psi)

OFF: 1078.7

±117.7 kPa (156.4±17.7 psi)

High pressure control

ON: 2353.6

±196.1 kPa (341.3±28.4 psi)

OFF: 2942.0

±196.1 kPa (426.6±28.4 psi)

REFRIGERANT
Type

HFC-134a

Specified amount

700 g (1.54 lbs.)