Lexus GS300/400 (2000 year). Service manual - part 15

AC0X7–01

–

AIR CONDITIONING

HEATER RADIATOR

AC–57

2742

INSTALLATION

Installation is in the reverse order of removal (See page 

AC–55

).

AC0X8–01

AC–58

–

AIR CONDITIONING

EXPANSION VALVE

2743

EXPANSION VALVE

ON–VEHICLE INSPECTION

1.

CHECK QUANTITY OF GAS DURING REFRIGERATION CYCLE

2.

SET ON MANIFOLD GAUGE SET
(See page 

AC–17

)

3.

RUN ENGINE

Run the engine at 1,500 rpm for at least 5 minutes.
Then check that the high pressure reading is 1.37 – 1.57 MPa (14 – 16 kgf/cm

2

, 199 –228 psi).

4.

CHECK EXPANSION VALVE

If the expansion valve is faulty, the low pressure reading will drop to 0 kPa (0 kgf/cm

2

, 0 psi).

AC0X9–01

I02404

–

AIR CONDITIONING

EXPANSION VALVE

AC–59

2744

REMOVAL

1.

DISCHARGE REFRIGERANT FROM REFRIGERATION
SYSTEM

HINT:
At the time of installation, please refer to the following item.
Evacuate air from refrigeration system.
Charge system with refrigerant and inspect for leakage of refrig-
erant.

Specified amount: 600 

± 

50 g (21.16 

±

 1.76 oz.)

2.

REMOVE INSTRUMENT PANEL
(See page 

BO–91

)

3.

REMOVE EXPANSION VALVE

(a)

Pry out the packings.

HINT:
At the in time of installation, please refer to the following item.
Do not reuse the packing.
(b)

Using SST, remove the 4 bolts and separate the expan-
sion valve and tube and accessory.
SST

07110–61050

Torque: 4.1 N·m (42 kgf·cm, 36 in.·lbf)

NOTICE:
Cap the open fittings immediately to keep moisture or dirt
out of the system.
HINT:
At the in time of installation, please refer to the following item.
Lubricate 6 new O–rings with compressor oil and install them
to the tube and valve.

AC0XA–01

AC–60

–

AIR CONDITIONING

EXPANSION VALVE

2745

INSTALLATION

Installation is in the reverse order of removal (See page 

AC–59

).