Toyota Sequoia (2005). Manual - part 941

AC3GX–02

I21360

I03838

SST

I03839

SST

Push

SST

Pull

Release
Lever

AC–26

–

AIR CONDITIONING

COOLING UNIT

3753

REMOVAL

1.

DISCHARGE REFRIGERANT FROM REFRIGERATION
SYSTEM

HINT:
At the time of installation, refer to the following:

Evacuate air from the refrigeration system.

Charge the system with refrigerant and inspect for leak-
age of refrigerant.
Specified amount: 
Single A/C: 750 

±

 50 g (26.45 

±

 1.76 oz.)

Dual A/C: 1050 

±

 50 g (37.03 

±

 1.76 oz.)

2.

DISCONNECT LIQUID AND SUCTION TUBE

(a)

Using SST, remove the 2 piping clamps.
SST

09870–00015 (Suction tube)
09870–00025 (Liquid tube)

(1)

Install SST to the piping clamp.

HINT:
Confirm the directions of the piping clamp claw and SST using
the illustration on the caution label.

(2)

Push down SST and release the clamp lock.

NOTICE:
Be careful not to deform the tubes, when pushing SST.

(3)

Pull SST slightly and push the release lever, then re-
move the piping clamp with SST.

(4)

Remove the piping clamp from SST.

(b)

Disconnect both tubes.

I06919

Disconnect the tube 
by hand

Screwdriver

Tube

I06878

Connect

Wrong

Gap

I21374

–

AIR CONDITIONING

COOLING UNIT

AC–27

3754

NOTICE:

Do not use tools like a screwdriver to remove the
tube.

Cap the openings immediately to keep moisture or
dirt out of the system.

HINT:
At the time of reassembly, refer to the following:

Lubricate 4 new O–rings with compressor oil and install
them to the tubes.

After connection, check the claw of the piping clamp is se-
curely engaged.

3.

REMOVE CONSOLE UPPER PANEL

4.

REMOVE REAR CONSOLE BOX

5.

REMOVE FRONT CONSOLE BOX

6.

REMOVE GLOVE COMPARTMENT PARTS

7.

REMOVE LOWER NO. 2 FINISH PANEL

8.

REMOVE LOWER LH FINISH PANEL

9.

REMOVE LOWER COVER (See page 

BO–89

)

10.

REMOVE NO. 4 HEATER TO REGISTER DUCT

11.

REMOVE COOLING UNIT

(a)

Disconnect the connectors.

(b)

Remove the 3 screws and the bolt, then the cooling unit.

AC3GY–02

I21421

I21422

AC–28

–

AIR CONDITIONING

COOLING UNIT

3755

DISASSEMBLY

1.

REMOVE BLOWER MOTOR LINEAR CONTROLLER

Remove the 2 screws and blower motor linear controller.

2.

SEPARATE UPPER AND LOWER UNIT CASES

(a)

Disconnect the connector clamp of the thermistor from
the upper unit case.

(b)

Using a knife, cut off each packing.

(c)

Remove the clip, 6 screws, and grommet.

(d)

Separate the upper and lower unit cases, then pull out the
thermistor from the evaporator.

3.

REMOVE EVAPORATOR FROM LOWER UNIT CASE

HINT:
At the time of reassembly, refer to the following:
If the evaporator is replaced, add compressor oil to the com-
pressor.

Add 40 to 50 cc (1.4 to 1.7 fl.oz.)
Compressor oil: ND–OIL 8 or equivalent

4.

REMOVE EXPANSION VALVE

Using a hexagon wrench (5.0 mm (0.20 in.)), remove the 2 bolts
and separate the expansion valve, evaporator and tubes.

Torque: 5.4 N·m (55 kgf·cm, 48 in.·lbf)

HINT:
At the time of reassembly, refer to the following item:
Lubricate 4 new O–rings with compressor oil and install them
to the tubes and valve.

AC3GZ–02

–

AIR CONDITIONING

COOLING UNIT

AC–29

3756

INSPECTION

1.

CHECK EVAPORATOR FINS FOR BLOCKAGE

If the fins are clogged, clean them with compressed air.
2.

CHECK FOR CRACKS AND SCRATCHES

If necessary, repair or replace damaged parts.
3.

INSPECT THERMISTOR RESISTANCE (See page 

DI–2325

)