2000 LEXUS GS400 Service Repair Manual

AC22C±01
I10090
10 mm (0.39 in.)
Hexagon
Wrench
Modulator
I10092
I10093
2 Layered
Part
I10091
Protrusion
I10094
± AIR CONDITIONINGCONDENSER
AC±49
2734 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REPLACEMENT
REPLACE DRYER FROM MODULATOR
(a) Using a hexagon wrench (10 mm, 0.39 in.), remove the
cap from the modulator.
(b) Remove the filter from the modulator.
(c) Using pliers, remove the dryer.
(d) Insert a new dryer into the modulator.
NOTICE:

Do not remove the dryer from a vinyl bag until insert-
ing it into the modulator.

Install the dryer with its 2 layered part faced upward
to the modulator.
(e) Insert the filter into the modulator.
NOTICE:
Install the filter with its protrusion faced downward to the
modulator.
(f) Install the cap to the modulator.
(1) Apply compressor oil to the o±rings and screw part
of the cap.
Compressor oil: ND±OIL 8 or equivalent
(2) Using a hexagon wrench (10 mm, 0.39 in.), install
the caps.
Torque: 12.3 N´m (125 kgf´cm, 9 ft´lbf)

AC0X1±01
AC±50
± AIR CONDITIONINGCONDENSER
2735 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
Installation is in the reverse order of removal (See page AC±48).

AC0X2±01
I02400
I02401
SST
± AIR CONDITIONINGEVAPORATOR
AC±51
2736 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
EVAPORATOR
REMOVAL
1. REMOVE A/C UNIT
(See page AC±24)
2. REMOVE HEATER RADIATOR
(See page AC±55)
3. REMOVE AIR MIX SERVOMOTOR PASSENGER SIDE
(a) Disconnect the connector.
(b) Remove the 3 screws and servomotor.
4. REMOVE TUBE AND ACCESSORY
(a) Pry out packing.
HINT:
At the time of installation, please refer to the following item.
Do not reuse the packing.
(b) Using SST, remove the 2 bolts and the tube and accesso-
ry.
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 time of installation, please refer to the following item.
Lubricate 2 new O±rings with compressor oil and install them
to the tube.
(c) Remove screw and drain pipe.

I02402
AC±52
± AIR CONDITIONINGEVAPORATOR
2737 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
5. REMOVE EVAPORATOR
(a) Disconnect the connector from blower motor control
relay.
(b) Remove the screw and drain hose.
(c) Remove the 4 screws and cover.
(d) Pull out the evaporator.
HINT:
At the time of installation, please refer to the following item.
If evaporator is replaced, add compressor oil to evaporator.
Add 40 cc (1.4 fl. oz.)
Compressor oil: ND±OIL 8 or equivalent

AC0X3±01
± AIR CONDITIONINGEVAPORATOR
AC±53
2738 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. CHECK EVAPORATOR FINS FOR BLOCKAGE
If the fins are clogged, clean them with compressed air.
NOTICE:
Never use water to clean the evaporator.
2. CHECK FITTING FOR CRACKS OR SCRATCHES
If necessary, repair or replace.

AC0X4±01
AC±54
± AIR CONDITIONINGEVAPORATOR
2739 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
Installation is in the reverse order of removal (See page AC±51).

AC0X5±01
I02403
± AIR CONDITIONINGHEATER RADIATOR
AC±55
2740 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
HEATER RADIATOR
REMOVAL
1. REMOVE A/C UNIT (See page AC±24)
2. REMOVE HEATER RADIATOR
(a) Remove the screw and clamp.
(b) Pull out the heater radiator.

AC0X6±01
AC±56
± AIR CONDITIONINGHEATER RADIATOR
2741 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
INSPECT FINS FOR BLOCKAGE
If the fins are clogged, clean them with compressed air.