2000 LEXUS GS400 Service Repair Manual

AC0WD±01
AC±16
± AIR CONDITIONINGDRIVE BELT
2701 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
Installation is in the reverse order of removal (See page AC±15).
AFTER INSTALLATION, CHECK DRIVE BELT'S INSTALLATION CONDITION

I02353
GS400:
Low Pressure
Charging HoseHigh Pressure
Charging Hose
I02354
GS300:
Low Pressure
Charging HoseHigh Pressure
Charging HoseAC0WE±01
N04392
Sleeve
± AIR CONDITIONINGMANIFOLD GAUGE SET
AC±17
2702 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
MANIFOLD GAUGE SET
SET ON
1. CONNECT CHARGING HOSES TO MANIFOLD
GAUGE SET
Tighten the nuts by hand.
CAUTION:
Do not connect the wrong hoses.
2. CONNECT QUICK DISCONNECT ADAPTERS TO
CHARGING HOSES
Tighten the nuts by hand.
3. CLOSE BOTH HAND VALVES OF MANIFOLD GAUGE
SET
4. REMOVE CAPS FROM SERVICE VALVE ON REFRIG-
ERANT LINES
5. CONNECT QUICK DISCONNECT ADAPTERS TO SER-
VICE VALVES
HINT:
Push the quick disconnect adapter onto the service valve, then
slide the sleeve of the quick disconnect adapter downward to
lock it.

AC0WF±01
N06553
AC±18
± AIR CONDITIONINGMANIFOLD GAUGE SET
2703 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
SET OFF
1. CLOSE BOTH HAND VALVES OF MANIFOLD GAUGE
SET
2. DISCONNECT QUICK DISCONNECT ADAPTERS
FROM SERVICE VALVES ON REFRIGERANT LINE
HINT:
Slide the sleeve of the quick disconnect adapter upward to un-
lock the adapter and remove it from the service valve.
3. INSTALL CAPS TO SERVICE VALVES ON REFRIGER-
ANT LINES

AC0WG±01
± AIR CONDITIONINGREFRIGERANT LINE
AC±19
2704 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REFRIGERANT LINE
ON±VEHICLE INSPECTION
1. INSPECT HOSE AND TUBE CONNECTIONS FOR LOOSENESS
2. INSPECT HOSES AND TUBES FOR LEAKAGE
Using a gas leak detector, check for leakage of refrigerant.

AC0WH±01
I03812
GS400:GS300:
I02359
I02358
Suction Hose
Liquid Tube
CondenserCompressor
Discharge Hose
10 (100, 7)
10 (100, 7)
10 (100, 7)
10 (100, 7)
10 (100, 7)
Liquid Tube
Suction Hose CondenserCompressor
Discharge Hose
Liquid Tube
N´m (kgf´cm, ft´lbf)
: Specified torque
10 (100, 7)
Suction Tube
10 (100, 7)
10 (100, 7)
Suction Tube AC±20
± AIR CONDITIONINGREFRIGERANT LINE
2705 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
COMPONENTS

AC0WI±01
± AIR CONDITIONINGREFRIGERANT LINE
AC±21
2706 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REPLACEMENT
1. DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM
2. REPLACE FAULTY TUBE OR HOSE
NOTICE:
Cap the open fittings immediately to keep moisture or dirt out of the system.
3. TIGHTEN JOINT OF BOLT OR NUT TO SPECIFIED TORQUE
NOTICE:
Connections should not be torqued tighter than the specified torqued.
Part tightenedN´mkgf´cmft´lbf
Compressor x Discharge hose101007
Compressor x Suction hose101007
Condenser x Discharge hose101007
Condenser x Liquid tube101007
A/C unit x Liquid and Suction tubes101007
Expansion valve x Liquid and suction tube4.14236 in.´lbf
Evaporator x Liquid and suction tube4.14236 in.´lbf
Suction line (Block joint)101007
4. EVACUATE AIR FROM REFRIGERATION SYSTEM AND CHARGE SYSTEM WITH REFRIGERANT
Specified amount: 600 ± 50 g (21.16 ± 1.76 oz.)
5. INSPECT FOR LEAKAGE OF REFRIGERANT
Using a gas leak detector, check for leakage of refrigerant.
6. INSPECT AIR CONDITIONING OPERATION

AC0WJ±01
I02365
Instrument Panel
Reinforcement
No.2 Brace
No.1 Brace
Water Hose
Bracket
Blower Unit Liquid Tube
Suction Hose
10 (100, 7)
Defroster Nozzle
Heater to Register
Center Duct
Air Duct
Air Duct RH
Center Air Duct
Air Duct LH

O±Ring
A/C Unit
N´m (kgf´cm, ft´lbf) : Specified torque

Non±reusable part
AC±22
± AIR CONDITIONINGAIR CONDITIONING UNIT
2707 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
AIR CONDITIONING UNIT
COMPONENTS

I02366
Wire Harness

Packing

Packing
Tube Connector
Evaporator Temperature
Sensor
Bracket Plate
Wire Harness

O±Ring
O±Ring
Tube and Accessory
4.1 (42, 36)
4.1 (42, 36)
Expansion Valve

O±Ring
Evaporator
Plate
Insulator Air Mix Servomotor
(Driver Side)
Air Outlet Servomotor
Air Duct
Cover
Drain PipeDrain Hose Air Mix Servomotor
(Passenger Side)
Heater Radiator
Blower Motor
Control Relay
N´m (kgf´cm, in.´lbf) : Specified torque

Non±reusable part

Packing
Air Duct
± AIR CONDITIONINGAIR CONDITIONING UNIT
AC±23
2708 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)