Lexus SC300 / Lexus SC400. Manual - part 40

CONDENSER

ON–VEHICLE INSPECTION

1. 

INSPECT CONDENSER FINS FOR BLOCKAGE OR
DAMAGE
If the fins are clogged, wash them with water and dry with
compressed air.
NOTICE: Be careful not to damage the fins.
If the fins are bent, straighten them with a screwdriver or pli-
ers.

2. 

INSPECT CONDENSER AND FITTINGS FOR LEAKAGE
Using a gas leak tester, check for leakage.
If there is leakage, check the tightening torque at the joints.

REMOVAL OF CONDENSER

1. 

RECOVER REFRIGERANT IN REFRIGERATION SYSTEM
See page 

AC–16

2. REMOVE 

BATTERY

3. 

REMOVE CONDENSER UPPER COVER AND RADIATOR
FITTING BOLT

4. 

REMOVE UNDER COVER AND AIR FLOW COVER

5. 

REMOVE LIQUID TUBE AND SUCTION TUBE
Remove two bolts and both tubes.
NOTICE: Cap open the fittings immediately to keep mois-
ture out of the system.

6. REMOVE 

CONDENSER

Remove two nuts and lean the radiator backward, then re-
move the condenser.

AC–120

–

AIR CONDITIONING SYSTEM

Condenser

INSTALLATION OF CONDENSER

1. INSTALL 

CONDENSER

Install the condenser with two nuts.

2. 

INSTALL LIQUID TUBE AND DISCHARGE TUBE
Install both tubes with two bolts.

Specified torque:

Discharge tube 10 N

⋅

m (100 kgf

⋅

cm, 7 ft

⋅

lbf)

Liquid tube 10 N

⋅

m (100 kgf

⋅

cm, 7 ft

⋅

lbf)

NOTICE: Don’t remove caps until the tube is installed.

3. 

IF CONDENSER WAS REPLACED, ADD COMPRESSOR
OIL TO COMPRESSOR

ADD 40–50 cc (1.4–1.7 ft.oz.)

Compressor oil: ND OIL 6,

SUNISO NO. 5 GS or equivalent

4. EVACUATE 

AIR 

IN 

REFRIGERATION 

SYSTEM 

AND

CHARGE WITH REFRIGERANT
See page 

AC–17

Specified amount: 950 

±

 50 g (33.44 

±

 1.76 oz)

5. 

INSPECT FOR LEAKAGE OF REFRIGERATN
Using a gas leak tester, check for leakage of refrigerant.

6. INSTALL 

REMOVAL 

PARTS

Install the removal parts in reverse order of removal proce-
dure.

–

AIR CONDITIONING SYSTEM

Condenser

AC–121

EVAPORATOR

REMOVAL OF EVAPORATOR

1. 

DISCONNECT NEGATIVE (–) CABLE FROM BATTERY

2. 

RECOVER REFRIGERANT IN REFRIGERATION SYSTEM
See page 

AC–16

3. 

REMOVE ABS ACTUATOR
See page 

BR–48

4. 

REMOVE LIQUID TUBE AND SUCTION TUBE
Remove two bolts and both tubes.

5. 

REMOVE EQUALIZER TUBE FROM EPR
Remove the bole and the tube.
NOTICE: Cap the open fittings immediately to keep mois-
ture out of the system.

6.  REMOVE UNDER COVER GLOVE BOX AND SIDE AIR

DUCT

7. DISCONNECT 

CONNECTORS 

AND 

REMOVE 

POWER

STEERING RELAY BOX COOLING FAN COMPUTER AND
TRC COMPUTER

AC–122

–

AIR CONDITIONING SYSTEM

Evaporator

8.  PULL FLOOR CARPET DOWN AND REMOVE

COMPUTER COVER

9. 

REMOVE EVAPORATOR COVER AND FOOT AIR DUCT
BOLT

10. REMOVE EVAPORATOR

(a)  Remove six bolts and down the lower case.
(b)  Pull and remove the evaporator.

(c)  Pull out the evaporator sensor from the evaporator fins.
(d)  Remove two bolts using a hexagon wrench and

separate the evaporator and expansion valve.

INSPECTION OF EVAPORATOR

1. 

INSPECT FINS FOR BLOCKAGE
If the fins are clogged, clean them with compressed air.
NOTICE: Never use water to clean the evaporator.

2. 

INSPECT FITTINGS FOR CRACKS OR SCRATCHES
Repair as necessary.

–

AIR CONDITIONING SYSTEM

Evaporator

AC–123