Page 1 of 969
550BQ-01
AC2810
AC2811
N11084
Wrong Okay
HI
LO HI LO
- HEATER & AIR CONDITIONERAIR CONDITIONING SYSTEM
55-1
2616 Author: Date:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
AIR CONDITIONING SYSTEM
PRECAUTION
1. DO NOT HANDLE REFRIGERANT IN AN ENCLOSED
AREA OR NEAR AN OPEN FLAME
2. ALWAYS WEAR EYE PROTECTION
3. BE CAREFUL NOT TO GET LIQUID REFRIGERANT IN
YOUR EYES OR ON YOUR SKIN
If liquid refrigerant gets in your eyes or on your skin.
(a) Wash the area with lots of cool water.
CAUTION:
Do not rub your eyes or skin.
(b) Apply clean petroleum jelly to the skin.
(c) Go immediately to a physician or hospital for professional
treatment.
4. NEVER HEAT CONTAINER OR EXPOSE IT TO NAKED
FLAME
5. BE CAREFUL NOT TO DROP CONTAINER AND NOT
TO APPLY PHYSICAL SHOCKS TO IT
6. DO NOT OPERATE COMPRESSOR WITHOUT
ENOUGH REFRIGERANT IN REFRIGERANT SYSTEM
If there is not enough refrigerant in the refrigerant system oil lu-
brication will be insufficient and compressor burnout may occur,
so take care to avoid this, necessary care should be taken.
7. DO NOT OPEN HIGH PRESSURE MANIFOLD VALVE
WHILE COMPRESSOR IS OPERATING
If the high pressure valves opened, refrigerant flows in the re-
verse direction and could cause the charging cylinder to rup-
ture, so open and close the only low pressure valve.
8. BE CAREFUL NOT TO OVERCHARGE SYSTEM WITH
REFRIGERANT
If refrigerant is overcharged, it causes problems such as insuffi-
cient cooling, poor fuel economy, engine overheating etc.
Page 6 of 969
I22122
Condition: Cooling system does not function.
NOTE : These gauge indica-
tions are shown when the
refrigerating system has
been opens and the refriger-
ant charged without vacuum
purging.
I22123
Condition: Refrigerant functions insufficient. 55-6
- HEATER & AIR CONDITIONERREFRIGERANT
2621 Author: Date:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
(7) Air present in refrigeration system
SymptomProbable causeDiagnosisCorrective Actions
Pressure too high on both low
and high pressure sides
The low pressure piping too hot
to the touch
Bubbles seen through sight glass
Air entered in refrigerating system
Air present in refrigerating sys-
tem
Insufficient vacuum purging
(1) Check compressor oil to see if
it is see if it is dirty or insufficient
(2) Evacuate air and supply new
refrigerant
(8) Expansion valve improperly
SymptomProbable causeDiagnosisCorrective Actions
Pressure too high on both low
and high pressure sides
Frost or large amount of dew on
piping on low pressure side
Trouble in expansion valve
Excessive refrigerant in low
pressure piping
Expansion valve opened too
wide
Check expansion valve
Page 8 of 969
550D5-02
I30082
Over charged Mean
value
in proper
range Add. 100g
High
Pressure
Refrigerant Amount Point where
bubbles disappear 50 g (1. 76 oz.) Amount to be charged
Sub-cool system 55-8
- HEATER & AIR CONDITIONERREFRIGERANT
2623 Author: Date:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
REPLACEMENT
1. DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM
(a) Turn the A/C switch ON.
(b) Operating the cooler compressor at the engine rpm of approx. 1,000 for 5 to 6 min., circulate the refrig-
erant and collect compressor oil remaining in each component into the cooler compressor as much
as possible.
(c) Stop the engine.
(d) Let the refrigerant gas out.
SST 07110-58060 (07117-58080, 07117-58090, 07117-78050, 07117-88060, 07117-88070,
07117-88080)
2. CHARGE REFRIGERANT
(a) Using a vacuum pump, perform a vacuum pumping.
(b) Charge refrigerant, HFC-134a (R134a).
Standard: 550 50 g (19.37 1. 76 oz.)
SST 07110-58060 (07117-58060, 07117-58070, 07117-58080, 07117-58090, 07117-78050,
07117-88060, 07117-88070, 07117-88080)
3. WARM UP ENGINE
4. INSPECT LEAKAGE OF REFRIGERANT
Page 15 of 969
550DA-02
I31632
Instrument Panel Reinforcement
Instrument Panel
Brace Sub-assy No. 2
Instrument Finish Panel Retainer Lower
Air Duct Rear No. 2 Air Duct Rear No. 1 Instrument Panel
Brace Sub-assy
Console Box Duct No. 1
Defroster Nozzle
Assy Lower
Piping ClampO-ring
Blower Assy
Heater To Foot Duct No. 1
Air Conditioning Radiator Assy Heater To Foot Duct No. 3
Compressor Oil ND-OIL 8 or equivalent
Non-reusable part
NVm (kgfVcm, ftVlbf)
: Specified torque1.5 (15, 12 in.Vlbf)
O-ring
9.8 (100, 87 in.Vlbf)
1.5 (15, 12 in.Vlbf)
1.5 (15, 12 in.Vlbf)
1.5 (15, 12 in.Vlbf)
20 (203, 14)
- HEATER & AIR CONDITIONERAIR CONDITIONING RADIATOR ASSY
55-15
2630 Author: Date:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
AIR CONDITIONING RADIATOR ASSY
COMPONENTS
Page 16 of 969
I31633
Compressor Oil ND-OIL 8 or equivalent
Non-reusable part
NVm (kgfVcm, ftVlbf): Specified torque
3.5 (35, 30 in.Vlbf)
Heater Radiator Unit Sub-assy Piping Clamp Mode Damper Servo Sub-assy
Cooler Thermistor No. 1 Cooler Evaporator Sub-assy No. 1Packing Air Conditioning Tube Assy
Cooler Expansion Valve
O-ring
Air Mix Damper Servo
Sub-assy
Air Mix Damper Servo
Sub-assy
55-16
- HEATER & AIR CONDITIONERAIR CONDITIONING RADIATOR ASSY
2631 Author: Date:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
Page 26 of 969
I31520
I31520
I31640
I316394 Claws
I31518Claw 55-26
- HEATER & AIR CONDITIONERAIR CONDITIONING RADIATOR ASSY
2641 Author: Date:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
(e) Remove the 2 O-rings from the cooler evaporator sub-
assy No. 1.
30. INSTALL COOLER EVAPORATOR SUB-ASSY NO.1
(a) Apply compressor oil to the contact surfaces of 2 new O-
rings and the cooler expansion valve and install them.
Compressor oil: ND-OIL 8 or equivalent
(b) Install the cooler evaporator sub-assy No. 1 to the heater
case RH.
(c) Install the heater case LH with the 11 screws.
(d) Install the air duct sub-assy.
(e) Install the air duct sub-assy with the 3 screws.
Page 27 of 969
I31517
I31516
I31515
I31511
I31552
(1)(2)(2)
(3)(3)
- HEATER & AIR CONDITIONERAIR CONDITIONING RADIATOR ASSY
55-27
2642 Author: Date:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
31. INSTALL COOLER EXPANSION VALVE
(a) Install the cooler expansion valve to the cooler evaporator
No. 1.
32. INSTALL AIR CONDITIONING TUBE ASSY
(a) Apply compressor oil to the contact surfaces of 2 new O-
rings and the air conditioning tube assy and install them.
Compressor oil: ND-OIL 8 or equivalent
(b) Using a hexagon wrench 4 mm (0.16 in.), install the air
conditioner tube assy and 2 hexagon bolts to the cooler
evaporator sub-assy No. 1.
Torque: 3.5 NVm (35 kgfVcm, 30 in.Vlbf)
(c) Install the packing.
HINT:
Securely attach so that the gap in the packing will not be mode.
33. INSTALL AIR CONDITIONING RADIATOR ASSY
(a) Install the air conditioning radiator assy with the 2 nuts.
Torque: 1.5 NVm (15 kgfVcm, 12 in.Vlbf)
34. INSTALL DEFROSTER NOZZLE ASSY LOWER
(a) Install the defroster nozzle assy lower.
NOTICE:
After locating the pin (1) in the illustration, install (2), then
(3).
Page 32 of 969
I06878
Connect
GapWrong 55-32
- HEATER & AIR CONDITIONERAIR CONDITIONING RADIATOR ASSY
2647 Author: Date:
2005 LEXUS ES330 REPAIR MANUAL (RM1124U)
42. INSTALL COOLER REFRIGERANT SUCTION HOSE
NO.1
(a) Lubricate new O-ring with compressor oil and install them
to the hose.
Compressor oil: ND-OIL 8 or equivalent
(b) Install the cooler refrigerant suction hose No.1 and piping
clamp.
HINT:
After connection, check the fitting for claw of the piping clamp.
43. INSTALL COOLER REFRIGERANT LIQUID PIPE A
HINT:
Install in the same way as the cooler refrigerant suction hose No. 1.
44. ADD COOLANT (See page 16-9)
45. CHARGE REFRIGERANT (See page 55-8)
SST 07110-58060 (07117-58060, 07117-58070, 07117-58080, 07117-58090, 07117-78050,
07117-88060, 07117-88070, 07117-88080)
Specified amount: 550 50 g (19.37 1.76 oz.)
46. WARM UP ENGINE
47. CHECK ENGINE COOLANT LEAK (See page 16-9)
48. INSPECT LEAKAGE OF REFRIGERANT (See page 55-8)
