Toyota 2008 Camry Bedienungsanleitung

AIR CONDITIONING SYSTEM

–AIR CONDITIONING SYSTEM AC–1

PRECAUTIONS FOR SERVICING R134a AIR

CONDITIONERS

1. USE OF NEW REFRIGERANT R134a

The very different characteristics of refrigerants

R134a and R12 have determined the design of their

respective air conditioning systems. Under no circum–

stances allow R12 to enter an R134a system, or vice

versa, because serious damage could occur.

GENERAL DESCRIPTION

NEW AIR CONDITIONING SYSTEM WITH

R134a

Refrigerant R12 (CFC12), previously used in automo–

biles air conditioning systems is believed to contribute

towards the depletion the earth’s ozone layer. The

ozone layer help to protect us against the harmful

ultraviolet rays of the sun.

2. USE OF PROPER COMPRESSOR OIL

Compressor oil used in conventional R12 air condi–

tioning systems cannot be used in R 134a air condi–

tioning systems.

Always use genuine Toyota R1 34a air conditioning oil

N D – OIL 8, made expressly for use with R 1 34a.

If even a small amount of the wrong oil is changed, it

will result in clouding of the refrigerant.

A large amount will cause the compressor to seize up.

A newly developed refrigerant, R134 a (HFC 134 a),

does not the destroy the ozone layer.

–AIR CONDITIONING SYSTEM GENERAL DESCRIPTION

AC–2

4. TIGHTEN CONNECTING PARTS SECURELY

Securely tighten the connecting parts to prevent leak–

ing of refrigerant gas.

Apply a few drops of compressor oil to 0–ring

fittings for easy tightening and to prevent leaking

of refrigerant gas.

CAUTION: Apply only ND–OIL 8 compressor oil

Tighten the nuts using 2 wrenches to avoid twist–

ing the tube.

Tighten the 0–ring fittings or the bolted type

fittings to the specified torque.

5. INSERT PLUG IMMEDIATELY IN DISCONNECTED

PARTS

Insert a plug immediately in the disconnected parts to

prevent the ingress of moisture and dust.

6. DO NOT REMOVE PLUG FROM NEW PARTS UNTIL

IMMEDIATELY BEFORE INSTALLATION

3. USE OF PROPER O – RINGS AND SEALS

0–rings and seals used for conventional R12 air

conditioning systams cannot be used for R134a air

conditioning systems.

Always use genuine Toyota R 134a system 0–rings

and seals for R 1 34a air conditioning systems.

7. DISCHARGE GAS IN NEW COMPRESSOR FROM

CHARGING VALVE BEFORE INSTALLING IT

If the gas in the new compressor is not discharged

first, compressor oil will spray out with gas when the

plug is removed.

If O–rings and/or seals for R1 2 air conditioning sys–

tems are used by mistake in the connections of an R

134a air conditioning system, the O–ring and seals

will foam and swell resulting in leakage of refrigerant.

–AIR CONDITIONING SYSTEM GENERAL DESCRIPTION AC–3

3. USE VACUUM PUMP ADAPTER

By connecting a vacuum pump adapter, the vacuum

pump can be used for both R 134a and R 12 air condi–

tioning systems.

The vacuum pump adaptor has an internal magnetic

valve.

When evacuation is completed and the vacuum pump

switch is turned off, the magnetic valve opens allow–

ing the introduction atmospheric air into the manifold

gauges to prevent the back flow of oil from the

vacuum pump into the gauge hose.

CAUTION:

Be sure to turn off the manifold gauge valve immediately

after evacuating the system. Then you may switch off

the vacuum pump. If this order is reversed, the line will

be temporarily open to atmosphere.

SERVICE TOOLS FOR R134a AIR

CONDITIONER

When servicing R134a air conditioning systems

always use the R134a dedicated manifold gauges, gas

leak detector and vacuum pump adaptor.

1. USE MANIFOLD GAUGES FOR R134a AIR CONDITI–

ONER

Always use R134a dedicated manifold gauges to pre–

vent R1 2 and RI 2 compressor oil contaminating the R

134a system.

2. USE R134a GAS LEAK DETECTOR

Similarly, always use an R 134a dedicated leak detec–

tor. The R1 2 leak detector is not sufficiently sensitive.

–AIR CONDITIONING SYSTEM GENERAL DESCRIPTION

AC–4

3. BE CAREFUL THAT LIQUID REFRIGERANT DOES

NOT GET 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.

sional treatment.

HANDLING PRECAUTIONS FOR

REFRIGERANT CONTAINER

1. NEVER HEAT CONTAINER OR EXPOSE IT TO

NAKED FLAME

2. BE CAREFUL NOT TO DROP CONTAINER AND NOT

TO APPLY PHYSICAL SHOCKS TO IT

HANDLING PRECAUTIONS FOR

REFRIGERANT

1. DO NOT HANDLE REFRIGERANT IN AN ENCLOSED

AREA OR NEAR AN OPEN FLAME

2. ALWAYS WEAR EYE PROTECTION

CHARGING AND LEAK–CHECK METHODS

Evacuate the refrigeration system according to the

following procedures.

Fill refrigerant in gas state until

gauge pressure reads 1 kglcm2

Abnormal indication of

manifold gauges

Check and correct

pipe joints

Refrigerant

Charge

Refrigerant

Charge

Start

Evacuation Stop

Evacuation

Leave for 5 min.

Gas Leak

Check

Airtight

Check

10 min.

–AIR CONDITIONING SYSTEM GENERAL DESCRIPTION AC–5

CAUTION:

•Be sure to connect both the high and low pressure

quick–connectors onto the A/C system when eva–

cuating. If only one side is connected, the system

would be open to atmosphere through the other

connector, making it impossible to maintain

vacuum.

•Be sure to turn off the manifold gauge valve imme–

diately after evacuating the system. Then you may

switch off the vacuum pump.

PRECAUTIONS WHEN CHARGING

REFRIGERANT

1. DO NOT OPERATE COMPRESSOR WITHOUT

ENOUGH REFRIGERANT IN REFRIGERANT

SYSTEM

If there is not enough refrigerant in the refrigerant

system oil lubrication will be insufficient and compres–

sor burnout may occur, so take care to avoid this.

2. DO NOT OPEN HIGH PRESSURE MANIFOLD VALVE

WHILST COMPRESSOR IS OPERATING

If the high pressure valve is opened, refrigerant flows

in the reverse direction and could cause the charging

cylinder to rupture, so open and close the low pres–

sure valve only.

3. BE CAREFUL NOT TO OVERCHARGE WITH RE–

FRIGERANT IN SYSTEM

If refrigerant is overcharged, it causes problems such

as insufficient cooling, poor fuel economy, engine

overheating etc.

ELECTRICAL PARTS

Before removing and inspecting the electrical parts,

set the ignition switch to the LOCK position and

disconnect the negative (–) terminal cable from bat–

tery.

CAUTION: Work must be started after 90 seconds from

the time the Ignition switch is turned to the “LOCK”

position and the negative (–) terminal cable is discon–

nected from the battery.

–AIR CONDITIONING SYSTEM GENERAL DESCRIPTION

AC–6

SUPPLEMENTAL RESTRAINT SYSTEM

(SRS)

Failure to carry out service operations in the correct

sequence could cause the supplemental restraint

system to deploy, possibly leading to a serious acci–

dent.

During removal or installation of the parts and the

yellow wire harness and connector for the airbag is

necessary, refer to the precautionary notices in the RS

section before performing the operation.

CAUTION: Work must be started after 90 seconds from

the time the ignition switch is turned to the “LOCK”

position and the negative (–) terminal cable is discon–

nected from the battery.

–AIR CONDITIONING SYSTEM GENERAL DESCRIPTION AC–7

DESCRIPTION

PARTS LOCATION

–AIR CONDITIONING SYSTEM DESCRIPTION

AC–8

–AIR CONDITIONING SYSTEM DESCRIPTION AC–9

ELECTRICAL WIRING DIAGRAM

(Lever Type On 5S–FE Engine Model)

–AIR CONDITIONING SYSTEM DESCRIPTION

AC–10

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