air conditioning ISUZU TF SERIES 2004 Service Manual

1-18 HEATER AND AIR CONDITIONING
REFRIGERATION SYSTEM
(4J




RHD MODEL)


RTW410LF001101

HEATER AND AIR CONDITIONING 1-19

(6VED1, C24SE RHD MODEL)





RTW410LF000301

1-20 HEATER AND AIR CONDITIONING

(4J




LHD MODEL)


RTW410LF000101

HEATER AND AIR CONDITIONING 1-21

(6VE1, C24SE LHD MODEL)




RTW410LF000201

1-22 HEATER AND AIR CONDITIONING
FIXING TORQUE

(4J




RHD MODEL) N

m (kgf

m/lb

ft)

RTW410LF001201

HEATER AND AIR CONDITIONING 1-23

(6VE1, C24SE RHD MODEL) N
m (kgf
m/lb
ft)





RTW410LF000401

1-24 HEATER AND AIR CONDITIONING

(4J




, LHD MODEL) N
m (kgf
m/lb
ft)



RTW410LF001001

HEATER AND AIR CONDITIONING 1-25

(6VE1, C24SE LHD MODEL) N
m (kgf
m/lb
ft)


RTW410LF000901

1-26 HEATER AND AIR CONDITIONING
ON-VEHICLE SERVICE

PRECAUTIONS FOR REPLACEMENT OR
REPAIR OF AIR CONDITIONING PARTS
There are certain procedures, practices and precautions that
should be followed when servicing air conditioning systems:

Keep your work area clean.

Always wear safety goggle and protective gloves when
working on refrigerant systems.
 Beware of the danger of carbon monoxide fumes caused by
running the engine.

Beware of discharged refrigerant in enclosed or improperly
ventilated garages.


Always disconnect the negative battery cable and discharge
and recover the refrigerant whenever repairing the air
conditioning system.

When discharging and recovering the refrigerant, do not
allow refrigerant to discharge too fast; it will draw
compressor oil out of the system.

Keep moisture and contaminants out of the system. When
disconnecting or removing any lines or parts, use plugs or
caps to close the fittings immediately.
Never remove the caps or plugs until the lines or parts are
reconnected or installed.

When disconnecting or reconnecting the lines, use two
wrenches to support the line fitting, to prevent from twisting
or other damage.

Always install new O-rings whenever a connection is
disassembled.

Before connecting any hoses or lines, apply new specified
compressor oil to the O-rings.

When removing and replacing any parts which require
discharging the refrigerant circuit, the operations described
in this section must be performed in the following sequence:

1) Using the ACR
4 (HFC-134a Refrigerant Recovery/
Recycling/Recharging/System) or equivalent to
thoroughly discharge and recover the refrigerant.
ACR
4 (115V 60Hz) : 5-8840-0629-0 (J-39500-A)
ACR4 (220-240V 50/60Hz)
: 5-8840-0630-0 (J-39500-220A)
ACR
4 (220-240V 50/60Hz Australian model)
: 5-8840-0631-0 (J-39500-220ANZ)
2) Remove and replace the defective part.
3)
After evacuation, charge the air conditioning system and
check for leaks.

HEATER AND AIR CONDITIONING 1-27

REPAIR OF REFRIGERANT LEAKS
Refrigerant Line Connections


RTW410SH000101
Install new O-ring, if required. When disconnecting or
connecting lines, use two wrenches to prevent the connecting
portion from twisting or becoming damaged.


When connecting the refrigerant line at the block joint, securely
insert the projecting portion of the joint portion into the
connecting hole on the unit side and secure with a bolt.




Apply specified compressor oil to the O-rings prior to
connecting.

CAUTION:
Compressor (PAG) oil to be used varies according to
compressor model. Be sure to apply oil specified for the
model of compressor.



O-rings must be closely aligned with raised portion of
refrigerant line.