radiator ISUZU TF SERIES 2004 Owners Manual
Page 3095 of 4264
HEATER AND AIR CONDITIONING 1-85
RESULT SYMPTOM TROUBLE CAUSE CORRECTION
Discharge
(High)
pressure
gauge
abnormally
high Reduced or no air flow through
the condenser
Condenser clogged or dirty
Radiator (condenser) fan
does not operate properly
Clean
Check cooling fan
operation
No bubbles in sight glass when
condenser is cooled by water
(Insufficient cooling)
Excessive refrigerant in
system
Check sight glass.
(See “Reading Sight
Glass”)
Discharge and
recover refrigerant.
Recharge to specified
amount
After stopping air conditioning,
pressure drops approx. 196 kPa
(2.0kg/cm
2 / 28 PSI) quickly
Air in system
Evacuate and charge
refrigerant system
Discharge
(High)
pressure
gauge
abnormally
low Insufficient cooling and excessive
bubbles in the sight glass
Insufficient refrigerant in
system
Check sight glass.
(See “Reading Sight
Glass”)
Check for leaks
Discharge and
recover refrigerant.
Recharge to specified
amount
Low pressure gauge indicates
vacuum
Clogged or defective
expansion valve
Replace the
expansion valve
Frost or dew on refrigerant line
before and after receiver/ drier or
expansion valve, and low pres-
sure gauge indicates vacuum Restriction caused by debris
or moisture in receiver/drier
Check system for
restriction and
replace receiver/drier
After turning off air conditioning,
high and low pressure gauge
balanced quickly
Compressor seal defective
Poor compression due to
defective compressor
gasket
Replace or repair
compressor
Suction
(Low)
pressure
gauge
abnormally
high Low pressure gauge is lowered
after condenser is cooled by
water
Excessive refrigerant in
system
Discharge and
recover refrigerant
Recharge to specified
amount
Low pressure hose temperature
around the compressor refrigerant
line connector is lower than
around evaporator
Unsatisfactory valve
operation due to defective
temperature sensor of
expansion valve
Expansion valve opens too
long
Replace the
expansion valve
After turning off air conditioning,
high and low pressure gauge is
balanced quickly
Compressor gasket is
defective
Replace
Air conditioning turns off before
passenger compartment is
sufficiently
cool Electronic thermostat
defective
Check the electronic
thermostat and
replace as necessary
* For the charging and discharging operations in the table above, refer to “RECOVERY, RECYCLING,
EVACUATION AND CHARGING” in this section.
Page 3096 of 4264
1-86 HEATER AND AIR CONDITIONING
RESULT SYMPTOM TROUBLE CAUSE CORRECTION
Suction
(Low)
pres-sure
abnormally
low
Condenser is not hot and
excessive bubble in sight glass
Insufficient refrigerant
Check sight
glass.(See “Reading
Sight Glass”)
Check for leaks
Discharge and
recover refrigerant.
Recharge to specified
amount
Frost on the expansion valve inlet
line
Expansion valve clogged
Replace the
expansion valve
A distinct difference in
temperature between the inlet and
outlet refrigerant lines of the
receiver/drier
Receiver/drier clogged
Replace the receiver/
drier
Expansion valve outlet refrigerant
line is not cold and low-pressure
gauge indicates vacuum
The temperature sensor of
the expansion valve is
defective, and the valve
cannot regulate the correct
flow of the refrigerant
Replace the
expansion valve
Discharge temperature is low and
air flow from vents is restricted
Frozen evaporator core fins
Check electronic
thermostat and
replace as necessary
Low-pressure gauge reading is
low, or a vacuum reading may be
shown
Clogged or blocked
refrigerant line
Replace refrigerant
line
Suction
(Low) and
Discharge
(High)
pressure
abnor-
mally
high
No bubbles in sight glass after
condenser is cooled by water
(Insufficient cooling)
Excessive refrigerant in
system
Check sight
glass.(See “Reading
Sight Glass”)
Discharge and
recover refrigerant.
Recharge to specified
amount
Reduce air flow through con-
denser
Condenser clogged
Radiator (condenser) fan
does not rotate properly
Clean
Check cooling fan
operation
Suction (Low) pressure hose is
not cold
Air in system
Evacuate and charge
refrigerant
Suction
(Low) and
Discharge
(High)
pres-sure
abnor-
mally
low
Insufficient cooling and excessive
bubbles in the sight glass
Insufficient refrigerant in
system
Check sight glass.
(See “Reading Sight
Glass”)
Check for leaks
Discharge and
recover refrigerant.
Recharge to specified
amount
Page 3950 of 4264
7A1-4 CONSTRUCTION AND FUNCTION
MAIN DATA AND SPECIFICATION
Model JR405E
Torque Converter Type Three Elements, One Stage & Two Phase Type
With Lock-up Function
Torque Converter Stall Torque Ratio 1.8
Name ATF DEXRON
Quantity 9.2L-9.6L AT F
Cooling System Water Cooled Type (Radiator)
1st 2.786
2nd 1.546
3rd 1.000
4th (Over Drive) 0.694
Gear Ratio
Reverse 2.273
Low Clutch L/C 7
High Clutch H/C 5
Reverse Clutch R/C 2Number of Disc Clutch
Low One-way Clutch L/O.C 1 Set
Low & Reverse
Brake L&R/B 6
Brake
2-4 Brake 2-4/B 5Number of Disc
Sun Gear 33
Pinion
Gear 21Front Planetary
Ring Gear 75
Sun Gear 42
Pinion
Gear 17
Planetary Gear Unit
Rear Planetary
Ring Gear 75Number of Teeth