Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Service manual — part 1090
1A–82 HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
Checking and Adjusting for
Compressor Replacement
150 cc (5.0 fl.oz.) of oil is charged in compressor (service
parts). So it is necessary to drain the proper amount of oil
from the new compressor.
1. Perform oil return operation.
2. Discharge and recover the refrigerant and remove the
compressor.
3. Drain the compressor oil and measure the extracted
oil.
4. Check the compressor oil for contamination.
5. Adjust the oil level as required.
(Amount of oil drained
from used compressor)
(Draining amount of oil
from new compressor)
less than 90 cc (3.0 fl.oz)
Same as drained
amount
more than 90 cc (3.0
fl.oz)
90 cc (3.0 fl.oz)
6. Evacuate, charge and perform the oil return
operation.
7. Check the system operation.
Contamination of Compressor Oil
Unlike engine oil, no cleaning agent is added to the
compressor oil. Even if the compressor runs for a long
period of time (approximately one season), the oil never
becomes contaminated as long as there is nothing wrong
with the compressor or its method of use.
Inspect the extracted oil for any of the following
conditions:
D
The capacity of the oil has increased.
D
The oil has changed to red.
D
Foreign substances, metal powder, etc., are present
in the oil.
If any of these conditions exists, the compressor oil
is contaminated. Whenever contaminated
compressor oil is discovered, the receiver/drier must
be replaced.
Oil Return Operation
There is close affinity between the oil and the refrigerant.
During normal operation, part of the oil recirculates with
the refrigerant in the system. When checking the amount
of oil in the system, or replacing any component of the
system, the compressor must be run in advance for oil
return operation. The procedure is as follows:
1. Open all the doors and the engine hood.
2. Start the engine and air conditioning switch to “ON”
and set the fan control knob at its highest position.
3. Run the compressor for more than 20 minutes
between 800 and 1,000 rpm in order to operate the
system.
4. Stop the engine.
Replacement of Component Parts
When replacing the system component parts, supply the
following amount of oil to the component parts to be
installed.
(Component parts to be
installed)
(Amount of Oil)
Evaporator
50 cc (1.7 fl. oz.)
Condenser
30 cc (1.0 fl. oz.)
Receiver/dryer
30 cc (1.0 fl. oz.)
Refrigerant line (one
piece)
10 cc (0.3 fl. oz.)
HEATING, VENTILATION AND AIR CONDITIONING (HVAC) 1A–83
Main Data and Specifications
General Specifications
COMPRESSOR
Model
DKV-14G
Type
Vane rotary type
Number of vanes
5
Rotor diameter
64 mm (2.52 in.)
Stroke
8.75 mm (0.34 in.)
Displacement
140 cc (47.3 fl.oz.)
Maximum speed
7,000 rpm (up to 8,400 rpm)
Direction of rotation
Clockwise (Front-side view)
Lubrication system
Pressure differential type
Lubricant
R-134a Vane Rotary Type Compressor Oil
(AIPDN Part No.2-90188-301-0)
150 cc (5.0 fl.oz.)
Refrigerant
Refrigerant-134a (R-134a), 700 g (1.54 lbs.)
Shaft seal
Lip type
Weight
3.5 kg
MAGNETIC CLUTCH
Type
Electromagnetic single-plate dry clutch
Rated voltage
12 Volts D.C.
Current consumption
3.7 A
Starting torque
49 N·m (36 lb·ft)
Direction of rotation
Clockwise (Front-side view)
Weight
3.0 kg (6.6 lbs.)
1A–84 HEATING, VENTILATION AND AIR CONDITIONING (HVAC)
Torque Specifications
871RX028
HEATING, VENTILATION AND AIR CONDITIONING (HVAC) 1A–85
Special Tools
ILLUSTRATION
TOOL NO.
TOOL NAME
J-33939
Drive plate holder
J-33944-A
Drive plate puller
J-33944-4
Forcing screw
J-38424
Pulley puller pilot
J-8433
Pulley puller
J-24092-2
Pulley puller leg
ILLUSTRATION
TOOL NO.
TOOL NAME
J-33940-A
Pulley installer
J-8092
Drive handle
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст