1998 ISUZU TROOPER Service Repair Manual

ECO mode coolant reservoir manual radio set rear entertainment parking brake compression ratio

Page 273 of 3573

ISUZU TROOPER 1998 Service Repair Manual COMPRESSOR OVERHAUL 1D Ð 17
19. Install shim(s).
20. Install drive plate.
·Install the drive plate to the compressor drive
shaft together with the original shim(s)(1) press
the drive plate by hand.

Page 274 of 3573

ISUZU TROOPER 1998 Service Repair Manual 1D Ð 18 COMPRESSOR OVERHAUL
HD6 TYPE COMPRESSOR
Metric Thread Size Information
Compressor to mounting bracket bolts (Front)
M10´ 1.5 Ð 6H
Compressor to mounting bracket bolts (Rear)
M8´ 1.25 Ð 6H

1D Ð 18 COMPRESSOR OVERHAUL
HD6 TYPE COMPRESSOR
Metric Thread Size Information
Compressor to mounting bracket bolts (Front)
M10´ 1.5 Ð 6H
Compressor to mounting bracket bolts (Rear)
M8´ 1.25 Ð 6H
Suction-discharge port screw
M10´ 1.5 Ð 6HCompressor shaft
M9´ 1.25 Ð 6H
Internal hub-clutch drive assembly
M22´ 1.5 Ð 6H
COMPRESSOR CLUTCH PLATE AND HUB
ASSEMBLY
Removal
1. Clamp the holding fixture J-33026 in a vise and
attach compressor to holding fixture with thumb
screws J-33026-1.
2. With center screw forcing tip in place to thrust
against the end of the shaft, thread the Clutch Plate
and Hub Assembly Installer-Remover J-33013-B into
the hub. Hold the body of the remover with a wrench
and turn the center screw into the remover body to
remove the clutch plate and hub assembly (1).
CAUTION: Do not drive or pound on the clutch hub
or shaft. Internal damage to compressor may
result. The forcing tip on J-33013-B remover-
installer center screw must be flat or the end of the
shaft/axial plate assembly will be damaged.
3. Remove the shaft key and retain for reassembly.
Installation
1. Install the shaft key into the hub key groove. Allow
the key to project approximately 3.2 mm (1/8 in) out
of the keyway. The shaft key is curved slightly to
provide an interference fit in the hub key groove.2. Be sure the frictional surface of the clutch plate and
the clutch rotor (2) are clean before installing the
clutch plate and hub assembly (1).
3. Align the shaft key (4) with the shaft keyway (3) and
place the clutch plate and the hub assembly onto
the compressor shaft.
4. Remove the forcing tip on J-33013-B clutch plate
and hub assembly installer-remover center screw
and reverse the body direction on the center screw,
as shown in Figure.
5. Install the clutch plate and hub installer-remover J-
33013-B with bearing as shown in Figure.
The body of the J-33013-B installer-remover should
be backed off sufficiently to allow the center screw to
be threaded onto the end of the compressor shaft.
6. Hold the center screw with a wrench. Tighten the
hex portion of the installer-remover J-33013-B body
to press the hub onto the shaft. Tighten the body
several turns, remove the installer and check to see
that the shaft key is still in place in the keyway
before installing the clutch plate and hub
assembly to its finial position.The air gap (2)
between frictional surfaces of the clutch plate and
clutch rotor should be 0.50Ð0.76 mm (.020Ð.030 in).
1
J-33013-B
J-33026-1
J-33026
901RW001
4
31
2
871RW003

Page 275 of 3573

ISUZU TROOPER 1998 Service Repair Manual COMPRESSOR OVERHAUL 1D Ð 19
CAUTION: If the center screw is threaded fully onto
the end of the compressor shaft. or if the body of
the installer is held and the center screw is rotated,
the key will

Page 276 of 3573

ISUZU TROOPER 1998 Service Repair Manual 1D Ð 20 COMPRESSOR OVERHAUL
3. Position puller crossbar J-8433-1 on the puller pilot
J-33023-A and assemble the two J-33026 through
bolts and washers through the puller bar slots and
thread them into

Page 277 of 3573

ISUZU TROOPER 1998 Service Repair Manual COMPRESSOR OVERHAUL 1D Ð 21
Installation
1. Place the clutch coil assembly (1) on the front head
with the terminals positioned at the "marked" location.
2. Place the J-33024 clutch coil installer ov

Page 278 of 3573

ISUZU TROOPER 1998 Service Repair Manual 1D Ð 22 COMPRESSOR OVERHAUL
COMPRESSOR SHAFT SEAL
Service Precaution
When replacing the shaft seal assembly, pressure relief
valve or control switches, it will be necessary to recover
the refrigerant

1D Ð 22 COMPRESSOR OVERHAUL
COMPRESSOR SHAFT SEAL
Service Precaution
When replacing the shaft seal assembly, pressure relief
valve or control switches, it will be necessary to recover
the refrigerant. Other than clutch repair procedures, the
same holds true for any disassembly of the compressor.
A clean workbench covered with a sheet of clean
paper, and a place (clean trays, etc) for all parts being
removed and replaced is important, as is the use of
proper clean service tools.
CAUTION: Any attempt to use makeshift or
inadequate service tools or equipment may result
in damage and/or improper compressor operation.
All parts required for servicing the internal compressor
are protected by a preservative process and packaged
in a manner which will eliminate the necessity of
cleaning, washing or flushing of the parts. The parts
can be used in the internal assembly just as they are
removed from the service package. Seals and
protective packaging should be left intact until just
prior to installation.
If the compressor rear head, front head or cylinder and
shaft assembly is to be serviced or replaced, the oil in
the compressor must be drained, measured, recorded
and replaced.
Legend
(1) Suction Port
(2) Discharge Port
(3) Mounting Boss
(4) Mounting Boss
(5) Pressure Relief Valve
(6) Mounting Boss
Seal Leak Detection
A shaft seal should not be changed because of small
amounts of oil found on an adjacent surface but only
after actual refrigerant leakage is found using an
approved leak detector.
CAUTION: Handling and care of seal protector is
important. If seal protector is nicked or the bottom
flared, the new seal may be damaged during
installation.
Removal
1. Recover the refrigerant using Refrigerant Recovery
System.
2. Loosen and reposition compressor in mounting
brackets, if necessary.
3. Remove clutch plate and hub assembly from
compressor as described previously.
4. Remove the shaft seal retainer ring, using snap ring
pliers.
5. Thoroughly clean inside of compressor neck area
surrounding the shaft, the exposed portion of the
seal, the retainer ring groove and the shaft itself.
Any dirt or foreign material getting into compressor
may cause damage.
6. Fully engage the knurled tangs of Seal Remover-
Installer J-23128-A into the recessed portion of the
Seal (1) by turning the handle clockwise. Remove
the Seal from the compressor with a rotary-pulling
motion.
Discard the seal. The handle must be hand-
tightened securely. Do not use a wrench or pliers.
1
2
3
456
871RW006
J-23128-A1
901RW008

Page 279 of 3573

ISUZU TROOPER 1998 Service Repair Manual COMPRESSOR OVERHAUL 1D Ð 23
7. Remove and discard the seal seat O-ring (2) from the
compressor neck using O-ring remover J-9553-01.
8. Recheck the shaft and inside of the compressor
neck for dirt or

COMPRESSOR OVERHAUL 1D Ð 23
7. Remove and discard the seal seat O-ring (2) from the
compressor neck using O-ring remover J-9553-01.
8. Recheck the shaft and inside of the compressor
neck for dirt or foreign material and be sure these
areas are perfectly clean before installing new parts.
Cleaning
Thoroughly clean O-ring seal groove in front head.
CAUTION: Seals should not be re-used. Always use
a new specification service seal on rebuild. Be sure
that the seal to be installed is not scratched or
damaged in anyway. Make sure that the seal seat
and seal are free of lint and dirt that could damage
the seal surface or prevent sealing.
Installation
1. Dip the new seal seat O-ring (1) in clean 525
viscosity refrigerant oil and assemble onto O-ring
installer J-33011.2. Insert the O-ring installer J-33011 into the
compressor neck until the installer "bottoms". Lower
the moveable slide of the O-ring installer to release
the O-ring into the seal O-ring lower groove (The
compressor neck top groove is for the shaft seal
retainer ring.) Rotate the installer to seat the O-ring
and remove the installer.
3. Dip the new seal in clean 525 viscosity refrigerant oil
and assemble seal to Seal Installer J-23128-A, by
turning handle clockwise. The stamped steel case
side of the lip seal must be engaged with knurled
tangs of installer so that flared-out side of lip seal is
facing and installed towards the compressor. Install
seal protector J-34614, in the seal lip and place over
the compressor shaft, and push the seal in place with
a rotary motion or place the seal protector J-34614
over end of compressor shaft, and slide the new seal
onto the shaft with a rotary motion until it stops. Take
care not to dislodge the O-ring. Be sure the seal (2)
makes good contact with the O-ring. Disengage the
installer from the seal and remove the installer
J-23128-A and the seal protector J-34614.
CAUTION: Handling and care of seal protector is
important. If seal protector is nicked or the bottom
flared, the new seal may be damaged during
installation.
4. Install the new seal retainer ring with its flat side
against the Seal, using Snap-Ring Pliers. Use the
sleeve from O-ring installer J-33011 to press in on
the seal retainer ring so that it snaps into its groove.
5. To leak test, install compressor leak test fixture
J-39893 on rear head of compressor and connect
gage charging lines and Refrigerant Recovery
System. Pressurize suction and high-side of
compressor with R-134a Refrigerant. Temporarily
install (M9 ´1.25 thread on shaft) nut and, with the
compressor in horizontal position, rotate the
compressor shaft in normal direction of rotation
several times by hand. Leak test the seal area and
correct and leak found. Recover the refrigerant.
Remove shaft nut.
2 J-9553-01
901RW009
1
J-33011
901RW010
J-34614
2
J-23128-A
901RW011

Page 280 of 3573

ISUZU TROOPER 1998 Service Repair Manual 1D Ð 24 COMPRESSOR OVERHAUL
6. Remove any excess oil resulting from installing the
new seal parts from the shaft and inside the
compressor neck.
7. Install the clutch plate and hub assembly as
descri

1D Ð 24 COMPRESSOR OVERHAUL
6. Remove any excess oil resulting from installing the
new seal parts from the shaft and inside the
compressor neck.
7. Install the clutch plate and hub assembly as
described previously.8. Reinstall compressor belt and tighten bracket.
9. Evacuate and charge the refrigerant system.
COMPRESSOR PRESSURE RELIEF VALVE
Removal
1. Recover the refrigerant using Refrigerant Recovery
System.
2. Remove old pressure relief valve.
Installation
1. Clean valve seat area on rear head.2. Lubricate O-ring of new pressure relief valve and
O-ring assembly with new 525 viscosity refrigerant
oil. Install new valve and torque in place, 9.0 Nám
(6.1 ft lbs)
3. Evacuate and recharge the system.
4. Leak test system.
COMPRESSOR OIL
Compressor Oil Check
The oil used to lubricate the compressor is circulating
with the refrigerant.
Whenever replacing any component of the system or a
large amount of gas leakage occurs, add oil to maintain
the original amount of oil.
Checking and Adjusting Oil Quantity for
Used Compressor
1. Perform oil return operation. Refer to Oil Return
Operation in this section.
2. Discharge and recover refrigerant and remove the
compressor.
3. Drain the compressor oil and measure the extracted
oil with a measuring cylinder.
4. If the amount of oil drained is much less than 90 cc
(3.0 fl. oz.), some refrigerant may have leaked out.
Conduct a leak tests on the connections of each
system, and if necessary, repair or replace faulty
parts.
5. Check the compressor oil contamination. (Refer to
Contamination of Compressor Oil in this section.)
6. Adjust the oil level following the next procedure
below.7. Install the compressor, then evacuate, charge and
perform the oil return operation.
8. Check system operation.
When it is impossible to preform oil return
operation, the compressor oil should be checked in
the following order:
1. Discharge and recover refrigerant and remove the
compressor.
2. Drain the compressor oil and measure the extracted
oil with a measuring cylinder.
3. Check the oil for contamination.
4. If more than 90 cc (3.0 fl. oz.) of oil is extracted from
the compressor, supply the same amount of oil to
the compressor to be installed. If the amount of oil
extracted is less than 90 cc (3.0 fl. oz.), recheck the
compressor oil in the following order:
5. Supply 90 cc (3.0 fl. oz.) of oil to the compressor
and install it onto the vehicle.
6. Evacuate and recharge with the proper amount of
refrigerant.
7. Perform the oil return operation.
8. Remove the compressor and recheck the amount of
oil.
9. Adjust the compressor oil, if necessary.
Checking and Adjusting for Compressor
Replacement
The oil is not charged in compressor (service parts). So
it is necessary to charge the proper amount of oil to the
new compressor. (Oil Capacity)
Capacity total in system 150 cc (5.0 fl.oz)
Compressor (Service 150 cc (5.0 fl.oz)
parts) charging amount
(Collected Amount) (Charging Amount)
more than 90 cc same as collected
(3.0 fl.oz) amount
less than 90 cc (3.0 fl.oz) 90 cc (3.0 fl.oz)
(Collected Amount) (Charging Amount)
more than 90 cc same as collected
(3.0 fl.oz) amount
less than 90 cc (3.0 fl.oz) 90 cc (3.0 fl.oz)

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