1998 ISUZU TROOPER clutch

7A±58
AUTOMATIC TRANSMISSION (4L30±E)
Oil Pump
Disassembled View
241RS014
Legend
(1) Oil Pump Drive Gear
(2) Oil Pump Driven Gear
(3) Pin
(4) Plug
(5) Spring
(6) Converter Clutch Control Valve
(7) Snap Ring
(8) Spring Seat
(9) Spring(10) Throttle Signal Accumulator Piston
(11) Sleeve Pin
(12) Sleeve
(13) Boost Valve
(14) Spring Seat
(15) Valve Spring
(16) Spring Seat
(17) Pressure Regulator valve
(18) Oil Pump Assembly
Disassembly
1. Remove oil pump drive gear (1) and driven gear (2).
2. Remove pin (3) from oil pump assembly (18).
3. Remove plug (4), spring (5), and converter clutch
control valve (6).
4. Remove snap ring (7) from oil pump assembly (18).
5. Remove spring seat (8), spring (9), and throttle signal
accumulator piston (10).
6. Remove sleeve pin (11) from oil pump assembly (18).
7. Remove sleeve (12), boost valve (13), spring seat
(14), valve spring (15), spring seat (16), and pressure
regulator valve (17).
Inspection And Repair
Visual Check:
If any damage, deformation or wear is found, replace the
damaged part.
Reassembly
1. Lubricate and preinstall pressure regulator spring
seat (16) on valve (17), with the flat side against
shoulder.
2. Install pressure regulator valve (17) and spring seat
(16) assembly, valve spring (15), and spring seat (14)
with the flat side away from spring to oil pump
assembly (18).
3. Assemble boost valve (13) into sleeve (12).
4. Install boost valve and sleeve assembly, and sleeve
pin (11) to oil pump assembly (18).
5. Install throttle signal accumulator piston (10), spring
(9), and spring seat (8), with the flat side away from
the spring, and snap ring (7) to oil pump assembly
(18).
6. Install converter clutch control valve (6), spring (5),
plug (4), and pin (3) to oil pump assembly (18).
7. Install oil pump driven gear (2) and drive gear (1).

7A±61 AUTOMATIC TRANSMISSION (4L30±E)
Adapter Case Valve Body
Disassembled View
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Legend
(1) Converter Clutch Solenoid Assembly
(2) Retainer
(3) Force Motor Solenoid
(4) Retainer
(5) Plug
(6) 3/4 Accumulator Valve
(7) 3/4 Accumulator Control Valve(8) Spring
(9) Retaining Ring
(10) Feed Limit Valve
(11) Plug Retainer
(12) O±Ring
(13) Plug
(14) Force Motor Screen Assembly
(15) Adapter Case Valve Body
Disassembly
1. Remove 11mm bolt from valve body.

Remove converter control solenoid assembly (1).
2. Remove 11mm bolt and retainer (2) from valve body.

Remove force motor solenoid (3).
3. Remove retainer (4), plug (5), 3/4 accumulator valve
(6), and 3/4 accumulator control valve (7).
4. Remove spring (8), retaining ring (9), and feed limit
valve (10).
5. Remove plug retainer (11), O±ring (12), plug (13), and
force motor screen assembly (14).

Use 5 mm bolt to pull plug.
Inspection And Repair
Inspect for the following, and replace any damaged or
worn parts:
1. Damage or wear to each valve.
2. Damage in oil passeges.
3. Cracks or damage to valve body.
4. Valve operations.
5. Spring fatigue.
Reassembly
1. Install force motor screen assembly (14), plug (13),
O±ring (12), and plug retainer (11).
2. Install feed limit valve (10), retaining ring (9), and
spring (8).

7A±62
AUTOMATIC TRANSMISSION (4L30±E)
3. Install 3/4 accumulator control valve (7), 3/4
accumulator valve (6), plug (5), and retainer (4).
4. Install force motor solenoid (3).

Place solenoid terminals pointing towards mating
face.

Install retainer (2) and bolt.
Torque: 10 Nwm (1.0 kg´m/87 lb in)
5. Install converter clutch solenoid assembly with two
O±rings (1) to valve body.

Install bolt.
Torque: 10 Nwm (1.0 kg´m/87 lb in)

7A±63 AUTOMATIC TRANSMISSION (4L30±E)
Third Clutch And Sprag Unit
Disassembled View
248RW001
Legend
(1) Retaining Ring
(2) Input Sun Gear and Sprag Unit Assembly
(3) Retaining Washer
(4) Bearing(5) Thrust Washer
(6) Clutch Plates
(7) Third Clutch Spring Cushion Plate
(8) Third Clutch Drum Assembly
Disassembly
1. Place the third clutch drum and intermediate shaft
assembly upright, using the overdrive internal gear as
a support.
2. Locate the ends of the retaining ring. Depress one
end of the ring using a small screwdriver instead of
the depressor handle provided with the tool
5-8840-2258-0 (J-38450-A). Slide one blade down
between the third clutch drum and the retaining ring.
3. Remove a screwdriver and repeat this step for the
other end of retaining ring.
4. Install the remaining four blades approximately (five)
notches apart using a screwdriver to depress the
retaining ring.
5. Pull up on input sun gear and sprag unit assembly (1
and 2) to release the retaining ring from third clutch
drum assembly (8).
6. Remove the tool blades.
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7. Remove retaining washer (3), bearing (4), thrust
washer (5), and clutch plates (6 and 7) form the third
clutch drum assembly (8).

7A±64
AUTOMATIC TRANSMISSION (4L30±E)
Inspection And Repair
Visual Check:
If any damage, deformation or wear is found, replace the
damaged part.
Reassembly
1. Place third clutch drum and intermediate shaft
assembly upright, using the overdrive internal gear as
a support.
2. Install third clutch spring cushion plate (7), bevel face
down.
3. Install third clutch plates (6) into third clutch drum
assembly (8). Start with the steel clutch plate and
alternate with lined plates.
4. Install thrust washer (5), bearing (4), and retaining
washer (3).
5. Fully engage the hub splines of the input sun gear and
sprag unit assembly (2) into the third clutch inner
tangs.

Simultaneously rotate the outer sprag race to
engage into the third clutch drum assembly (8).
6. Place 5-8840-2258-0 (J-38450-A) blades between
the retaining ring and the third clutch drum
approximately (five) notches apart, and one blade at
each end of the retaining ring (1). Push down on sprag
assembly until the assembly is seated into the third
clutch drum assembly (8).
7. Remove the tool blades and engage retaining ring
into groove of third clutch drum.
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7A±65 AUTOMATIC TRANSMISSION (4L30±E)
Third Clutch
Disassembled View
248RS006
Legend
(1) Retaining Ring
(2) Spring Seat(3) Springs
(4) Piston Assembly
(5) Third Clutch Drum
Disassemble
1. Compress spring seat using the 5±8840±0501±0
(J±23075) spring compressor and 5±8840±2259±0
(J±23075±12) adapter tool.
NOTE: Do not over±stress the springs and seat. This will
cause damage to the spring seat.

Remove the tool.

Remove retaining ring (1).
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2. Release the spring seat (2).
NOTE: Do not let the spring seat catch in the ring groove.

Remove spring seat (2) and springs (3).
3. Remove piston assembly (4) from third clutch drum
(5).
Inspection And Repair
Visual check:
If any damage, deformation or wear is found, replace the
damaged part.
Operation check:
Shake the piston and listen for check ball movement
indicates proper check ball operation. Replace the piston
if the check ball is missing or falls out.
Reassembly
1. The lip of the piston seal must point toward the front of
the transmission. Lubricate the seal lip with
transmission fluid.

Install piston assembly (4) into the third clutch drum
(5). Use the 5±8840±2260±0 (J±23084) third clutch
piston installer to protect the outer seal during
installation.

Remove the seal installer.

7A±67 AUTOMATIC TRANSMISSION (4L30±E)
Sprag Unit
Disassembled View
248RS009
Legend
(1) Retaining Ring
(2) Sprag Outer Race
(3) Ring(4) Sprag Assembly
(5) Ring
(6) Third Clutch Hub and Sun Gear Assembly
Disassembly
1. Remove the sprag outer race, retaining ring, and
sprag assembly from the third clutch hub and sun
gear assembly.
2. Remove the rings and sprag assembly from the sprag
outer race.
Inspection And Repair
Visual Check:
If any damage, deformation or wear is found, replace the
damaged part.
Reassembly
NOTE: Flared shoulder of the sprag cage faces the sun
gear. This procedure must be followed exactly to be sure
that the sprag assembly is installed properly.
1. Install rings and sprag assembly onto the third clutch
hub and sun gear.
2. Install sprag outer race and retaining ring assembly
over the sprag cage assembly.

Place third clutch hub and sun gear assembly on a
flat surface, sun gear facing up. Place sprag outer
race and sprag assembly over the sun gear
assembly, push down and turn the input sun
counterclockwise at the same time. NOTE: Check correct rotation by holding the sun gear in
your left hand and turning the outer race. The outer sprag
race should turn freely towards you and should lock
turning away from you.
248RS010

7A±68
AUTOMATIC TRANSMISSION (4L30±E)
Second Clutch
Disassembled View
247RW001
Legend
(1) Retaining Ring
(2) Ring Gear
(3) Retaining Ring
(4) Spacer
(5) Clutch Plates(6) Waved Washer
(7) Retaining Ring
(8) Spring Seat
(9) Springs
(10) Piston Assembly
(11) Second Clutch Drum
Disassembly
1. Remove retaining ring (1) from second clutch drum
(11).
2. Remove ring gear (2), retaining ring (3), and spacer
(4).
3. Remove clutch plates (5) and waved washer (6).
4. Remove retaining ring (7) using 5±8840±0195±0
(J±23327) compressor to compress the spring seat
(8).
5. Remove spring seat (8), springs (9) and piston
assembly (10) from second clutch drum (11).
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