Isuzu Trooper (2000 year). Service manual — part 385
7A–60
AUTOMATIC TRANSMISSION (4L30–E)
9. Remove spring seat (19), spring (20) and throttle
signal accumulator piston (21).
10. Remove sleeve pin (22) from oil pump assembly (29).
11. Remove boost valve sleeve (23), boost valve (24),
spring seat (25), valve spring (26), spring seat (27),
and pressure regulator valve (28).
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 (27) on valve (28), with the flat side against
shoulder.
2. Install pressure regulator valve (28) and spring seat
(27) assembly, valve spring (26), and spring seat (25)
with the flat side away from spring to oil pump
assembly (29).
3. Assemble boost valve (24) into sleeve (23).
4. Install boost valve and sleeve assembly, and sleeve
pin (22) to oil pump assembly (29).
5. Install throttle signal accumulator piston (21), spring
(20), and spring seat (19), with the flat side away from
the spring, and snap ring (18) to oil pump assembly
(29).
6. Install enable valve (17), spring guide (15), enable
valve spring (16) and retainer pin (14) to oil pump
assembly (29).
7. Assemble torque converter regulator spring (10) and
torque converter regulator valve (11) into sleeve (9).
8. Install isolator valve (13), isolator valve spring (12)
and the torque converter regulator sleeve and valve
assembly into the oil pump assembly (29).
9. Install torque converter clutch control valve spring (7),
torque converter clutch control valve (6), plug (4) and
seal ring (5), and retainer pin (3) to oil pump assembly
(29).
10. Install oil pump driven gear (2) and drive gear (1).
7A–61
AUTOMATIC TRANSMISSION (4L30–E)
Main Case Valve Body
Disassembled View
244RS010
Legend
(1) Gaskets and Transfer Plate
(2) Manual Valve
(3) Band Control Solenoid
(4) Pin
(5) Waved Washer
(6) Spring Pin
(7) Solenoid A
(8) Retainer
(9) 1–2/3–4 Shift Valve
(10) Spring
(11) Spring Pin
(12) Solenoid B
(13) Retainer
(14) 2–3 Shift Valve
(15) Spring
(16) Spring Pin
(17) Plug
(18) Spring
(19) Low Pressure Control Valve
(20) Spring Pin
(21) Plug
(22) Band Control Screen Assembly
(23) Spring Pin
(24) Plug
(25) 1–2 Accumulator Valve
(26) 1–2 Accumulator Control Valve
(27) Check Ball
(28) Main Case Valve Body
Disassembly
1. Remove two 11mm bolts from valve body (28), then
remove gaskets and transfer plate (1).
2. Remove manual valve (2).
3. Push in band control solenoid (3) to compress waved
washer (5), and remove pin (4).
4. Remove band control solenoid (3) and waved washer
(5).
5. Remove spring pin (6) with a 3 mm dia punch.
6. Remove solenoid A (7) by grasping the metal tip. Do
not grasp the connector housing.
7. Remove retainer (8), 1–2/3–4 shift valve (9), and
spring (10).
8. Remove spring pin (11) with a 3 mm dia punch.
9. Remove solenoid B (12) by grasping the metal tip. Do
not grasp the connector housing.
7A–62
AUTOMATIC TRANSMISSION (4L30–E)
10. Remove retainer (13), 2–3 shift valve (14), and spring
(15).
11. Remove spring pin (16), plug (17), spring (18), and
low pressure control valve (19).
12. Remove spring pin (20), plug (21), and band control
screen assembly (22).
13. Remove spring pin (23), plug (24), 1–2 accumulator
valve (25), and 1–2 accumulator control valve (26).
14. Remove check ball (27) from valve body (28).
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 1–2 accumulator control valve (26), 1–2
accumulator valve (25), plug (24), and spring pin (23).
2. Install band control screen assembly (22), plug (21),
and spring pin (20).
3. Install low pressure control valve (19), spring (18),
plug (17), and spring pin (16).
4. Install spring (15), 2–3 shift valve (14), retainer (13),
solenoid B (12), and spring pin (11).
5. Install spring (10), 1–2/3–4 shift valve (9), retainer (8),
solenoid A (7), and spring pin (6).
6. Install waved washer (5), band control solenoid (3),
and pin (4).
7. Install manual valve (2).
8. Install check ball (27) to valve body (28).
9. Install gasket (valve body/transfer plate) and transfer
plate using two J–3387–2 guide pins.
D
Install two 11mm bolts.
Torque: 13 N
•
m (113 lb in)
244RS004
D
Install gasket (transfer plate/main case).
7A–63
AUTOMATIC TRANSMISSION (4L30–E)
Adapter Case Valve Body
Disassembled View
243RY001
Legend
(1) Bracket
(2) Converter Clutch PWM Solenoid
(3) Retainer
(4) Force Motor Solenoid
(5) Retainer
(6) Plug
(7) 3/4 Accumulator Valve
(8) 3/4 Accumulator Control Valve
(9) Spring
(10) Retaining Ring
(11) Feed Limit Valve
(12) Plug Retainer
(13) O–Ring
(14) Plug
(15) Force Motor Screen Assembly
(16) Adapter Case Valve Body
Disassembly
1. Remove 11mm bolt from valve body.
D
Remove bracket (1) and converter clutch PWM
solenoid (2).
2. Remove 11mm bolt and retainer (3) from valve body.
D
Remove force motor solenoid (4).
3. Remove retainer (5), plug (6), 3/4 accumulator valve
(7), and 3/4 accumulator control valve (8).
4. Remove spring (9), retaining ring (10), and feed limit
valve (11).
5. Remove plug retainer (12), O–ring (13), plug (14),
and force motor screen assembly (15).
D
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 (15), plug (14),
O–ring (13), and plug retainer (12).
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