transmission ISUZU TROOPER 1995 Workshop Manual

7A-186 AUTOMATIC TRANSMISSION (4L30-E)
~-4. Oil filler tube
.. tV ~
v -I
6. Adapter case.....L---1>( valve body
Fig. 7A-59
3. Mode switch
and
transmission
harness
11 . Servo cover

12. Main case valve body (fig. 7A-59)
• Install two check balls (Fig. 7A-60).
• Inspect electrical
connector and seal, replace
if necessary.
• Install electrical 4 pin connector/main case
and
wiring harness.
1®..1 • Install two guide pins into main case.
Guide pin:
J-25025-B
• Install valve
body complete assembly and
manual valve link.
W NOTE:
Valve must be extended as the short end of
manual valve link is connected to the range
selector lever. Long end of link goes into valve.
Fig. 7A-60
• Install
seven 13 mm screws.
~~~ Torque N·mOb·ft) I 20 (15)
• Remove two guide pins.
11.
Servo cover (fig. 7 A-59)
Check ball
• Install servo cover gasket, cover and four 13
mm screws.
~~~ Torque N·mOb·ft) I 25 ( 18)
10. Wiring harness (fig. 7A-59)
• Connect harness to band control and shift
solenoids.
9. Manual detent (fig. 7 A-59)
• Install roller and spring assembly with clip.
Install two 13 mm screws.
~~~ Torque N·mOb·ft) 20 (15)
AUTOMATIC TRANSMISSION (4L30-E) 7A-187
8. Oil filter (Fig. 7 A-59)
• Install oil filter, three 13 mm screws.
~~~ Torque N.m(lb·ft) I 20 (15)
7. Main
case oil pan (Fig. 7 A- 59)
• Install oil pan gasket, magnet, oil pan,
sixteen
10 mm screws.
~~~ Torque N·m(lb·in) I 11 (96)
6. Adapter case valve body (fig. 7 A-59)
• Inspect electrical connector and seal.
Replace
if necessary.
Install electrical five pin connector and
harness
assembly in bottom of adapter
case.
Install gasket, transfer plate, gasket.
• Install adapter case valve body complete
and seven 13 mm screws.
~~~ Torque N.m(lb.ft) I 20 (15)
5. Wiring harness (fig. 7A-59)
• Connect harness assembly to converter
clutch solenoid, and force motor.
4. Adapter case oil pan (fig. 7 A-59)
• Install oil pan gasket, oil pan, twelve 10 mm
screws.
~~~ Torque N·mOb·in) 11 (96)
• Rotate transmission, with bottom pan
facing
down.
• Install seal ring, oil filler tube, 10 mm screw.
~~~ Torque N·mOb·in) I 13 (113)
3. Mode switch and transmission harness
(Fig. 7A-61).
• Install transmission harness.
• Install mode switch, shield and two 10 mm
screws.
• Adjust using setting tool.
Refer to "MODE SWITCH" in this section.
~~~ Torque
Selector shaft nut
10 mm screw
N·mOb·ft)
23 (17)
13 (113 lb·in)

7A-188 AUTOMATIC TRANSMISSION (4L30-E)
Fig. 7A-61
2. 0-ring (fig. 7 A-59)
• Install 0-ring on turbine shaft.
1. Torque converter
(fig. 7A-59)
The converter assembly
must be replaced under
any
of the following conditions:
a. Evidence of damage to the pump assembly
b. Metal particles are found after flushing
the
cooler lines
c. External leaks in hub weld area
d. Converter Pilot broken, damaged
or poor fit
into crankshaft
e. Converter hub scored or damaged
f.
Internal failure in stator
g. Contamination
from engine coolant
h. Excess end play.
• Install converter assembly.
Rotate transmission,
bell housing up. Spin
converter
to insure proper fit.
• Fill transmission through the oil filler tube, using
DEXRQN®-111 Automatic transmission fluid.

AUTOMATIC TRANSMISSION (4L30·E) 7A-189
CONVERTER HOUSING AND OIL PUMP ASSEMBL V
1
Disassembly steps
1. Converter housing
2. Outer seal ring
3. Gasket
4. Wear
plate
5. Oil pump assembly
6. Oil seal ring
Reassembly steps
To reassemble, follow
the disassembly steps in the reverse order.
Fig. 7A-62
l•!•l DISASSEMBLY
1. Converter housing
• Remove five bolts from converter housing.
2. Outer seal ring
3. Gasket
4. Wear plate
5. Oil pump assembly
6. Oil seal ring
[1!) INSPECTION AND REPAIR
Visual check
• If any damage, deformation or local wear is found
in a converter housing, outer
seal ring, wear plate
or oil seal ring, replace it.
l•!•l REASSEMBLY
6. Oil seal ring
• Install oil seal ring using installer.
1~1 Torque N·m (lb·in)
5. Oil pump assembly
4. Wear plate
3 (26)
• Install wear plate onto oil pump assembly.
3. Gasket
2. Outer seal ring
"-"' 1. Converter housing (Fig. 7A-63)
li0\1 • Install converter housing onto complete oil
~ pump assembly. Align with two short guide
pins on outer
bolt holes. •
Loosely install
five 13mm bolts.
•
Center converter housing using centering tool.
•
Tighten five inner 13mm bolts in an alternating
pattern.
I~I ___ T_o_rq~u_e __ N_·_m_(_lb_·ft_)~l _____ 2_0_(_15_) ____ _
Guide pin: J-38588
Centering
tool: J-38557
J-38557
Fig. 7A-63

7A-190 AUTOMATIC TRANSMISSION (4L30-E)
OIL PUMP
Disassembly steps 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
Reassembly steps
To reassemble, follow the disassembly steps in the
reverse order.
Fig. 7A-64
1+!•1 DISASSEMBLY
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
ll..•ltNSPECTION AND REPAIR
Visual check
• If any damage, deformation or local wear is
found in a snap ring, spring, spring retainer
valve,
gear or oil pump, replace it.
l•!•l REASSEMBLY
17. Pressure regulator valve
16. Spring seat
0 • Lubricate and preinstall pressure
L::::J spring seat on valve, with the
1 .. 1 against shoulder.
15. Valve spring
14. Spring seat
13.
Boost valve
12. Sleeve
11. Sleeve pin
10. Throttle signal accumulator piston
9. Spring
8. Spring seat
regulator
flat side
r=1 • Install throttle signal accumulator piston,
t.=..l spring, and spring seat, with the flat side
away from the spring and snap ring.
7. Snap ring
6. Converter clutch control valve
5. Spring
4. Plug
3. Pin
2. Oil pump driven gear
1. Oil pump drive gear

~
AUTOMATIC TRANSMISSION (4L30-E) 7A-191
MAIN CASE VALVE BODY
1·:-1
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
23
8 25 i 24
26
r t 1
~kY~ 3
"· u 21 20
/:: 14 4 11
~ 2
16
Fig. 7A-65
DISASSEMBLY 16. Spring pin
Gaskets
and transfer plate 17. Plug
Disassembly steps
1. Gaskets and transfer plate 2. Manual valve
3. Band control solenoid 4. Pin 5. Waved washer
6. Spring pin 7. 1-2/3-4 solenoid
8. Retainer 9. 1-2/3-4 shift valve 10. Spring
11. Spring pin 12. 2-3 solenoid
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 assem-bly
23. Spring pin 24. Plug
25. 1-2 accumulator valve 26. 1-2 accumulator control valve
27. Check ball
Reassembly
steps
To reassemble,
follow the dis­
assembly steps in the reverse
order.
• Remove two 11 mm bolts from valve body. 18. Spring
Manual valve 19. Low pressure control valve
Band control solenoid 20. Spring pin
Pin 21.
Plug
Waved washer 22.
Band control screen assembly
Spring pin 23. Spring pin
1-2/3-4 solenoid 24. Plug
•
Remove solenoids by grasping the metal tip. 25.
1-2 accumulator valve
Do not grasp the connector housing.
26. 1-2 accumulator control valve
Retainer 27. Check ball
1-2/3-4 shift valve • Remove 1 check ball from valve body.
Spring IL•I INSPECTION AND REPAIR Spring pin
2-3 solenoid Inspect for the following and replace any damaged or
• Remove solenoids by grasping the metal tip. worn parts:
Do
not grasp the connector housing. • Damage or wear to each valve.
Retainer • Damage in oil passages .
2-3
shift valve • Cracks or damage to valve body .
• Valve operations . Spring • Spring fatigue .

7A 192 AUTOMATIC TRANSMISSION (4L30-E)
l•!•l REASSEMBL V
27. Check ball
• Install
1 check ball to valve body
26. 1-2
accumulator control valve
25. 1-2 accumulator valve
24. Plug
23. Spring pin
22. Band
control screen assembly
21. Plug
20.
Spring pin
19.
Low pressure control valve
18. Spring
17. Plug
16. Spring pin
15.
Spring
14. 2-3 shift valve
13.
Retainer
12. 2-3
solenoid
11. Spring pin
10. Spring
9. 1-2/3-4 shift valve
8. Retainer
7. 1-2/3-4 solenoid
6. Spring pin
5. Waved washer
4. Pin
3. Band control solenoid
2. Manual valve
1. Gaskets and transfer plate
li5\l • Install gasket (valve body/transfer plate) and
~ transfer plate, using two guide pins (Fig. 7A-
66).
• Install two 11 mm bolts.
1~1 Torque N·m (lb·in) j 13 (113)
• Install gasket (transfer plate/main case).
Guide pins :
J-3387-2
Fig. 7A-66

ADAPTER CASE VALVE BODY
AUTOMATIC TRANSMISSION (4L30-E) 7A-193
1
Disassembly steps
1. Converter clutch sole-
noid
2. Retainer
3. Force motor solenoid
4. Spring pin
5. Plug
6. 3/4 accumulator valve
7. 3/4 accumulator control
valve
·
8. Spring pin
9. Spring
10. Retaining ring
11. Feed limit valve
12. Spring pin
13. 0-ring
14. Plug
15. Force motor screen
assembly
Reassembly
steps
To
reassemble, follow the
disassembly steps in the
reverse order.
Fig. 7A-67
l.,!,.l DISASSEMBL V
1. Converter clutch solenoid
• Remove 11 mm bolt from valve body.
• Remove converter control solenoid assembly
with two 0-ring.
2. Retainer
• Remove 11 mm bolt and retainer from valve
body.
3. Force motor solenoid
4. Spring pin
5. Plug
6. 3/4 accumulator valve
7. 3/4 accumulator control valve
8. Spring pin
9.
Spring
10. Retaining ring
11. Feed
limit valve
12. Spring pin
13. 0-ring
14. Plug
15. Force motor screen assembly
• Use 5mm bolt to pull plug.
(L!] INSPECTION AND REPAIR
Inspect for the following and replace any damaged or
worn parts:
• Damage or wear to each valve.
•
Damage in oil passages.
• Cracks or damage to valve body.
• Valve operations.
• Spring fatigue

7A-194 AUTOMATIC TRANSMISSION (4L30-E)
f•!•l REASSEMBLY
15. Force motor screen assembly
14. Plug
13. 0-ring
12. Spring pin
11. Feed
limit valve
10. Retaining ring
9. Spring
8. Spring pin
7. 3/4 accumulator control valve
6. 3/4 accumulator valve
5. Plug
4. Spring pin
3. Force motor solenoid
2. Retainer
r=1 • Plac_e solenoid terminals pointing towards
1=.1 matmg face.
• Install retainer and bolt.
~~~ Torque N·m (lb·in) I 10 (87)
1. Converter clutch solenoid
• Install converter clutch solenoid assembly with
two 0-rings to valve body.
• Install bolt.
~~~ Torque N·m (lb·in) I 10 (87)

THIRD CLUTCH AND SPRAG UNIT
AUTOMATIC TRANSMISSION (4L30-E) 7A-195
Disassembly steps
1. Retaining ring
2. Input sun gear assembly 3. Retaining washer 4. Bearing 5. Thrust washer 6. Clutch plates 7. Third clutch drum
Reassembly steps
To reassemble, follow the disassembly steps in the reverse order.
Fig. 7A-68
1•! .. 1 DISASSEMBL V
1. Retaining ring (Fig. 7A-69)
• Place the third clutch housing and intermediate
shaft
assembly upright, using the overdrive
internal gear as a support.
I®J • Locate the end of the sprag retaining ring.
Compress near the
end, using a screwdriver
through the side
slot and slide one tool blade
between ring and housing to hold the ring clear
of the groove.
• Repeat with a second tool blade near the other
end
of the retaining ring.
• Repeat with a third tool blade opposite the first
two.
• Repeat with two further blades equally spaced
apart.
Third
clutch retaining ring compressor: J-38450
2. Input sun gear assembly
3.
4.
5.
6.
7.
• Pull the input sun gear assembly unit until the
sprag retaining ring
clears the ring groove.
Retaining washer
Bearing
Thrust washer
Clutch plates
Third clutch drum
Fig. 7A-69
Third clutch
drum
assembly
00. internal