Isuzu Trooper (1998-2002 year). Manual - part 724

AUTOMATIC TRANSMISSION (AW30-40LE)

7A–93

DISASSEMBLY OF MAJOR COMPONENTS (2)

242RY00005

Disassembly steps

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 1. Converter housing

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 2. Oil pan

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 3. Oil strainer assembly

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 4. Solenoid wiring

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 5. Valve body

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 6. Check valve, spring

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7. Spring

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8. Accumulator piston (B-2)

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 9. Accumulator piston (C-2)

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 10. Accumulator piston (B-0)

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 11. Accumulator piston (C-0)

12. Second brake drum gasket

7A–94

AUTOMATIC TRANSMISSION (AW30-40LE)

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Important operations

1. Converter housing

Remove the six bolts.
Remove the transmission housing.

2. Oil pan

NOTE:  
Do not turn over the transmission as this will contaminate
the valve body with foreign materials in the bottom of the
pan.

Remove the nineteen bolts.
Remove pan by lifting the transmission case.
Seal cutter: 5-8840-2153-0 (J-37228)

Examine particles in pan

Remove the magnet and use it to collect any steel chips.
Look carefully at the chips and particles in the pan and on
the magnet to anticipate what type of wear you will find in
the transmission:
Steel (magnetic).....bearing, gear and clutch plate wear
Brass (non-magnetic)...bushing wear

3. Oil strainer assembly

Remove four bolts holding the oil strainer.

NOTE:  
When reassembling components, install a new oil strainer
assembly.

AUTOMATIC TRANSMISSION (AW30-40LE)

7A–95

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4. Solenoid wiring

Disconnect the connectors from the solenoid S1(1), S2(2),
lock-up solenoid (3) and pressure control solenoid (4).
Turn over transmission, remove the solenoid wiring stopper
plate from the case.
Pull the wiring out of the transmission case.

5. Valve body

Remove the twenty bolts from valve body.

6. Check valve, spring
7. Spring

Remove the check valve and spring.
Remove two springs from C-0 accumulator piston.

7A–96

AUTOMATIC TRANSMISSION (AW30-40LE)

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 8. Accumulator piston (B-2)
 9. Accumulator piston (C-2)

Remove accumulator pistons and springs from
transmission case.

10. Accumulator piston (B-0)

Applying compressed air to the oil hole, remove the B-0
accumulator piston and spring.

11. Accumulator piston (C-0)

Remove the C-0 accumulator piston.