Isuzu KB P190. Manual - part 1044

UNIT REPAIR (AW30–40LE)

7A4–41

7. Check oil pump drive gear rotation.

Make sure the drive gear rotates smoothly when
installed to the torque converter.

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7A4–42

UNIT REPAIR (AW30–40LE)

OD Planetary Gear and OD Direct Clutch Assembly (C–0)

Disassembled View

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Legend

(1) Thrust bearing
(2) OD direct clutch assembly
(3) O-ring
(4) OD direct clutch piston
(5) O-ring
(6) Piston return spring
(7) Snap ring
(8) Clutch disc
(9) Flange

(10) Snap ring

(11) Thrust bearing
(12) Snap ring
(13) Ring gear flange
(14) OD planetary ring gear
(15) Thrust bearing
(16) Race
(17) OD planetary gear assembly
(18) Thrust washer
(19) OD one-way clutch
(20) Retaining plate
(21) Snap ring

UNIT REPAIR (AW30–40LE)

7A4–43

Disassembly

1. Check operation of one-way clutch.

Hold the OD direct clutch drum and turn the input
shaft.
The input shaft should turn freely clockwise and
should lock counterclockwise.

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2. Remove OD direct clutch assembly from OD

planetary gear assembly.

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3. Then remove thrust bearing with the race from OD

direct clutch drum.

4. Check piston stroke of OD direct clutch (C–0).

Place the oil pump onto the torque converter, and
then place the OD direct clutch assembly onto the
oil pump.

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Use a dial indicator, measure the OD direct clutch
piston stroke applying and releasing the
compressed air (390 – 780 kPa or 57 – 114 psi) as
shown.

Piston stroke: 1.85 – 2.15 mm (0.0728 – 0.0846in)

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7A4–44

UNIT REPAIR (AW30–40LE)

5. Remove snap ring from clutch drum.

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6. Remove flange, two discs and two plates.

7. Place special tool on the spring retainer and

compress the return spring.
Using snap ring pliers, remove the snap ring.
Spring compressor : 5-8840-0195-0

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8. Remove piston return spring

9. Remove the OD direct clutch piston with O-ring.

• Place the oil pump onto the torque converter and

then place the OD direct clutch onto the oil pump.

• Holding the OD direct clutch piston by hand,

apply compressed air to the oil pump to remove
the OD direct clutch piston.

• Remove the OD direct clutch piston.

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10. Remove two O–rings from piston.

11. Remove bearing and race from OD planetary ring

gear.

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