Isuzu KB P190. Manual - part 1036

UNIT REPAIR (AW30–40LE)

7A4–9

8. Remove the accumulator piston (B–2).

9. Remove the accumulator piston (C–2).

• Remove accumulator pistons and springs from

transmission case.

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10. Applying compressed air to the oil hole, remove the

B–0 accumulator piston and spring.

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11. Remove the C–0 accumulator piston.

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12. Remove the second brake drum gasket.

13. Remove the solenoid wiring.

• Turn over transmission, remove the solenoid

wiring stopper plate from the case.

• Pull the wiring out of the transmission case.

14. Remove the snap ring, rotor and key (4

×

4).

• Remove the snap ring from the output shaft.

• Remove the rotor and key.

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15. Remove the snap ring, speedometer sensor drive

gear and ball (4

×

2).

• Remove the snap ring from the output shaft.

• Remove the speedometer sensor drive gear, and

ball.

7A4–10

UNIT REPAIR (AW30–40LE)

16. Remove the spacer, rotor, key and snap ring (4

×

2).

• Remove the spacer, rotor and key.

• Remove the snap ring from the output shaft.

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Reassembly

1. Install the converter housing.

Torque: 

M10 – 34 N·m (3.5 kgf·m/25 lb·ft)

M12 – 57 N·m (5.8 kgf·m/42 lb·ft)

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2. Install the snap ring, key and rotor (4

×

2).

• Install the snap ring to the output shaft.

• Install the key and rotor.

3. Install the spacer, ball, speedometer sensor drive

gear and snap ring (4

×

2).

• Install the spacer, ball and speedometer sensor

drive gear.

• Install the snap ring to the output shaft.

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4. Install the key, rotor and snap ring (4

×

4).

• Install the key and rotor.

• Install the snap ring to the output shaft.

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UNIT REPAIR (AW30–40LE)

7A4–11

5. Install the second brake drum gasket.

• Install a new second brake drum gasket to the

transmission case.

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6. Individual piston operation inspection.

Check for the sound of operation while injecting
compressed air into the oil hole indicated in the
figure.

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EndOFCallout

NOTE:  When inspecting the direct clutch, check with
the C–0 accumulator piston hole closed. If there is no
noise, disassemble and check the condition of the parts.

7. Install the accumulator pistons.

• Coat the O–ring with ATF and install it to the

piston.
Install the three springs and four accumulator
pistons to the bore as shown in th figure.

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mm (in)

Legend

(1) OD direct clutch
(2) Direct clutch
(3) Forward clutch
(4) OD brake
(5) Second coast brake
(6) Second brake
(7) First and reverse brake

(A) C–0 Accumulator piston hole

Piston

Outer diameter

Height

B–2

36.8 mm (1.449 in)

62.5 mm (2.461 in)

C–2

36.8 mm (1.449 in)

56.6 mm (2.228 in)

B–0

31.8 mm (1.252 in)

52.0 mm (2.047 in)

C–0

29.8 mm (1.173 in)

44.0 mm (1.732 in)

Spring

Free length

Outer 

diameter

Color

B–2

75.8 (2.984)

20.1 (0.791)

PURPLE 

C–2
(Outer)

64.0 (2.520)

20.3 (0.799)

WHITE&

PINK

C–2 (Inner)

42.1 (1.657)

14.7 (0.579)

PINK

B–0

62.0 (2.441)

16.0 (0.630)

GREEN

C–0
(Outer)

74.6 (2.937)

20.9 (0.823)

ORANGE

C–0 (Inner)

46.0 (1.811)

14.0 (0.551)

YELLOW

7A4–12

UNIT REPAIR (AW30–40LE)

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8. Install new check valve and spring.

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9. Install the valve body.

• Align the groove of the manual valve to the pin of

the lever.

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• Install the twenty bolts.

NOTE:  Each bolt length (mm) is indicated in the figure.

Torque: 10 N·m (1.0 kgf·m/87 lb·in)

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