Isuzu KB P190. Manual — part 1056
UNIT REPAIR (AW30–40LE)
7A4–89
6. Align the teeth of the first and reverse brake piston
No.2 into the proper grooves.
Being careful not to damage the O-rings, press in
the first and reverse brake piston No.2 with No.1
into the transmission case.
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7. Place piston return spring onto first and reverse
brake piston No.2.
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8. Set special tool as shown, and compress the return
spring with special tool.
Spring compressor: 5-8840-0254-0
Install the snap ring with snap ring pliers.
Be sure the end gap of the snap ring is not aligned
with the spring retainer claw.
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9. Check first and reverse brake piston movement.
Make sure the first and reverse brake piston moves
smoothly when applying and releasing the
compressed air into the transmission case.
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7A4–90
UNIT REPAIR (AW30–40LE)
10. Coat the assembled bearing and race with
petroleum jelly.
Install the assembled bearing and race facing the
bearing side upward.
Bearing and race diameter (Reference)
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Inside diameter
39.38 mm (1.550 in)
Outside diameter
58.15 mm (2.289 in)
UNIT REPAIR (AW30–40LE)
7A4–91
Transmission Case
Disassembled View
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EndOFCallout
Disassembly
1. Using a chisel, cut off the spacer and remove it from
the shaft.
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Legend
(1) Spacer
(2) Pin
(3) Manual valve lever shaft
(4) Manual valve lever
(5) Oil seal
(6) Oil seal
7A4–92
UNIT REPAIR (AW30–40LE)
2. Using a punch, drive out the pin.
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3. Pull the manual valve lever shaft out through the
case by the threads.
4. Take out the manual valve lever.
5. Using a screwdriver, remove the oil seals.
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Reassembly
1. Coat a new oil seal lip with multi purpose grease.
Using special tool, drive in the oil seal.
Oil seal installer : 5-8840-2169-0
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2. Assemble a new spacer to the manual valve lever.
3. Install the manual valve lever shaft to the
transmission case through the manual valve lever by
the threads.
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