Isuzu KB P190. Manual — part 1054
UNIT REPAIR (AW30–40LE)
7A4–81
Disassembly
1. Remove second brake assembly from output shaft.
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2. Remove oil seal ring from output shaft.
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3. Remove the seven discs, seven plates and flange
(B–3).
4. Remove rear planetary gear from rear planetary ring
gear.
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5. Check operation of No.2 one-way clutch.
Hold the planetary gear and turn the one-way clutch
inner race.
The one-way clutch inner race should turn freely
counterclockwise and should lock clockwise.
RUW37ASH004701
EndOFCallout
Legend
(1) Lock
(2) Free
7A4–82
UNIT REPAIR (AW30–40LE)
6. Remove the one-way clutch inner race from the rear
planetary gear.
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7. Remove the snap ring with a screwdriver.
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8. Remove the one-way clutch with retainers from the
planetary gear.
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9. Remove the thrust washer (plastic) from front side
of rear planetary gear.
10. Remove the thrust washer (plastic) from rear side of
rear planetary gear.
11. Remove the thrust bearing and race from front side
of ring gear flange.
12. Remove the snap ring from rear planetary ring gear.
13. Remove the ring gear flange from rear planetary
ring gear.
14. Check disc, plate and flange.
Check to see if the sliding surface of the disc, plate
and flange are worn or burnt. If necessary, replace
them.
• If the lining of the disc is peeling off or discolored,
or even if parts of the printed numbers are
defaced, replace all discs.
• Before assembling new discs, soak them in ATF
for at least fifteen minutes.
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UNIT REPAIR (AW30–40LE)
7A4–83
Reassembly
1. Install ring gear flange to the rear planetary ring
gear.
2. Install snap ring to the rear planetary ring gear.
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3. Coat the races and bearing with petroleum jelly, and
install them onto the rear planetary ring gear.
Races and bearing diameter (Reference)
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4. Coat the thrust washers (plastic) with petroleum
jelly.
Install the thrust washers onto both sides of the rear
planetary gear, facing the grooved side upward.
NOTE: Make sure that the lugs fit into the cutout
portions on the rear planetary gear.
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5. Install the one-way clutch with the flanged side
facing upward onto the rear planetary gear.
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6. Install snap ring.
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Inside
Outside
Race (A)
28.5 mm (1.122 in)
44.2 mm (1.740 in)
Bearing and
race (B)
27.7 mm (1.091 in)
44.2 mm (1.740 in)
7A4–84
UNIT REPAIR (AW30–40LE)
7. While turning counterclockwise, install one-way
clutch inner race to rear planetary gear.
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8. Check operation of one-way clutch.
Hold the planetary gear and turn the one-way clutch
inner race.
The one-way clutch inner race should turn freely
counterclockwise and should lock clockwise.
RUW37ASH004701
EndOFCallout
9. Install rear planetary gear onto rear planetary ring
gear.
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10. Install the disc, plate and flange (B–3).
• Install a brake flange onto the rear planetary gear
assembly.
• Install a clutch disc onto the rear planetary gear
assembly.
NOTE: The claw interval of the plate should be as
shown in the figure when viewing the clutch plate from
the arrow direction.
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Legend
(1) Lock
(2) Free
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