2007 ISUZU KB P190 oil

7A4–66 UNIT REPAIR (AW30–40LE)
Before assembling new discs, soak them in ATF
for at least fifteen minutes.
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4. Check piston return spring. Using calipers, measure the free length of the return
spring.
Standard length: 19.47 mm (0.7665 in)
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Reassembly
1. Coat the assembled thrust bearing and race with petroleum jelly and install it onto the forward clutch
drum, with the race side facing downward.
Bearing and race (Reference)
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2. Coat the three oil rings with ATF. Contract the oil seal rings as shown, and install
three oil seal rings onto the forward clutch drum.
NOTE: Do not spread the ring ends more than
necessary.
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Inside diameter 33.7 mm (1.327 in)
Outside diameter 47.8 mm (1.882 in)

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ISUZU KB P190 2007

7A4–72 UNIT REPAIR (AW30–40LE)
Planetary Sun Gear and No.1 One-Way Clutch
Disassembled View
RTW77ASF000301
EndOFCallout
Legend(1) Snap ring
(2) Planetary sun gear (3) Sun gear input drum
(4) Snap ring
(5) Oil seal ring

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ISUZU KB P190 2007

UNIT REPAIR (AW30–40LE) 7A4–73
Disassembly
1. Check operation of No.1 one-way clutchHold the planetary sun gear and turn the second
brake hub.
The second brake hub should turn freely clockwise
and should lock counterclockwise.
RUW37ASH004601
E ndOFCallout
2. Remove the one-way clutch and second brake hub.
3. Remove the trust washer (plastic).
4. Remove two oil seal rings (metal).
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5. Remove the snap ring with snap ring pliers.
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6. Remove the sun gear input drum.
7. Remove the snap ring from planetary sun gear.
Inspection and Repair
1. Check planetary sun gear bushing Using a dial indicator, measure the inside diameter
of the planetary sun gear bushing.
Maximum inside diameter: 27.08 mm (1.066 in) If the inside diameter is greater than the maximum,
replace the planetary sun gear.
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Legend
(1) Free
(2) Lock

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ISUZU KB P190 2007

7A4–74 UNIT REPAIR (AW30–40LE)
Reassembly
1. Install snap ring to planetary sun gear.
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2. Place a wooden block, etc. as a work stand andplace the planetary sun gear onto it.
Install the sun gear input drum onto the planetary
sun gear.
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3. Install snap ring with snap ring pliers.
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4. Coat the two oil seal rings (metal) with ATF. Install the two oil seal rings onto the planetary sun
gear.
NOTE: Do not spread the ring ends too much.
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ISUZU KB P190 2007

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
En dOFCallout
Legend
(1) Lock
(2) Free

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ISUZU KB P190 2007

UNIT REPAIR (AW30–40LE) 7A4–85
Install six clutch discs and six brake plates
alternately, starting with clutch disc, onto the rear
planetary gear assembly.
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11. Coat the oil seal ring with ATF and install it to the output shaft.
NOTE: Do not spread the ring ends too much.
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12. Install output shaft into rear planetary gear assembly.
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13. Install second brake assembly to output shaft.
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ISUZU KB P190 2007

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 fromthe 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

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ISUZU KB P190 2007

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 thecase 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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ISUZU KB P190 2007