Isuzu D-Max / Isuzu Rodeo (TFR/TFS). Manual — part 334

AUTOMATIC TRANSMISSION (AW30-40LE) 7A-185

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3. Stator shaft
4. Oil pump drive gear
5. Oil pump driven gear
6. Oil pump body

Remove 13 bolts, and then remove the stator shaft
from oil pump body.
Then remove drive and driven gear.

INSPECTION AND REPAIR

Make necessary correction or parts replacement if
wear, damage or any abnormal conditions are found
through inspection.

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Check oil pump body bushing

Using a dial indicator, measure the inside diameter of
the oil pump body bushing.
Maximum inside diameter: 38.19 mm (1.5035 in)
If the inside diameter is greater than the maximum,
replace the oil pump body.

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Check stator shaft bushing

Using a dial indicator, measure the inside diameter of
the stator shaft bushing.
Maximum inside diameter:

Front side: 21.58 mm (0.8496 in)
Rear side: 27.08 mm (1.0661 in)

If the inside diameter is greater than the maximum,
replace the stator shaft.

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Check tip clearance of both gears

Measure between the gear teeth and the cresent-
shaped part of the pump body.
Standard tip clearance: 0.11 – 0.14 mm

(0.0043 – 0.0055 in)

Maximum tip clearance: 0.19 mm (0.0075 in)
If the tip clearance is greater than the maximum,
replace the drive gear, driven gear or pump body.

7A-186 AUTOMATIC TRANSMISSION (AW30-40LE)

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Check body clearance of driven gear

Push the driven gear to one side of the body.
Use a feeler gauge, measure the clearance.
Standard body clearance: 0.07 – 0.15 mm

(0.0028 – 0.0059 in)

Maximum body clearance: 0.2 mm (0.0079 in)
If the body clearance is greater than the maximum,
replace the drive gear, driven gear or pump body.

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Check side clearance of both gears

Using a steel straightedge and a feeler gauge, measure
the side clearance of both gears.
Standard side clearance: 0.02 – 0.05 mm

(0.0008 – 0.0020 in)

Maximum side clearance: 0.1 mm (0.004 in)
If the side clearance is greater than the maximum,
replace the drive gear, driven gear or pump body.

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Check oil seal

Check for wear, damage or cracks.
If necessary, replace oil seal.
Pry off the oil seal with a screwdriver.

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Using special tool, install a new oil seal.
The oil seal end should be flush with the outer edge of
the pump body.
Oil seal installer : 5-8840-2256-0 (J-9617)
Coat the oil seal lip with multi purpose grease.

AUTOMATIC TRANSMISSION (AW30-40LE) 7A-187

REASSEMBLY

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Reassembly steps

1. Oil

pump

body

2. Oil pump driven gear
3. Oil pump drive gear

4. Stator

shaft

5. Oil seal ring
6. O-ring

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Reassembly steps

1. Oil pump body
2. Oil pump driven gear
3. Oil pump drive gear

Place the oil pump body on the torque converter.
Coat the driven gear and drive gear with ATF.
Install the driven gear and drive gear.

7A-188 AUTOMATIC TRANSMISSION (AW30-40LE)

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4. Stator shaft

Align the stator shaft with the bolt holes.
Tighten the thirteen bolts.
Torque: 11 N････m (1.1 kg････m/95 Ib････in)

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5. Oil seal ring

Coat the oil seal rings with ATF.
Contract the oil seal rings as shown, and install them
onto the stator shaft.
NOTE:
Do not spread the ring ends too much.

6. O-ring

Coat a new O-ring with ATF and install it to the oil
pump body.

O-ring size (Reference)

Inside diameter

204.9 mm (8.067 in)

Thickness

3.5 mm (0.138 in)

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Check oil pump drive gear rotation

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