2004 ISUZU TF SERIES Workshop Manual

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Page 3841 of 4264

ISUZU TF SERIES 2004 Workshop Manual UNIT REPAIR (AW30–40LE) 7A4–33
Install and tighten the two bolts.
Torque: 25 N·m (19lbft)
25 2RY 0 000 4
26. Check end of output shaft.
Using a dial indicator, measure the end play of the
output

Page 3842 of 4264

ISUZU TF SERIES 2004 Workshop Manual 7A4–34 UNIT REPAIR (AW30–40LE)
29. Check piston stroke of overdrive brake.
Place a dial indicator onto the overdrive brake
piston as shown in the figure.
25 2RY 0 000 3Measure the stroke by applyi

Page 3843 of 4264

ISUZU TF SERIES 2004 Workshop Manual UNIT REPAIR (AW30–40LE) 7A4–35
30. Coat the bearing and races with petroleum jelly and
install them onto the overdrive support.
Bearing and races diameter (Reference)
25 2RY 0 001 0
31. Install th

Page 3844 of 4264

ISUZU TF SERIES 2004 Workshop Manual 7A4–36 UNIT REPAIR (AW30–40LE)
34. Install the overdrive planetary gear and direct clutch.
2 52L10 000 1
35. Coat the assembled bearing and race with
petroleum jelly and install it onto the direct

Page 3845 of 4264

ISUZU TF SERIES 2004 Workshop Manual UNIT REPAIR (AW30–40LE) 7A4–37
Diaassembly, Inspection and
Reassembly of minor Components
NOTE: The instructions here are organized so that you
work on only one component group at a time.
This wi

UNIT REPAIR (AW30–40LE) 7A4–37
Diaassembly, Inspection and
Reassembly of minor Components
NOTE: The instructions here are organized so that you
work on only one component group at a time.
This will help avoid confusion from similar-looking parts
of different subassemblies being on your workbench at
the same time.
The component groups are inspected and repaired from
the converter housing side.
As much as possible, complete the inspection, repair
and reassembly before proceeding to the nex t
component group. If a component group cannot be
reassembled because parts are being ordered, be sure
to keep all parts of that group in separate container
while proceeding with disassembly, inspection, repair
and reassembly of other component groups.
Recommended ATF type DEXRON III.
General Cleaning Notes:
1. All disassembled parts should be washed clean and
any fluid passages and holes should be blown
through with compressed air.
2. When using compressed air to dry parts, always aim
away from yourself to prevent accidentally spraying
automatic transmission fluid in your face.
3. The recommended automatic transmission fluid
should be used for cleaning.
Parts Arrangement:
1. After cleaning, the parts should be arranged in
proper order to allow performing inspection, repairs,
and reassembly with efficiency.
2. When disassembling a valve body, be sure to keep
each valve together with the corresponding spring.
3. New brakes and clutches that are to be used for
replacement must be soaked in transmission fluid
for at least thirty minutes before assembly.
General Assembly:
1. All oil seal rings, clutch discs, clutch plates, rotating
parts, and sliding surfaces should be coated with
transmission fluid prior to reassembly.
2. All gaskets and rubber O-ring should be replaced.
3. Make sure that the ends of a snap ring are not
aligned with one of the cutouts and are installed in
the groove correctly.
4. If a worn bushing is to be replaced, the
subassembly containing that bushing must be
replaced.
5. Check thrust bearings and races for wear or
damage. Replace if necessary.
6. Use petroleum jelly or vaseline to keep parts in
place.

Page 3846 of 4264

ISUZU TF SERIES 2004 Workshop Manual 7A4–38 UNIT REPAIR (AW30–40LE)
Oil Pump
Disassembly View
2 41R20 0003
E nd O FCallo ut
Disassembly
1. Use torque converter as work stand.
Remove 2 oil seal rings from stator shaft.
24 1RY 0 0005

Page 3847 of 4264

ISUZU TF SERIES 2004 Workshop Manual UNIT REPAIR (AW30–40LE) 7A4–39
2. Remove the O-ring.
3. Remove the stator shaft.
4. Remove the oil pump drive gear.
5. Remove the oil pump driven gear.
6. Remove the oil pump body.
Remove 13 bolts

Page 3848 of 4264

ISUZU TF SERIES 2004 Workshop Manual 7A4–40 UNIT REPAIR (AW30–40LE)
4. 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.

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