Isuzu Trooper (1998-2002 year). Manual — part 727
AUTOMATIC TRANSMISSION (AW30-40LE)
7A–105
248RY00014
248RY00015
248RY00016
248RY00017
23. Snap ring
Using two screwdrivers, remove the snap ring.
24. Flange, plate and disc
Remove the flange, five discs and five plates.
Check pack clearance of first and reverse brake
Using a feeler gauge, measure the clearance between the
plate and second brake drum as shown in the figure.
If the values are nonstandard, select another flange.
25. Snap ring
Using snap ring pliers, remove the snap ring.
mm (in.)
Clearance
0.7–1.0
(0.0276–0.0394)
Available flange sizes
mm (in.)
4.0 (0.158)
4.8 (0.189)
4.2 (0.165)
5.0 (0.197)
4.4 (0.173)
5.2 (0.205)
4.6 (0.181)
5.4 (0.213)
7A–106
AUTOMATIC TRANSMISSION (AW30-40LE)
247RY00009
248RY00018
26. Rear planetary gear, second brake drum and output
shaft
Remove the rear planetary gear, second brake drum and
output shaft as an assembly.
27. Bearing
Remove the assembled thrust bearing and race from the
case.
AUTOMATIC TRANSMISSION (AW30-40LE)
7A–107
DISASSEMBLY, INSPECTION AND
REASSEMBLY OF MINOR COMPONENTS
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 next component group. If
a component group cannot be reassembled because parts are
being ordered, be sure to keep all parts of that group in a
separate container while proceeding with disassembly,
inspection, repair and reassembly of other component groups.
Recommended ATF type BESCO ATF II or III.
GENERAL CLEANING NOTES:
1. All disassembled parts should be washed clean and any
fluid passages and holes 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 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-rings should be replaced.
3. Make sure that 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.
7A–108
AUTOMATIC TRANSMISSION (AW30-40LE)
OIL PUMP
DISASSEMBLY
241RY00004
241RY00005
Important operations
1. Oil seal ring
Use torque converter as work stand.
Remove 2 oil seal rings from stator shaft.
2. O-ring
Remove O-ring.
Disassembly steps
▲
1. Oil seal ring
▲
2. O-ring
▲
3. Stator shaft
4. Oil pump drive gear
5. Oil pump driven gear
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