Page 5889 of 6000
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
Page 5890 of 6000
AUTOMATIC TRANSMISSION (AW30-40LE) 7A–109
241RY00006
241RY00007
241RY00008
3. Stator shaft
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.
Check oil pump body bushing
Using a dial indicator, measure the inside diameter of the
oil pump body bushing.
If the inside diameter is greater than the maximum, replace
the oil pump body.
Check stator shaft bushing
Using a dial indicator, measure the inside diameter of the stator
shaft bushing.
If the inside diameter is greater than maximum, replace the
stator shaft.mm (in.)
Maximum inside diameter 38.19 (1.5035)
mm (in.)
Maximum inside
diameterFront side 21.58 (0.8496)
Rear side 27.08 (1.0661)
Page 5891 of 6000

7A–110 AUTOMATIC TRANSMISSION (AW30-40LE)
241RY00009
241RY00010
241RY00011
241RY00012
Check tip clearance of both gears
Measure between the gear teeth and the cresent-shaped
par t of the pump body.
If the tip clearance is greater than the maximum, replace
the drive gear, driven gear or pump body.
Check body clearance of driven gear
Push the driven gear to one side of the body.
Use a feeler gauge, measure the clearance.
If the body clearance is greater than the maximum, replace
the drive gear, driven gear or pump body.
Check side clearance of both gears
Using a steel straightedge and a feeler gauge, measure the
side clearance of both gears.
If the side clearance is greater than the maximum, replace
the drive gear, driven gear or pump body.
Check oil seal
Check for wear, damage or cracks.
If necessary, replace oil seal.
Pry off the oil seal with a screwdriver.mm (in.)
Standard tip clearance0.11–0.14
(0.0043–0.0055)
Maximum tip clearance 0.3 (0.012)
mm (in.)
Standard body clearance0.07–0.15
(0.0028–0.0059)
Maximum body clearance 0.3 (0.012)
mm (in.)
Standard side clearance0.02–0.05
(0.0008–0.0020)
Maximum side clearance 0.1 (0.004)
Page 5892 of 6000
AUTOMATIC TRANSMISSION (AW30-40LE) 7A–111
241RY00013
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.
Page 5893 of 6000
7A–112 AUTOMATIC TRANSMISSION (AW30-40LE)
REASSEMBLY
241RY00019
241RY00014
Important operations
1. Oil pump driven 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.
Reassembly steps
1. Oil pump driven gear
2. Oil pump drive gear
3. Stator shaft
4. Oil seal ring
5. O-ring
Page 5894 of 6000
AUTOMATIC TRANSMISSION (AW30-40LE) 7A–113
241RY00006
241RY00015
241RY00016
241RY00017
3. Stator shaft
Align the stator shaft with the bolt holes.
Tighten the thir teen bolts.
4. 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.
5. O-ring
Coat a new O-ring with ATF and install it to the oil pump
body.
Check oil pump drive gear rotation
Make sure the drive gear rotates smoothly when installed to
the torque converter.Nꞏm (kgꞏm/Ib in)
Torque 11 (1.1/95)
O-ring size (Reference) mm (in.)
Inside diameter 204.9 (8.067)
Thickness 3.5 (0.138)
Page 5895 of 6000
7A–114 AUTOMATIC TRANSMISSION (AW30-40LE)
OD PLANETARY GEAR AND OD DIRECT CLUTCH ASSEMBLY (C-0)
DISASSEMBLY
252L100002
Disassembly steps
1. OD direct clutch assembly
2. Thrust bearing
3. Snap ring
4. Flange, disc and plate
5. Snap ring
6. Piston retur n spring
7. OD direct clutch piston with O-ring
8. O-ring
9. Thrust bearing
10. Snap ring
11. Ring gear flange
12. Race
13. Snap ring
14. Retaining plate
15. OD one-way clutch
16. Thrust washer
Page 5896 of 6000
AUTOMATIC TRANSMISSION (AW30-40LE) 7A–115
252L100003
252L100004
252L100005
252L100016
Important operations
Check operation of one-way clutch
Hold the OD direct clutch drum and turn the input shaft.
The input shaft should turn freely clockwise and should lock
counterclockwise.
(1): Free
(2): Lock
1. OD direct clutch assembly
Remove OD direct clutch assembly from OD planetary
gear.
2. Thrust bearing
Then remove thrust bearing with the race from OD direct
clutch drum.
Check piston stroke of OD direct clutch (C-O)
Place the oil pump onto the torque conver ter, and then
place the OD direct clutch assembly onto the oil pump.
Use a dial indicator, measure the OD direct clutch piston
stroke applying and releasing the compressed air (4– 8 kg/
cm
2, 57– 114 psi, 392– 785 kPa) as shown.
mm (in.)
Piston stroke1.85– 2.15
(0.0728– 0.0847)