Page 1833 of 4770
AUTOMATIC TRANSAXLEOIL PUMP ±
AX±37
OIL PUMP
COMPONENTS
OIL PUMP DISASSEMBLY
1. REMOVE OIL SEAL RINGS
Remove the 2 oil seal rings from the stator shaft back
side.
2. REMOVE THRUST WASHER FROM STATOR SHAFT
BACK SIDE
AX02Y±02
AX02Z±02
Page 1834 of 4770
AUTOMATIC TRANSAXLEOIL PUMP ±
AX±38
3. REMOVE STATOR SHAFT
Remove the 11 bolts and stator shaft.
HINT: Keep the gears in assembly order.
4. REMOVE FRONT OIL SEAL
Pry off the oil seal with a screwdriver.
OIL PUMP BUSHING INSPECTION
1. CHECK BODY CLEARANCE OF DRIVEN GEAR
Push the driven gear to one side of the body.
Using a feeler gauge, measure the clearance.
Standard body clearance:
0.07±0.15 mm (0.0028±0.0059 in.)
Maximum body clearance:
0.30 mm (0.0118 in.)
If the body clearance is greater than the maximum, re-
place the oil pump body subassembly.
2. CHECK TIP CLEARANCE OF DRIVEN GEAR
Measure between the driven gear teeth and the cres-
cent±shaped part of the pump body.
Standard tip clearance:
0.11±0.14 mm (0.0043±0.0055 in.)
Maximum tip clearance:
0.30 mm (0.0118 in.)
If the tip clearance is greater than the maximum, replace
the oil pump body subassembly.
AX030±06
Page 1835 of 4770

AUTOMATIC TRANSAXLEOIL PUMP ±
AX±39
3. CHECK SIDE CLEARANCE OF BOTH GEARS
Using a steel straightedge and feeler gauge, measure the
side clearance of both gears.
Standard side clearance:
0.002±0.005 mm (0.0008±0.0020 in.)
Maximum side clearance:
0.100 mm (0.0039 in.)
There are 3 different thicknesses for drive and driven
gears.
Drive and driven gear thickness
MarkThickness mm (in.)
A9.440±9.456 (0.3717±0.3723)
B9.456±9.474 (0.3723±0.3730)
C9.474±9.490 (0.3730±0.3736)
If the thickest gear can not make the side clearance within
standard specification, replace the oil pump body subas-
sembly.
4. CHECK OIL PUMP BODY BUSHING
Using a dial indicator, measure the inside diameter of the
oil pump body bushing.
Maximum inside diameter:
38.18 mm (1.5031 in.)
If the inside diameter is greater than the maximum, re-
place the oil pump body subassembly.
5. CHECK STATOR SHAFT BUSHING
Using a dial indicator, measure the inside diameter stator
shaft bushing.
Maximum inside diameter:
21.57 mm (0.8492 in.)
If the inside diameter is greater than the maximum, re-
place the stator shaft.
OIL PUMP ASSEMBLY
1. INSTALL FRONT OIL SEAL
Using SST and a hammer, install a new oil seal. The seal
end should be flush with the outer edge of the pump body.
SST 09350±32014 (09351±32140)
AX031±02
Page 1836 of 4770
AUTOMATIC TRANSAXLEOIL PUMP ±
AX±40
2. INSTALL DRIVEN GEAR AND DRIVE GEAR
Make sure the top of the gears are facing upward.
3. INSTALL STATOR SHAFT TO PUMP BODY
(a) Align the stator shaft with each bolt hole.
(b) Torque the 11 bolts.
Torque: 10 N´m (100 kgf´cm, 7 ft´lbf)
4. INSTALL THRUST WASHER
(a) Coat the thrust washer with petroleum jelly.
(b) Align the tab of the washer with the hollow of the pump
body.
5. INSTALL OIL SEAL RINGS
Install the 2 oil seal rings to the stator shaft back side.
NOTICE: Do not spread the ring ends more than necessary.
HINT: After installing the oil seal rings, check that they
move smoothly.
6. CHECK PUMP DRIVE GEAR ROTATION
Turn the drive gear with 2 screwdrivers and make sure it
rotates smoothly.
NOTICE: Be careful not to damage the oil seal lip.
Page 1837 of 4770
AUTOMATIC TRANSAXLEDIRECT CLUTCH ±
AX±41
DIRECT CLUTCH
COMPONENTS
DIRECT CLUTCH DISASSEMBLY
1. CHECK PISTON STROKE OF DIRECT CLUTCH
(a) Install the direct clutch on the oil pump.
(b) Install a dial indicator and measuring terminal (SST) to-
gether, measure the direct clutch piston stroke while ap-
plying and releasing compressed air (392±785 kPa, 4±8
kg/cm
2, 57±114 psi).
SST 09350±32014 (09351±32190)
Piston stroke:
0.91±1.35 mm (0.0358±0.0531 in.)
If the piston stroke is greater than the maximum, inspect
each component.
AX032±02
AX033±05
Page 1838 of 4770
AUTOMATIC TRANSAXLEDIRECT CLUTCH ±
AX±42
2. REMOVE SNAP RING FROM CLUTCH DRUM
3. REMOVE FLANGE, DISCS AND PLATES
4. REMOVE PISTON RETURN SPRING
(a) Place SST on the spring retainer and compress the
springs with a press.
SST 09350±32014 (09351±32070)
(b) Remove the snap ring with snap ring pliers.
(c) Remove the piston return spring.
5. REMOVE CLUTCH PISTON
(a) Install the direct clutch onto the oil pump.
(b) Apply compressed air to the oil pump to remove the piston
(if the piston does not come out completely, use needle±
nose pliers to remove it).
(c) Remove the direct clutch from the oil pump.
(d) Remove the 2 O±rings from the piston.
Page 1839 of 4770

AUTOMATIC TRANSAXLEDIRECT CLUTCH ±
AX±43
DIRECT CLUTCH INSPECTION
1. INSPECT CLUTCH PISTON
(a) Check that the check ball is free by shaking the piston.
(b) Check that the valve does not leak by applying low±pres-
sure compressed air.
2. INSPECT DISCS, PLATES AND FLANGE
Check if the sliding surfaces of the discs, plates and
flange are worn or burnt. If necessary, replace them.
HINT:
If the lining of the disc is peeling off or discolored, or
even if a part of the printed numbers are defaced, re-
place all discs.
Before assembling new discs, soak them in ATF for
at least 15 minutes.
3. CHECK DIRECT CLUTCH BUSHING
Using a dial indicator, measure the inside diameter of the
direct clutch bushing.
Maximum inside diameter:
48.27 mm (1.9004 in.)
If the inside diameter is greater than the maximum, re-
place the direct clutch.
DIRECT CLUTCH ASSEMBLY
1. INSTALL CLUTCH PISTON IN DIRECT CLUTCH DRUM
(a) Install new O±rings to the piston. Coat the O±rings with
AT F.
(b) Being careful not to damage the O±rings, press the piston
into the drum with the cup side up.
2. INSTALL PISTON RETURN SPRING
(a) Place the return spring and snap ring onto the piston.
AX034±03
AX035±06
Page 1840 of 4770

AUTOMATIC TRANSAXLEDIRECT CLUTCH ±
AX±44
(b) Place SST on the spring retainer, and compress the re-
turn spring with a press.
SST 09350±32014 (09351±32070)
(c) Install the snap ring using snap ring pliers. Be sure the
end gap of snap ring is aligned with the spring retainer
claw.
3. INSTALL PLATES, DISCS AND FLANGE
(a) Install plates and discs.
Install in order:
P=Plate D=Disc
P±D±P±D±P±D
(b) Install the flange with the flat end facing downward.
4. INSTALL SNAP RING
Check that the end gap of the snap ring is not aligned with
one of the cutouts.
5. RECHECK PISTON STROKE OF DIRECT CLUTCH
(a) Install the direct clutch on the oil pump.
(b) Install a dial indicator and measuring terminal (SST) to-
gether, measure the direct clutch piston stroke while ap-
plying and releasing compressed air (392±785 kPa, 4±8
kgf/cm
2, 57±114 psi).
SST 09350±32014 (09351±32190)
Piston stroke:
0.91±1.35 mm (0.0358±0.0531 in.)
If the piston stroke is non±standard, select another
flange.
HINT: There are 2 different thickness for the flange.
Flange thickness:
2.70 mm (0.1063 in.)
3.00 mm (0.1181 in.)