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AT3648
O/D One-Way Clutch
with Outer RaceRetaining
Plate
AT3649
AT0426
AT5053 AT3647
3. REMOVE O/D ONE-WAY CLUTCH AND OUTER RACE
(a) Remove the snap ring.
(b) Remove the retaining plate.
(c) Remove the O/D one-way clutch with outer race.
(d) Remove the two retainers from both sides of the
O/D one-way clutch.
(e) Remove the O/D one-way clutch from the outer
race.
HINT: Note the direction of the one-way clutch.
4. REMOVE NO. 3 PLANETARY THRUST WASHER
5. REMOVE PLUGS FROM PLANETARY GEAR
Remove the four plugs with a magnetic finger.
HINT: Be careful not to lose them.
AT-74- AUTOMATIC TRANSAXLEComponent Parts (Overdrive Unit)
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AT3651
SST
AT3652
SST
AT3653
AT0431
SST
AT3650
6. REMOVE ADJUSTING NUT AND LOCKING WASHER
(a) Pry off the locking washer.
(b) Using SST, loosen the adjusting nut.
SST 09350-32014 (09351-32080)
(c) Remove the adjusting nut and locking washer.
7. REMOVE INTERMEDIATE SHAFT BEARING
Using SST, press out the bearing from the shaft.
SST 09950-00020
8. REMOVE COUNTER DRIVE GEAR AND FRONT
BEARING
Press out the gear and bearing together.
9. REMOVE REAR BEARING
(a) Using SST, press out the bearing.
SST 09950-00020
- AUTOMATIC TRANSAXLEComponent Parts (Overdrive Unit)AT-75
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AT3654
AT3655
AT3656
AT4432 AT4431
(b) Tag the bearings to show the location for reas-
sembly.
10. REMOVE OVERDRIVE PLANETARY RING GEAR
FROM COUNTER DRIVE GEAR
(a) While pulling up the ring gear, compress the snap
ring with needle-nose pliers and remove it from
the groove.
(b) Remove the ring gear from the counter drive
gear.
(c) Remove the snap ring from the ring gear.
11. REMOVE OUTER RACES FROM COUNTER DRIVE
GEAR
(a) Drive out the two races with a brass bar and
hammer.
(b) Tag the races to show the location for reassembly.
AT-76- AUTOMATIC TRANSAXLEComponent Parts (Overdrive Unit)
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AT4305
AT3657
AT3658
A: Front
B: Rear SST
AT3657
12. REMOVE SNAP RING FROM COUNTER DRIVE
GEAR
Using a screwdriver, remove the snap ring.
INSPECTION OF OVERDRIVE PLANETARY
GEAR
MEASURE PLANETARY PINION GEAR THRUST
CLEARANCE
Using a feeler gauge, measure the planetary pinion gear
thrust clearance.
Standard clearance: 0.16 - 0.56 mm
(0.0063 - 0.0220 in.)
Maximum clearance: 0.61 mm
(0.0240 in.)
If the clearance is greater than the maximum, replace the
planetary gear assembly.
ASSEMBLY OF COUNTER DRIVE GEAR
1. INSTALL SNAP RING INTO COUNTER GEAR
Install the snap ring with a screwdriver.
2. INSTALL OUTER RACES INTO COUNTER DRIVE
GEAR
Using SST, press in the two outer races to both sides
of the gear.
SST 09350-32014 (09351-32120, 09351-32150)
HINT: Press in the two outer races until they touch the
snap ring. Tap the races in straight, so that they do not
tilt.
- AUTOMATIC TRANSAXLEComponent Parts (Overdrive Unit)AT-77
Page 93 of 2389
AT3659
AT3660
SST
AT3661
Counter Drive
Gear Front Bearing
AT3662
SST
AT3655
3. INSTALL OVERDRIVE PLANETARY RING GEAR INTO
COUNTER DRIVE GEAR
(a) Install the snap ring to the ring gear.
(b) While pushing down the ring gear, squeeze the
snap ring end with needle-nose pliers, and install
it into the groove.
4. INSTALL REAR BEARING
Using SST, press in the bearing onto the shaft.
SST 09350-32014 (09351-32120)
HINT: Press in the bearing until the side surface of the
inner race touches the planetary carrier.
5. INSTALL COUNTER DRIVE GEAR AND FRONT
BEARING
(a) Install the gear onto the shaft, and mesh the ring
gear with the planetary pinions.
(b) Place the front bearing onto the shaft.
(c) Using SST, press in the bearing until slightly play
between the bearings.
SST 09350-32014 (09351-32120)
HINT: Hold the ring gear to prevent it from falling.
AT-78- AUTOMATIC TRANSAXLEComponent Parts (Overdrive Unit)
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AT3665
Washer
AT3666
Adjusting Nut
AT3667
Adjusting
Nut
AT5052 AT3663
SST
6. INSTALL INTERMEDIATE SHAFT BEARING
Using SST, press in the bearing until it slightly touches
the front bearing of the counter drive gear.
SST 09350-32014 (09351-32120)
HINT: The counter drive gear can be turned lightly.
7. PLACE NEW LOCKING WASHER
8. INSTALL ADJUSTING NUT AND ADJUST PRELOAD
OF COUNTER DRIVE GEAR
(a) Hold the overdrive planetary gear in a vise with
soft jaws.
(b) Using SST, tighten the adjusting nut until the fol-
lowing gear starting load is reached on the ten-
sion gauge.
SST 09350-32014 (09351-32080)
Preload (at starting): 940-1,560 g
(2.1-3.4 lb, 9.2-15.3 N)
HINT: Turn the counter drive gear right and left several
times before measuring the preload.
(c) Lock the adjusting nut with one tab on locking
washer. Bend the locking washer tab until it is
even with the adjusting nut groove.
9. INSTALL NO. 3 OVERDRIVE PLANETARY THRUST
WASHER
10. INSTALL PINION SHAFT PLUGS
Install the four plugs into the pinion shaft.
- AUTOMATIC TRANSAXLEComponent Parts (Overdrive Unit)AT-79
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AT3645HoldLockFreeTurn
AT0426
AT3649
AT3748
AT3647
11. INSTALL OVERDRIVE ONE-WAY CLUTCH AND
RETAINING PLATE
(a) Install the one-way clutch into the outer race.
(b) Install the two retainer on both sides of the one-
way clutch.
(c) Install the one-way clutch into the overdrive plane-
tary gear.
HINT: Be sure that the one-way clutch is installed in the
correct direction.
(d) Install the retaining plate.
(e) Install the snap ring.
12. CHECK OPERATION OF O/D ONE-WAY CLUTCH
(a) Install the overdrive direct clutch into the one-
way clutch.
(b) Hold the overdrive direct clutch and turn the in-
termediate shaft. The shaft should turn freely
clockwise and should lock counterclockwise.
(c) Remove the overdrive direct clutch.
AT-80- AUTOMATIC TRANSAXLEComponent Parts (Overdrive Unit)
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AT3668
AT3669
Piston Plate
AT3670
AT0441
AT7728
DISASSEMBLY OF OVERDRIVE CASE
1. REMOVE C0 ACCUMULATOR PISTON FROM
OVERDRIVE CASE
(a) Using snap ring pliers, remove the snap ring.
(b) Remove the retaining plate and two springs.
(c) Remove the accumulator piston.
(d) Remove the O-ring from the piston.
2. REMOVE OIL SEAL RINGS
Spread the two rings apart and remove them.
ASSEMBLY OF OVERDRIVE CASE
1. INSTALL OIL SEAL RINGS ON OVERDRIVE CASE
Spread the two rings apart and install them into the
groove.
HINT: After installing the oil seal rings, check that they
move smoothly.
- AUTOMATIC TRANSAXLEComponent Parts (Overdrive Unit)AT-81