Page 529 of 2389
DISASSEMBLY OF FORWARD CLUTCH
1. CHECK PISTON STROKE OF FORWARD CLUTCH
Using a dial indicator (long type pick or SST), measure the
forward clutch piston stroke applying and releasing the
compressed air (4 ± 8 kg/cm2, 57 ± 114 psi, 392 ± 78E
kPa) as shown.
SST 09350±32014 (09351±32190)
Piston stroke: 1.41 ± 1.82 mm
(0.0555 ± 0.0717 in.)
If the piston stroke is greater than the maximum, inspect
each component.
Forward Clutch
± AUTOMATIC TRANSAXLEComponent Parts (Forward Clutch) (A540E and A540H)AT±274
Page 530 of 2389
4. REMOVE RETURN SPRING
(a) Place SST on the spring retainer and compress the
springs with a shop press.
SST 09350±32014 (09351±32070)
(b) Remove the snap ring using snap ring pliers. 2. REMOVE SNAP RING FROM CLUTCH DRUM
(c) (A540E)
Remove the return spring. 3. REMOVE FLANGE, DISCS AND PLATES
± AUTOMATIC TRANSAXLEComponent Parts (Forward Clutch) (A±540E and A540H)AT±275
Page 531 of 2389
5. REMOVE CLUTCH PISTON
(a) Apply compressed air into the oil passage to remove the pis-
ton.
If the piston does not come out, use needle±nose pliers
to remove it. (A540H)
Remove the spring retainer and eighteen return
springs.
S. IF NECESSARY, REMOVE OIL SEAL RINGS
(A540E)
Remove the three oil seal rings from the shaft.(b) Remove the two 4±rings from the piston.
± AUTOMATIC TRANSAXLEComponent Parts (Forward Clutch) (A540E and A540H)AT±276
Page 532 of 2389

ASSEMBLY OF FORWARD CLUTCH
1. (A540E, A540H)
INSTALL OIL SEAL RINGS
Install the three oil seal rings (A540E) or two oil seal rings
(A540H) to the shaft.
NOTICE: Do not spread the ring ends more than necessary.
HINT: After installing the oil seal rings, check that they move
smoothly.
2. INSTALL CLUTCH PISTON TO CLUTCH DRUM
(a) Install the two new O±rings, to the piston. 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:
wIf the lining of the disc is exfoliated or discolored, or
even a part of the printed numbers are defaced, re-
place all discs.
wBefore assembling new discs, soak them in ATF for
at least fifteen minutes.
INSPECTION OF FORWARD CLUTCH
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
pressure compressed air. (A540H)
Remove the two oil seal rings from the
shaft.
± AUTOMATIC TRANSAXLEComponent Parts (Forward Clutch) (A±540E and A540H)AT±277
Page 533 of 2389

3. INSTALL PISTON RETURN SPRINGS
(a) Place the return spring and snap ring onto the piston.
(b) Place SST on the spring retainer, and compress the
springs with a shop press.
SST 09350±32014 (09351±32070)
(e) Install the snap ring with snap ring pliers.
Be sure the end gap of the snap ring is not aligned
with the spring retainer claw.
6. RECHECK PISTON STROKE OF FORWARD CLUTCH
Using a dial indicator (long type pick or SST), measure
the forward clutch piston stroke applying and releasing
the compressed air (4 ± 8 kg/cm2, 57 ± 114 psi, 392 ±
785 kPa) as shown next page.
SST 09350±32014 (09351±32190)
Piston stroke: 1.41 ± 1.82 mm
(0.0555 ± 0.0717 in.) 4. INSTALL PLATES, DISCS AND FLANGE
(a) Install the plates and discs.
Install in order: P=Plate D=Disc
P±D±P±D±P±D±P±D
(b) Install the flange with the flat end facing downward.
5. INSTALL SNAP RING
Check that the end gap of snap ring is not aligned with
one of the cutouts.(b) Coat the O±rings with ATF.
(c) Press the piston into the drum with the cup side
up, being careful not to damage the O±rings.
± AUTOMATIC TRANSAXLEComponent Parts (Forward Clutch) A540E and A540H)AT±278
Page 534 of 2389
If the piston stroke is nonstandard, select another flange.
HINT: There are two different thicknesses for the flange.
Flange thickness: 3.00 mm (0.1181 in.)
3.37 mm (0.1327 in.)
± AUTOMATIC TRANSAXLEComponent Parts (Forward Clutch) (A±540E and A540H)AT±279
Page 535 of 2389
DISASSEMBLY OF NO. 1 ONE±WAY CLUTCH
AND SUN GEAR
1. CHECK OPERATION OF NO. 1 ONE±WAY CLUTCH
Hold the sun gear and turn the hub. The hub should turn freely
clockwise and should lock counterclockwise.
2. REMOVE NO. 1 ONE±WAY CLUTCH FROM SUN
GEAR .
While turning the hub clockwise, remove the No. 1
one±way clutch from the sun gear.
Front Planetary Gear
± AUTOMATIC TRANSAXLEComponent Parts (Front Planetary Gear) (A540E and
A540H)AT±280
Page 536 of 2389
ASSEMBLY OF NO. 1 ONE±WAY CLUTCH
AND SUN GEAR
1. INSTALL SUN GEAR TO DRUM
(a) Install the sun gear to the drum.
(b) Using snap ring pliers, install the snap ring to drum. 5. CHECK SUN GEAR BUSHINGS
Using a dial indicator, measure the inside diameter of
the sun gear bushings.
Maximum inside diameter: 22.59 mm(0.8894 in.)
If the inside diameter is greater than the maximum, re-
place the sun gear. 4. REMOVE SUN GEAR FROM DRUM
(a) Using snap ring pliers, remove the snap ring from the
drum.
(b) Remove the sun gear from the drum. 3. REMOVE THRUST WASHER FROM SUN GEAR INPUT
DRUM
2. INSTALL THRUST WASHER TO SUN GEAR INPUT
DRUM
± AUTOMATIC TRANSAXLEComponent Parts (Front Planetary Gear) (A540E and
A540H)AT±281