Page 137 of 447
AUTOMATIC TRANSMISSION (4 A/T) 7B-95
10) Attach special tool (B) to dial gauge (2) and set them on the
lowest clutch plate.
Special tool
(B) : 09952-06010
11) Measure piston stroke by blowing compressed air (4 kg/cm
2,
57 psi) as shown in figure.
If the piston stroke is out of specification, replace clutch
discs, plates and flange.
Front clutch piston stroke
: 1.46 – 1.64 mm (0.0575 – 0.0646 in.)
REAR CLUTCH (C1 CLUTCH)
1. Front clutch assembly
3. Air gun
1. Input shaft oil seal ring
: Apply grease 99000-25030 to all over surface.8. Clutch plate
2. Input shaft subassembly 9. Clutch disc
3. D-ring
: Apply grease 99000-25030 to all over surface.10. Clutch flange
4. Rear clutch piston
: Apply grease 99000-25030 to the lip of the piston.11. Snap ring
5. Rear clutch return spring seat Apply automatic transmission fluid.
6. Rear clutch balancer Do not reuse.
7. Shaft snap ring
Page 138 of 447

7B-96 AUTOMATIC TRANSMISSION (4 A/T)
DISASSEMBLY
1) Remove snap ring.
2) Remove flange (1), discs and plates.
3) Remove shaft snap ring (1).
Compress piston return springs and remove shaft snap ring.
Place special tool (clutch spring compressor) on spring seat
and compress spring with a press (2), and then remove shaft
snap ring, using a flat end rod or the like (3).
Special tool
(A) : 09926-96020
4) Remove rear clutch balancer (1) and rear clutch return
spring seat (2).
5) Remove rear clutch piston (3).
If piston does not pop out, blow compressed air through
input shaft oil hole to remove piston.
6) Remove D-ring, and oil seals from input shaft subassembly
(4).
INSPECTION
Clutch Discs, Plates and Flange
Check that sliding surfaces of discs, plates and flanges are not
worn or burnt. If necessary, replace.
CAUTION:
Do not push down return spring more than necessary.
NOTE:
If disc lining is exfoliated or discolored, replace all
discs.
Before assembling new discs, soak them in A/T fluid
for at least two hours.
Page 139 of 447

AUTOMATIC TRANSMISSION (4 A/T) 7B-97
Rear Clutch Return Spring Seat
Measure height of overdrive clutch return spring.
Height of overdrive clutch return spring
: 22.01 mm (0.867 in.)
ASSEMBLY
1) Install new D-ring (7) and oil seals (2) to input shaft subas-
sembly. Apply grease to D-ring and fit it to input shaft subas-
sembly (1).
“A” : Grease 99000-25030
2) Install piston (6) into input shaft subassembly.
Apply grease to the lip of the piston.
“A” : Grease 99000-25030
Use care that the lip does not get twisted or caught.
3) Install rear clutch return spring seat (5) and rear clutch bal-
ancer (4).
4) Install shaft snap ring (1).
Compress return springs and install shaft snap rings in
groove by using a flat end rod or the like (3).
Place special tool (clutch spring compressor) on spring seat
and compress springs with a press (2).
Special tool
(A) : 09926-96020 NOTE:
Do not apply excessive force when measuring spring
height.
Perform measurement at several points.
3. Snap ring
CAUTION:
Do not compress return spring more than necessary.
Page 140 of 447
7B-98 AUTOMATIC TRANSMISSION (4 A/T)
5) Install discs, plates and flange (1) in following order.
(1) Plate →
(2) Disc →
(3) Plate →
(4) Disc →
(5) Plate →
(6) Disc →
(7) Plate →
(8) Disc →
(9) Plate →
(10) Disc →
(11) Flange
6) Install snap ring (1).NOTE:
Before assembly, new discs should be soaked in auto-
matic transmission fluid for at least 2 hours.
NOTE:
Make sure that the ends of the snap ring do not come to
the opening of the input shaft subassembly.
Page 141 of 447
AUTOMATIC TRANSMISSION (4 A/T) 7B-99
7) Place special tool (C) on soft jawed vise (2) with wider open-
ing (1) facing up.
Special tool
(C) : 09926-26040
8) Place rear clutch assembly (1) on special tool (C).
9) Set dial gauge (2) on the top of clutch flange (3) and mea-
sure clearance by blowing compressed air (4 kg/cm
2, 57 psi)
as shown in figure.
If the clearance is out of specification, replace clutch discs,
plates and flange.
Rear clutch disc clearance
: 0.80 – 1.40 mm (0.031 – 0.055 in.)
10) Attach special tool (B) to dial gauge (4) and set them on the
lowest clutch plate (2).
Special tool
(B) : 09952-06010
11) Measure piston stroke by blowing compressed air (4 kg/cm
2,
57 psi) as shown in figure.
If the piston stroke is out of specification, replace clutch
discs, plates and flange.
Rear clutch piston stroke
: 1.93 – 2.13 mm (0.076 – 0.084 in.)
1. Rear clutch assembly
3. Air gun
Page 142 of 447
7B-100 AUTOMATIC TRANSMISSION (4 A/T)
DIRECT CLUTCH (C0 CLUTCH)
DISASSEMBLY
1) Remove snap ring.
2) Remove flange (1), discs and plates.
3) Remove shaft snap ring (1).
Compress piston return springs and remove shaft snap ring.
Place special tool (clutch spring compressor) on spring seat
and compress spring with a press (2), and then remove shaft
snap ring, using a flat end rod or the like (3).
Special tool
(A) : 09926-96010
1. Direct clutch (C0) No.1 drum 5. Direct clutch balancer 9. Clutch flange
2. D-ring
: Apply grease 99000-25030 to all over surface.6. Shaft snap ring 10. Snap ring
3. Direct clutch piston
: Apply grease 99000-25030 to the lip of the piston.7. Clutch plate Apply automatic transmission fluid.
4. Direct clutch return spring seat 8. Clutch disc Do not reuse.
CAUTION:
Do not push down return spring more than necessary.
Page 143 of 447
AUTOMATIC TRANSMISSION (4 A/T) 7B-101
4) Remove direct clutch balancer (1) and direct clutch return
spring seat (2).
5) Remove direct clutch piston (3).
Blow compressed air through input shaft oil hole to remove
piston. If piston does not pop out, take it out with long nose
pliers.
6) Remove D-ring (4) from direct clutch No.1 drum (5).
INSPECTION
Clutch Discs, Plates and Flange
Check that sliding surfaces of discs, plates and flanges are not
worn or burnt. If necessary, replace.
Direct Clutch Return Spring Seat
Measure height of direct clutch return spring.
Height of direct clutch return spring
: 16.3 mm (0.642 in.)
.
NOTE:
If disc lining is exfoliated or discolored, replace all
discs.
Before assembling new discs, soak them in A/T fluid
for at least two hours.
NOTE:
Do not apply excessive force when measuring spring
height.
Perform measurement at several points.
Page 144 of 447

7B-102 AUTOMATIC TRANSMISSION (4 A/T)
Direct Clutch Piston Lip and Direct Clutch Balancer Lip
Check each lip for wear, deformation, cut, and/or hardening. If
necessary, replace.
ASSEMBLY
1) Install new D-ring (5) to direct clutch No.1 drum (6).
Apply grease to D-ring and fit it to drum.
“A”: Grease 99000-25030
2) Install piston (4) into direct clutch No.1 drum.
Use care that the piston lip does not get twisted or caught.
Apply grease to the lip of the piston.
“A”: Grease 99000-25030
3) Install direct clutch return spring seat (3) and direct clutch
balancer (2).
4) Install new shaft snap ring (1).
Compress return springs and install shaft snap ring in groove
by using a flat end rod or the like (3).
Place special tool (clutch spring compressor) on spring seat
and compress springs with a press (2).
Special tool
(A) : 09926-96010
5) Install discs, plates and flange (1) in following order.
(1) Flange No.1 →
(2) Disc →
(3) Plate →
(4) Disc →
(5)
Flange No.2
1. Snap ring
CAUTION:
Do not compress return spring more than necessary.
NOTE:
Before assembly, new discs should be soaked in auto-
matic transmission fluid for at least 2 hours.