Page 4217 of 4264
UNIT REPAIR (JR405E) 7A4-43
06C&L-SUB08
07C&L-SUB09
08C&L-SUB10
09C&L-SUB11
10C&L-SUB12
Remove the bearing race from the rear internal gear.
Page 4218 of 4264
7A4-44 UNIT REPAIR (JR405E)
11C&L-SUB13
11.Snap ring
Remove the low clutch snap ring.
12C&L-SUB15
12.Retaining plate, drive plate, driven plate, and dish plate
Remove the low clutch retaining plate, the 7 drive plates,
the 7 driven plates, and the dish plate.
13C&L-SUB18
13.Snap ring
Install the spring compressor to the low clutch drum.
Spring compressor: 5-8840-2759-0
Carefully press the cancel cover down.
Take care not to damage the return spring.
14C&L-SUB19
Remove the snap ring.
31C&L-SUB20
14.Cancel cover
Remove the cancel cover.
Page 4219 of 4264
UNIT REPAIR (JR405E) 7A4-45
30C&L-SUB21
15.Return spring
Remove the return spring.
15C&L-SUB38
16.Low clutch piston
Insert the low one-way clutch inner race to the low clutch
drum.
Force compressed air through the oil passages of the
low one-way clutch inner race to remove the low clutch
piston.
29C&L-SUB22
16C&L-SUB25
17.Snap ring
Raise the low one-way clutch side.
Remove the low one-way clutch snap ring.
17C&L-SUB27
18.Side plate
Remove the side plate.
Page 4220 of 4264
7A4-46 UNIT REPAIR (JR405E)
18C&L-SUB28
19.Low one-way clutch
Remove the low one-way clutch.
19C&L-SUB29
20.Snap ring
Remove the snap ring from the low clutch drum.
20C&L-SUB31
21.Bearing
Remove the bearing.
Inspection
Drive plate
Measure the drive plate facing thickness at 3 points.
Calculate the average value.
If the average value is less than the specified limit, the
drive plate must be replaced.
Drive plate facing thickness:
Standard – 2.0 mm (0.079 in)
Limit – 1.8 mm (0.071 in)
Return spring
Check the number of effective return spring coils.
If the number is less than the specified minimum, the
return spring must be replaced.
Effective return spring coils (standard): 9.9
Measure the return spring outside diameter, free length,
and linear diameter.
If any of the measured values exceed the specified limit,
the return spring must be replaced.
Return spring measurements (standard):
Outside diameter – 9.7 mm (0.382 in)
Page 4221 of 4264
UNIT REPAIR (JR405E) 7A4-47
Free length – 36.4 mm (1.433 in)
Linear diameter – 1.2 mm (0.047 in)
21C&L-SUB31
Reassembly steps
Coat the parts with ATF before installing them.
1. Bearing
Install the bearing into the low clutch drum.
22C&L-SUB30
2. Snap ring
Install the snap ring to the low clutch drum.
23C&L-SUB28
3. Low one-way clutch
Install the low one-way clutch to the low clutch drum.
24C&L-SUB33
NOTE:
The flanged side of the low one-way clutch must face the
outside.
Page 4222 of 4264
7A4-48 UNIT REPAIR (JR405E)
25C&L-SUB27
4. Side plate
Install the side plate.
26C&L-SUB26
5. Snap ring
Install the snap ring to the low clutch drum.
27C&L-SUB58
Attach the low one-way clutch inner race to the low
clutch drum in the opposite direction of normal position.
Rotate the one-way clutch inner race clockwise. I
t
should turn smoothly with little resistance.
Rotate the low one-way clutch inner race
counterclockwise.
It should immediately lock (rotation is impossible).
If it does not, check the low one-way clutch installation
direction.
Inspect and replace the low one-way clutch if required.
Remove the low one-way clutch inner race.
Reverse the low clutch drum.
28C&L-SUB32
6. Low clutch piston
Install new seal rings to the low clutch piston.
Page 4223 of 4264
UNIT REPAIR (JR405E) 7A4-49
29C&L-SUB22
Install the low clutch piston to the low clutch drum.
30C&L-SUB21
7. Return spring
Install the return spring to the low clutch piston.
31C&L-SUB20
8. Cancel cover
Carefully center the cancel cover and install it.
NOTE:
If the cancel cover is not centered, the cover outside seal
ring gum will be forced into the low clutch piston area
where it will be damaged.
32C&L-SUB18
Install the spring compressor to the low clutch.
Spring compressor: 5-8840-2759-0
33C&L-SUB19
9. Snap ring
Use the spring compressor to carefully force the cancel
cover down.
NOTE:
To avoid damage to the return spring, use only as much
force as is required to press the cancel cover into place.
Install new snap ring to the low clutch drum.
Page 4224 of 4264

7A4-50 UNIT REPAIR (JR405E)
34C&L-SUB15
10.Dish plate, drive plate, driven plate, and retaining plate
Install the low clutch dish plate (1), the 2 mm thick driven
plate (2), the 7 drive plate (3), the other 6 driven plates (4),
and the retaining plate (5).
NOTE:
Dish plate side with the identification mark must face the
driven plate.
248L300006
11.Snap ring
Install the snap ring to the low clutch drum.
NOTE:
It is careful in the attachment direction of dish plate.
35C&L-SUB38
36CLEAR06
Inspection
Insert the low one-way clutch inner race to the low clutch
drum.
Force compressed air (392 kPa/4.0 kg/cm
2) through the
oil passages of the low one-way clutch inner race to
check low clutch operation.
If the low clutch does not operate, the seal rings may be
damaged or the parts may have been installed in the
wrong order.
Measure the clearance between the low clutch retaining
plate and the snap ring.
If the clearance is outside the specified range, replace
the existing plate with a new plate of the proper size
(thickness).
Low clutch retaining plate and snap ring clearance:
0.9~1.3 mm (0.035~0.051 in)
Available low clutch retaining plate thicknesses
3.8 mm (0.150 in)
4.0 mm (0.157 in)