Page 3897 of 4264

UNIT REPAIR (AW30–40LE) 7A4–89
6. Remove the O-ring from first and reverse brake
piston No.2.
7. Remove the reaction sleeve.
Insert special tool behind the reaction sleeve and
gradually lift it out of the transmission case.
Reaction sleeve puller: J–37236
RUW 37A SH00 330 1
8. Remove the O-ring from reaction sleeve.
9. Remove the first and reverse brake piston No.1.
Insert special tool behind the first and reverse brake
piston No.1 and gradually lift it out of the
transmission case.
Piston puller: J–37237
RUW 37A SH00 340 1
10. Remove the O-rings from first and reverse brake
pistion No.1.
Reassembly
1. Coat three new O-rings with ATF.
Install the two O-rings on the No.1 piston.
2. Install the O-ring on the reaction sleeve.
3. Install the first and reverse brake piston No.1 to the
reaction sleeve.
24 6RY 0 0018
4. Coat a new O-ring with ATF and install it on the first
and reverse brake piston No.2.
5. Install the first and reverse brake piston No.1 with
reaction sleeve onto the first and reverse brake
piston No.2.
24 6RY 0 0019
Page 3898 of 4264
7A4–90 UNIT REPAIR (AW30–40LE)
6. Align the teeth of the first and reverse brake piston
No.2 into the proper grooves.
Being careful not to damage the O-rings, press in
the first and reverse brake piston No.2 with No.1
into the transmission case.
24 6RY 0 002 0
7. Place piston return spring onto first and reverse
brake piston No.2.
24 6RY 0 002 1
8. Set special tool as shown, and compress the return
spring with special tool.
Spring compressor: J–25048
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.
24 7RY 0 0002
9. Check first and reverse brake piston movement.
Make sure the first and reverse brake piston moves
smoothly when applying and releasing the
compressed air into the transmission case.
24 6RY 0 0022
Page 3899 of 4264
UNIT REPAIR (AW30–40LE) 7A4–91
10. Coat the assembled bearing and race with
petroleum jelly.
Install the assembled bearing and race facing the
bearing side upward.
Bearing and race diameter (Reference)
24 7RY 0 004 3
Inside diameter 39.38 mm (1.550 in)
Outside diameter 58.15 mm (2.289 in)
Page 3900 of 4264
7A4–92 UNIT REPAIR (AW30–40LE)
Transmission Valve Body assembly
Disassembled View
2 40R20 0039
E nd O FCallo ut
Legend
(1) Detent spring
(2) Manual shift valve
(3) Upper valve body
(4) No.1 gasket (Upper valve body side)(5) Valve body plate
(6) Clamp
(7) Pressure control solenoid
(8) No.2 gasket (Lower valve body side)
(9) Lower valve body
Page 3901 of 4264
UNIT REPAIR (AW30–40LE) 7A4–93
Disassembly
1. Remove detent spring from valve body.
2 40R20 004 0
2. Remove the manual shift valve.
3. Remove the upper valve body.
4. Remove the no.1 gasket (Upper valve body side).
5. Remove the valve body plate.
Turn over assembly and remove thirty bolts.
2 44R20 004 9
6. Remove the clamp.7. Remove the pressure control solenoid.
Hold the valve body plate to the upper valve body.
Lift off upper valve body and plate as a single unit.
NOTE: Be careful that the check balls and strainers do
not fall out.
2 44R20 0061
8. Remove the no.2 gasket (Lower valve body side).
9. Remove the lower valve body.
Reassembly
1. Position a new No.1 gasket (1) on upper valve body.
Align the No.1 gasket at each bolt hole.
2. Position valve body plate (2) on No.1 gasket (1).
Align the plate at each bolt hole.
3. Position a new No.2 gasket (3) on valve body plate
(2).
Align the No.2 gasket at each bolt hole.
2 44R20 0073
Page 3902 of 4264
7A4–94 UNIT REPAIR (AW30–40LE)
4. Place upper valve body with plate and gaskets on
top of lower valve body.
Align each bolt hole and gasket in the valve body.
2 44R20 007 4
5. Install the pressure control solenoid and clamp.
6. Install thirty bolts to upper valve body.
Each bolt is indicated in the figure.
Torque: 6.4 N·m (57Ibin)
2 44R20 0050
7. Install manual shift valve.
Length (mm) Quantity
A207
B2812
C4011
Page 3903 of 4264
UNIT REPAIR (AW30–40LE) 7A4–95
8. Install detent spring.
Torque: 10 N·m (87Ibin)
2 40R20 004 0
Page 3904 of 4264
7A4–96 UNIT REPAIR (AW30–40LE)
Lower Valve Body
Cross Section
RUW 37A M F00 1901