Toyota Automatic Transmission A340 Series. Repair Manual — part 8

AT8134

AT8135

AT8146

AT8147

AT8133

7.

REMOVE RING GEAR FLANGE
(a)

Remove the snap ring.

(b)

Remove the ring gear flange.

8.

REMOVE RETAINING PLATE
(a)

Remove the snap ring.

(b)

Remove the retaining plate.

9.

REMOVE OVERDRIVE ONE−WAY CLUTCH WITH

OUTER RACE

−

AUTOMATIC TRANSMISSION

Component Parts (Overdrive Planetary Gear, Overdrive

Direct Clutch and Overdrive One−Way Clutch)

AT−53

AT8148

AT8150

AT8035

AT1987

Printed

Number

AT4449

10. REMOVE ONE−WAY CLUTCH FROM OUTER RACE

11. REMOVE THRUST WASHER

INSPECTION OF OVERDRIVE PLANETARY GEAR

AND OVERDRIVE DIRECT CLUTCH

1.

INSPECT DISC, PLATE AND FLANGE
Check to see if the sliding surface of the disc, plate and

flange are worn or burnt. If necessary, replace them.

HINT:

S

If the lining of the disc is peeling off or discolored,

or even if parts of the printed numbers are de-

faced, replace discs.

S

Before assembling new discs, soak them in ATF

for at least fifteen minutes.

2.

CHECK OVERDRIVE DIRECT CLUTCH PISTON
(a)

Check that check ball is free by shaking the piston.

(b)

Check that the valve does not leak by applying low

pressure compressed air.

3.

CHECK OVERDRIVE DIRECT CLUTCH DRUM

BUSHINGS
Using a dial indicator, measure the inside diameter of

the clutch drum bushings.

Maximum inside diameter: 27.11 mm (1.0673 in.)

If the inside diameter is greater than the maximum, re-

place the clutch drum.

AT−54

−

AUTOMATIC TRANSMISSION

Component Parts (Overdrive Planetary Gear, Overdrive

Direct Clutch and Overdrive One−Way Clutch)

AT8148

Front

AT4451

Flanged Side

AT1638

Flanged Side

AT8143

AT4450

4.

CHECK OVERDRIVE PLANETARY GEAR BUSHING
Using a dial indicator, measure the inside diameter of

the planetary gear bushing.

Maximum inside diameter: 11.27 mm (0.4437 in.)

If the inside diameter is greater than the maximum, re-

place the planetary gear.

5.

MEASURE PLANETARY PINION GEAR THRUST

CLEARANCE
Using a feeler gauge, measure the planetary pinion

gear thrust clearance:

Standard clearance:

0.20 − 0.60 mm

(0.0079 − 0.0236 in.)

Maximum clearance:

1.00 mm (0.0394 in.)

If the clearance is greater than the maximum, replace

the planetary gear assembly.

ASSEMBLY OF OVERDRIVE PLANETARY GEAR,

OVERDRIVE DIRECT CLUTCH AND OVERDRIVE

ONE−WAY CLUTCH

1.

INSTALL THRUST WASHER TO OVERDRIVE PLAN-

ETARY GEAR
Install the thrust washer to the overdrive planetary gear,

the grooved side facing upward.

2.

INSTALL OVERDRIVE ONE−WAY CLUTCH
(a)

Install the one−way clutch into the outer race, the

flanged side of the one−way clutch facing upward.

(b)

Install the overdrive one−way clutch with the outer

race to the overdrive planetary gear.

−

AUTOMATIC TRANSMISSION

Component Parts (Overdrive Planetary Gear, Overdrive

Direct Clutch and Overdrive One−Way Clutch)

AT−55

AT8135

AT8133

AT8134

AT8144

AT8146

3.

INSTALL RETAINING PLATE
(a)

Install the retaining plate.

(b)

Install the snap ring.

4.

INSTALL RING GEAR FLANGE TO OVERDRIVE

PLANETARY RING GEAR
(a)

Install the ring gear flange as shown.

(b)

Install the snap ring.

5.

INSTALL OVERDRIVE DIRECT CLUTCH PISTON
(a)

Coat new O−rings with ATF and install them on the

O/D direct clutch piston.

(b)

Being careful not to damage the O−rings, press in

the direct clutch piston into the clutch drum with

both hands.

AT−56

−

AUTOMATIC TRANSMISSION

Component Parts (Overdrive Planetary Gear, Overdrive

Direct Clutch and Overdrive One−Way Clutch)

AT4452 AT4659

Retainer

Claw

SST

AT1639

Ex. 22R−E

AT8155

AT8131

AT8145

6.

INSTALL PISTON RETURN SPRING
(a)

Install the piston return spring to the piston.

(b)

Place SST on the spring retainer, and compress

the return spring with a shop press.

SST

09350−30020 (09350−07040)

(c)

Install the snap ring with a screwdriver. Be sure

the end gap of the snap ring is not aligned with

the spring retainer claw.

7.

INSTALL PLATE(S), DISC(S) AND FLANGE
(a)

Install the plates and discs.

Install in order: P = Plate D = Disc

22R−E: P−D

Others: P−D−P−D

(b)

Install the flange, the flat end facing downward.

(c)

Install the snap ring.

−

AUTOMATIC TRANSMISSION

Component Parts (Overdrive Planetary Gear, Overdrive

Direct Clutch and Overdrive One−Way Clutch)

AT−57

AT4448

Vinyl Tape

SST

AT8139

AT8138

Hold

Turn

Lock

Free

No.

Thickness

No.

Thickness

16

3.6 (0.142)

19

3.3 (0.130)

17

3.5 (0.138)

20

3.2 (0.126)

18

3.4 (0.134)

21

3.1 (0.122)

AT8140

Flange thickness

mm (in.)

8.

CHECK PISTON STROKE OF OVERDRIVE DIRECT

CLUTCH
(a)

Place the oil pump onto the torque converter,

and then place the O/D direct clutch assembly

onto the oil pump.

(b)

Using SST and a dial indicator, measure the over-

drive direct clutch piston stroke applying and releas-

ing the compressed air (4 − 8 kg/cm

2

, 57 − 114 psi

or 392 − 785 kPa) as shown.

SST

09350−30020 (09350−06120)

Piston stroke:

22R−E: 1.77 − 2.07 mm (0.0697 − 0.0815 in.)

Others: 1.85 − 2.15 mm (0.0728 − 0.0846 in.)

If the piston stroke is less than the limit, parts may have

been assembled incorrectly, check and reassemble again.

If the piston stroke is nonstandard, select another flange.

HINT: There are six different thicknesses for the flange.

9.

INSTALL OVERDRIVE DIRECT CLUTCH ASSEMBLY
(a)

Align the flukes of discs in the direct clutch.

(b)

Install the direct clutch assembly onto the O/D

planetary gear.

10. CHECK OPERATION OF ONE−WAY CLUTCH

Hold the O/D direct clutch drum and turn the input shaft.

The input shaft turns freely clockwise and locks counter-

clockwise.

AT−58

−

AUTOMATIC TRANSMISSION

Component Parts (Overdrive Planetary Gear, Overdrive

Direct Clutch and Overdrive One−Way Clutch)

AT8451

AT6389

♦ Non−reusable part

Clutch Drum

Thrust Bearing

Snap Ring

Race

Race

Oil Seal Ring

Bearing

O/D Support

Piston Return Spring

♦ O−Ring

O/D Brake Piston

SUPRA: 7M−GTE

CRESSIDA

Disc

S SUPRA

S CRESSIDA

Flange

Snap Ring

Disc

Plate

S TRUCK

S 4 RUNNER

Flange

Snap Ring

Plate

3VZ−E

Overdrive Brake

COMPONENTS

DISASSEMBLY OF OVERDRIVE BRAKE

1.

CHECK OVERDRIVE BRAKE PISTON MOVEMENT
(a)

Place the O/D support assembly onto the direct

clutch assembly.

−

AUTOMATIC TRANSMISSION

Component Parts (Overdrive Brake)

AT−59

AT8158

AT8444

SST

AT8249

AT8159

AT8149

(b)

Apply compressed air into the oil passage as

shown, and be sure that the O/D brake piston

moves smoothly.

2.

REMOVE CLUTCH DRUM THRUST WASHER FROM

OVERDRIVE SUPPORT

3.

REMOVE PISTON RETURN SPRING
(a)

Place SST on the spring retainer, and compress

the return spring with a shop press.

SST

09350−30020 (09350−07030)

(b)

Remove the snap ring with a screwdriver.

(c)

Remove the piston return spring.

4.

REMOVE OVERDRIVE BRAKE PISTON
(a)

Place the O/D support onto the direct clutch as-

sembly.

(b)

Hold the O/D brake piston so it does not slant,

and apply compressed air into the passage to

remove the O/D brake piston.

(c)

Remove the O/D brake piston.

(d)

Remove the two O−rings from the piston.

AT−60

−

AUTOMATIC TRANSMISSION

Component Parts (Overdrive Brake)