Toyota Automatic Transmission A340 Series. Repair Manual - part 6

AT8226

SST

AT5044

AT8214

AT8227

AT8215

SST

(b)

Using SST, measure the stroke applying the com-

pressed air (4 − 8 kg /cm

2

, 57 − 114 psi or 392 −

785 kPa) as shown in the figure.

SST

09240−00020

Piston rod stroke: 1.5 − 3.0 mm (0.059 − 0.118 in.)

If the values are nonstandard, inspect the brake band.

(See page  AT−76)

24. REMOVE SECOND COAST BRAKE COVER, PISTON

ASSEMBLY AND SPRING
(a)

Using SST, remove the snap ring.

SST

09350−30020 (09350−07060)

(b)

Applying compressed air to the oil hole, remove

the second coast brake cover, piston assembly

and spring.

(c)

Remove the two O−rings from the cover.

25. REMOVE OVERDRIVE SUPPORT ASSEMBLY

(a)

Remove the bearing and race.

(b)

Remove the two bolts holding the overdrive sup-

port assembly to the case.

AT−37

−

AUTOMATIC TRANSMISSION (A340E)

Removal of Component Parts

AT8425

SST

AT8157

AT8424

AT3149

AT8426

SST

(c)

Using SST, remove the snap ring.

SST

09350−30020 (09350−07060)

(d)

Using SST, remove the overdrive support assembly.

SST

09350−30020 (09350−07020)

(e)

Remove the race.

26. REMOVE DIRECT CLUTCH WITH FORWARD CLUTCH

(a)

Remove the direct clutch with forward clutch from

the case.

(b)

Remove the two bearings and race.

AT−38

−

AUTOMATIC TRANSMISSION (A340E)

Removal of Component Parts

AT8423

AT8175

AT5111

AT8229

AT8402

27. REMOVE SECOND COAST BRAKE BAND

(a)

Remove the E−ring from the pin.

(b)

Remove the pin from the brake band.

(c)

Remove the second coast brake band from the

case.

For the method of inspection, refer to  AT−76.

28. REMOVE FRONT PLANETARY GEAR UNIT

(a)

Remove the race.

(b)

Remove the front planetary ring gear from the

case.

(c)

Remove the bearing and race.

AT−39

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AUTOMATIC TRANSMISSION (A340E)

Removal of Component Parts

AT8230

AT8421

SST

AT8420

AT8186

AT8422

(d)

Remove the race.

(e)

With wooden blocks under the output shaft, stand

the transmission on the output shaft.

(f)

Using SST, remove the snap ring.

SST

09350−30020 (09350−07070)

(g)

Remove the front planetary gear from the case.

(h)

Remove the bearing and race from the front plan-

etary gear.

AT−40

−

AUTOMATIC TRANSMISSION (A340E)

Removal of Component Parts

AT8221

AT8417

AT5103

AT8418

AT8419

29. REMOVE PLANETARY SUN GEAR WITH NO. 1

ONE−WAY CLUTCH

30. CHECK PACK CLEARANCE OF SECOND BRAKE

Using a thickness gauge, measure the clearance be-

tween the snap ring and flange as shown in the figure.

Clearance: 0.62 − 1.98 mm (0.0244 − 0.0780 in.)

If the values are nonstandard, inspect the discs.

(See page  AT−84)

31. REMOVE FLANGE, PLATES AND DISCS OF SEC-

OND BRAKE
(a)

Remove the snap ring.

(b)

Remove the flange, five plates and five discs.

32. REMOVE PARKING LOCK ROD AND PAWL

(a)

Remove the parking lock pawl bracket.

AT−41

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AUTOMATIC TRANSMISSION (A340E)

Removal of Component Parts

AT8223

AT8416

AT4443

AT5120

AT5121

E−Ring

Lock Paul

(b)

Disconnect the parking lock rod from the manual

valve lever.

(c)

Remove the spring, parking lock pawl and shaft.

(d)

Remove the E−ring from the shaft.

33. CHECK PACK CLEARANCE OF FIRST AND 

REVERSE BRAKE
Using a thickness gauge, measure the clearance be-

tween the plate and second brake drum as shown in

the figure.

Clearance:

(7M−GTE)

0.70 − 1.22 mm (0.0276 − 0.0480 in.)

(Others)

0.60 − 1.12 mm (0.0236 − 0.0441 in.)

If the values are nonstandard, inspect the discs.

(See page  AT−86)

34. REMOVE SECOND BRAKE PISTON SLEEVE

35. REMOVE REAR PLANETARY GEAR UNIT WITH

SECOND BRAKE DRUM, FIRST AND REVERSE

BRAKE PACK AND OUTPUT SHAFT
(a)

Using two screwdrivers, remove the snap ring.

AT−42

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AUTOMATIC TRANSMISSION (A340E)

Removal of Component Parts

AT8183

AT8208

AT5107

AT8414

AT8415

(b)

Remove the rear planetary gear, second brake

drum, first and reverse brake pack and output

shaft as an assembly.

(c)

Remove the assembled thrust bearing and race

from the case.

(d)

Remove the second brake drum assembly.

(e)

Remove the flange, plates and discs of the first

and reverse brake.

(7M−GTE)

One flange, seven plates and seven discs

(Others)

One flange, six plates and six discs

For the method of inspection, refer to  AT−86.

36. REMOVE LEAF SPRING

AT−43

−

AUTOMATIC TRANSMISSION (A340E)

Removal of Component Parts

AT4445

AT8336

SST

Snap Ring

AT8335

SST

AT4446

AT4444

37. REMOVE BRAKE DRUM GASKET

Using a screwdriver, remove the gasket.

38. CHECK FIRST AND REVERSE BRAKE PISTONS

MOVING
Make sure the first and reverse brake pistons move

smoothly when applying and releasing the compressed

air into the transmission case.

39. REMOVE COMPONENTS OF FIRST AND REVERSE

BRAKE PISTON
(a)

Set SST on the spring retainer, and compress the

return spring.

SST

09350−30020 (09350−07050)

(b)

Remove the snap ring with snap ring pliers.

(c)

Remove the piston return spring.

(d)

Hold No. 2 first and reverse brake piston with

hand, apply compressed air to transmission case

to remove No. 2 first and reverse brake piston.

(e)

Remove No. 2 first and reverse brake piston.

If the piston does not pop out with compressed air, lift

the piston out with needle−nose pliers.
(f)

Remove the O−ring from No. 2 piston.

(g)

Insert SST behind the reaction sleeve and gradu-

ally lift it out of the transmission case.

SST

09350−30020 (09350−07080)

(h)

Remove the O−ring from the reaction sleeve.

AT−44

−

AUTOMATIC TRANSMISSION (A340E)

Removal of Component Parts