Toyota Automatic Transmission A340 Series. Repair Manual - part 15

AT8321

Front

1.8 mm

Thick Plate

Side

Disc

Flange

AT8315

AT8404

AT8221

Lock Pawl

Manual

Valve

Lever

Planetary Ring

Gear

AT8240

(e)

Shift the manual valve lever to the P position, and

confirm that the planetary ring gear is correctly

locked up by the lock pawl.

10. INSTALL NO. 1 ONE−WAY CLUTCH

11. INSTALL FLANGE, PLATES AND DISCS OF SEC-

OND BRAKE
(a)

Install the 1.8 mm (0.071 in.) thick plate with the

rounded edge side of the plate facing the disc.

(b)

Install the plates and discs.

Install in order: P = Plate, D = Disc

P−D−P−D−P−D−P−D−P−D

(c)

Install flange with the rounded edge of the flange

facing the disc.

(d)

Install snap ring.

12. 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, check for an improper

installation.

−

AUTOMATIC TRANSMISSION (A340E)

Installation of Component Parts

AT−109

AT8421

SST

AT8318

Thrust

Washer

Inside

Outside

Bearing

35.5 (1.398)

47.7 (1.878)

Race

33.7 (1.327)

47.6 (1.874)

AT3156

Front

AT8311

Inside

Outside

Race

34.3 (1.350)

47.8 (1.882)

AT8420

mm (in.)

13. INSTALL PLANETARY SUN GEAR

While turning the planetary sun gear clockwise, install

it into No. 1 one−way clutch.

HINT: Confirm that the thrust washer is installed cor-

rectly.

14. INSTALL FRONT PLANETARY GEAR

(a)

Coat the bearing and race with petroleum jelly

and install them onto the front planetary gear.

HINT: Bearing and race diameter

(b)

Install the front planetary gear to the sun gear.

(c)

Using SST, install the snap ring.

SST

09350−30020 (09350−07070)

(d)

Remove the wooden blocks under the output shaft.

(e)

Coat the bearing race with petroleum jelly and

install it onto the front planetary gear.

HINT: Race diameter

mm (in.)

AT−110

−

AUTOMATIC TRANSMISSION (A340E)

Installation of Component Parts

AT8231

AT8232

AT8305

Front

AT8307

Front

Inside

Outside

Bearing

26.0 (1.024)

46.7 (1.839)

Race

26.0 (1.024)

48.9 (1.925)

Inside

Outside

Race

26.8 (1.055)

47.0 (1.850)

AT8402

mm (in.)

15. INSTALL SECOND COAST BRAKE BAND

(a)

Install the second coast brake band to the case.

(b)

Install the pin through the brake band.

(c)

Install the E−ring to the pin.

16. INSTALL FRONT PLANETARY RING GEAR TO FOR-

WARD AND DIRECT CLUTCH
(a)

Coat the bearing and race with petroleum jelly

and install them onto the forward clutch.

HINT: Bearing and race diameter

(b)

Coat the race with petroleum jelly and install it

onto the front planetary ring gear.

HINT: Race diameter

mm (in.)

−

AUTOMATIC TRANSMISSION (A340E)

Installation of Component Parts

AT−111

AT8306

Front

AT8235

AT8401

AT8234

Inside

Outside

Bearing

32.6 (1.283)

47.7 (1.878)

Race

30.6 (1.205)

53.6 (2.110)

AT8233

mm (in.)

(c)

Align the flukes of the discs in the forward clutch.

(d)

Align the splines of the front planetary ring gear

with the flukes of the discs and install the front

planetary ring gear to the forward clutch.

17. INSTALL ASSEMBLED DIRECT CLUTCH, FOR-

WARD CLUTCH AND FRONT PLANETARY RING

GEAR INTO CASE
(a)

Coat the bearing and race with petroleum jelly

and install them onto the ring gear.

HINT: Bearing and race diameter

(b)

Install the assembled direct clutch, forward clutch

and front planetary ring gear into the transmission

case.

(c)

Using vernier calipers, measure the distance be-

tween the sun gear input drum and direct clutch

drum as shown in the figure.

Height: 9.8 − 11.8 mm (0.386 − 0.465 in.)

If the values are nonstandard, check for an improper

installation.

AT−112

−

AUTOMATIC TRANSMISSION (A340E)

Installation of Component Parts

AT8226

SST

AT4442

Mark

Piston Rod

AT8215

SST

AT8157

Inside

Outside

Bearing and

race

33.7 (1.327)

47.6 (1.874)

Inside

Outside

Race

36.8 (1.449)

50.9 (2.004)

AT8309

Front

mm (in.)

(d)

Coat the assembled bearing and race with petro-

leum jelly and install it onto the forward clutch.

HINT: Assembled bearing and race diameter

18. INSTALL SECOND COAST BRAKE COVER, PISTON

ASSEMBLY AND SPRING
(a)

Coat two new O−rings with ATF and intall them to

the cover.

(b)

Install the spring, piston assembly and cover to

the case.

(c)

Using SST, install the snap ring.

SST

09350−30020 (09350−07060)

19. CHECK PISTON ROD STROKE OF SECOND COAST

BRAKE
(a)

Place a mark on the second coast brake piston

rod as shown in the figure.

(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.)

20. INSTALL OVERDRIVE SUPPORT ASSEMBLY

(a)

Coat the race with petroleum jelly and install it

onto the overdrive support assembly.

HINT: Race diameter

mm (in.)

−

AUTOMATIC TRANSMISSION (A340E)

Installation of Component Parts

AT−113

AT8481

AT8246

Bolt and

Oil Holes

SST

24 mm (0.94 in.)

SST

Front

AT8316

Disc Side

Flange

Flange

Front

AT8247

(b)

Using two bolts of SST, aim the bolt and oil holes

of the overdrive support toward the valve body

side, and align them with the bolt holes of the

transmission case and insert.

SST

09350−30020 (09350−07020)

(c)

Using SST, install the snap ring as shown in the

figure.

SST

09350−30020 (09350−07060)

(d)

Install and torque the two bolts.

Torque: 260 kg−cm (19 ft−lb, 25 N−m)

21. CHECK OUTPUT SHAFT

(a)

Using a dial indicator, measure the end play of

the output shaft with hand.

End play: 0.27 − 0.86 mm (0.0106 − 00339 in.)

If the values are nonstandard, check for an improper

installation.
(b)

Check to see that output shaft rotates smoothly.

22. INSTALL FLANGES, PLATES AND DISCS OF OVER-

DRIVE BRAKE
(a)

Install the 4.0 mm (0.157 in.) thick flange (flat ring)

with the rounded edge side of the flange facing

the disc.

(b)

Install the plates and discs.

Install in order: P = Plate D = Disc

(7M−GTE)

D−P−D−P−D−P−D−P−D

(Others)

D−P−D−P−D−P−D

(c)

Install the flange (stepped ring) with the flat side of

the flange facing the disc.

AT8312

AT−114

−

AUTOMATIC TRANSMISSION (A340E)

Installation of Component Parts

AT8212

SST

O/D Brake Piston

AT8213

AT8314

Front

No.

Thickness

No.

Thickness

26

3.3 (0.130)

11

3.8 (0.150)

25

3.5 (0.138)

23

3.9 (0.154)

12

3.6 (0.142)

None

4.0 (0.157)

24

3.7 (0.146)

Inside

Outside

Bearing

33.6 (1.323)

50.3 (1.980)

Race

37.1 (1.461)

59.0 (2.323)

AT8427

Flange thickness

mm (in.)

mm (in.)

(d)

Install the snap ring.

23. CHECK PISTON STROKE OF OVERDRIVE BRAKE

(a)

Place SST and a dial indicator onto the overdrive

brake piston as shown in the figure.

SST

09350−30020 (09350−06120)

(b)

Measure the stroke applying and releasing the com-

pressed air (4 − 8 kg/cm

2

, 57 − 114 psi or 392 − 785

kPa) as shown in the figure.

Piston stroke:

(7M−GTE)

1.75 − 2.05 mm (0.0689 − 0.0807 in.)

(Others)

1.40 − 1.70 mm (0.0551 − 0.0669 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 seven different thicknesses for the

flange.

24. REMOVE FLANGE, PLATES AND DISCS OF OVER-

DRIVE BRAKE
(a)

Remove the snap ring.

HINT: Bearing and race diameter

−

AUTOMATIC TRANSMISSION (A340E)

Installation of Component Parts

AT−115

Inside

Outside

Bearing

26.0 (1.024)

46.8 (1.843)

Race

24.2 (0.953)

47.8 (1.882)

AT8320

Front

Inside

Outside

Race

27.1 (1.067)

41.8 (1.646)

D5002

AT8397

AT4470

SST

AT8399

mm (in.)

(b)

Remove the flanges, plates and discs.

(c)

Coat the bearing and race with petroleum jelly and

install them onto the planetary ring gear.

HINT: Bearing and race diameter

(d)

Coat the race with petroleum jelly and install it

onto the planetary ring gear.

HINT: Race diameter

mm (in.)

(e)

Install the overdrive planetary gear with overdrive

direct clutch and one−way clutch.

(f)

Place SST on the transmission case.

SST 09350 − 36010 (09350 − 06090)
(g)

Using calipers, measure distance between the

tops of SST and the clutch drum.

Standard distance: 

15.5 − 16.5 mm

(0.610 − 0.650 in.)

If the values are nonstandard, check for an improper

installation.

AT−116

−

AUTOMATIC TRANSMISSION (A340E)

Installation of Component Parts