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
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