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
−
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
−
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
−
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
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