Toyota Automatic Transmission A340 Series. Repair Manual — part 19
AT5779
AT5780
AT5781
AT5215
AT8186
(h)
Remove the bearing and race from the front
planetary gear.
34. REMOVE PLANETARY SUN GEAR WITH NO. 1
ONE−WAY CLUTCH
35. CHECK PACK CLEARANCE OF SECOND BRAKE
Using a feeler gauge, measure the clearance between
the snap ring and flange as shown in the figure.
Clearance: 0.50 − 1.76 mm (0.0197 − 0.0693 in.)
If the values are nonstandard, inspect the discs.
(See page AT−84)
36. REMOVE FLANGE, PLATES AND DISCS OF SECOND
BRAKE
(a)
Remove the snap ring.
(b)
Remove the flange, plates and discs as a set.
−
AUTOMATIC TRANSMISSION (A340F)
Removal of Component Parts
AT−141
AT5782
AT5460
SST
AT5783
AT5784
AT8223
37. CHECK PACK CLEARANCE OF FIRST AND REVERSE
BRAKE
Using a feeler gauge, measure the clearance between
the plate and second brake drum as shown in the figure.
Clearance: 0.50 − 1.02 mm (0.0197 − 0.0402 in.)
38. REMOVE SECOND BRAKE PISTON SLEEVE
39. REMOVE REAR PLANETARY GEAR UNIT WITH SEC-
OND BRAKE DRUM, FIRST AND REVERSE BRAKE
PACK AND OUTPUT SHAFT
(a)
Using SST and screwdriver, remove the snap ring.
SST
09350−30020 (09350−07060)
(b)
Install the output shaft.
(c)
Remove the rear planetary gear, second brake
drum, first and reverse brake pack and output shaft
as an assembly.
(d)
Remove the assembled thrust bearing and race
from the case.
AT−142
−
AUTOMATIC TRANSMISSION (A340F)
Removal of Component Parts
AT4444
AT5258
AT8183
AT8208
AT5107
Leaf
Spring
(e)
Remove the second brake drum assembly.
(f)
Remove the cushion plate, flange, plates and
discs of the first and reverse brake.
For method of inspection, refer to AT−86.
40. REMOVE LEAF SPRING
41. REMOVE BRAKE DRUM GASKET
42. CHECK PISTON STROKE OF FIRST AND REVERSE
BRAKE
Make sure the first and reverse brake pistons move
smoothly when applying and releasing the compressed
air into the transmission case.
−
AUTOMATIC TRANSMISSION (A340F)
Removal of Component Parts
AT−143
AT5375
AT8335
SST
AT8334
SST
AT8336
SST
Snap Ring
43. 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 the 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)
Install SST behind the reaction sleeve and gradually
lift it out on the transmission case.
SST
09350−30020 (09350−07080)
(h)
Remove the O−ring from the reaction sleeve.
(i)
Install SST behind No. 1 brake piston and gradually
lift it out of the transmission case.
SST
09350−30020 (09350−07090)
(j)
Remove the two O−rings from No. 1 piston.
AT−144
−
AUTOMATIC TRANSMISSION (A340F)
Removal of Component Parts
INSTALLATION OF COMPONENT PARTS (A340F)
(See pages AT−126 to AT−127)
Disassembly, inspection and assembly of each component group have been indicated in the pre-
ceding chapter. Before assembly, make sure again that all component groups are assembled cor-
rectly.
If something wrong is found in a certain component group during assembly, inspect and repair
this group immediately.
Recommended ATF: DEXRONR II
GENERAL NOTES:
1.
The automatic transmission is composed of highly precision−finished parts, necessitating
careful inspection before assembly because even a small nick could cause fluid leakage or
affect performance.
2.
Before assembling new clutch discs, soak them in automatic transmission fluid for at least
fifteen minutes.
3.
Apply automatic transmission fluid on sliding or rotating surfaces of parts before assembly.
4.
Use petroleum jelly to keep small parts in their place.
5.
Do not use adhesive cements on gaskets and similar parts.
6.
When assembling the transmission, be sure to use new gaskets and O−rings.
7.
Dry all parts with compressed air − never use shop rags.
8.
When working with FIPG material, you must observe the following.
S
Using a razor blade and gasket scraper, remove all the old packing (FIPG) material
from the gasket surface.
S
Thoroughly clean all components to remove all the loose material.
S
Clean both sealing surfaces with a non−residue solvent.
S
Parts must be assembled within 10 minutes of application. Otherwise, the packing
(FIPG) material must be removed and reapplied.
−
AUTOMATIC TRANSMISSION (A340F)
Installation of Component Parts
AT−145
AT6331
* Assembled bearing and race
Front Bearing Race
Thrust Bearing
Rear Bearing Race
Inner Diameter
Outer Diameter
Inner Diameter
Outer Diameter
Inner Diameter
Outer Diameter
28.1 (1.106)
47.3 (1.862)
28.9 (1.138)
50.2 (1.976)
27.1 (1.067)
41.8 (1.646)
26.0 (1.024)
46.8 (1.843)
24.2 (0.953)
47.8 (1.882)
37.1 (1.461)
59.0 (2.323)
33.6 (1.323)
50.3 (1.980)
36.8 (1.449)
50.9 (2.004)
33.7 (1.327)
47.6 (1.874)
26.0 (1.024)
48.9 (1.925)
26.0 (1.024)
46.7 (1.839)
26.8 (1.055)
47.0 (1.850)
30.6 (1.205)
53.6 (2.110)
32.6 (1.283)
47.7 (1.878)
34.3 (1.350)
47.8 (1.882)
33.7 (1.327)
47.6 (1.874)
35.5 (1.398)
47.7 (1.878)
28.8 (1.134)
44.8 (1.764)
30.1 (1.185)
44.7 (1.760)
27.8 (1.094)
44.8 (1.764)
39.2 (1.543)
57.7 (2.272)
INSTALLATION POSITION AND DIRECTION OF BEARINGS AND RACES
AT−146
−
AUTOMATIC TRANSMISSION (A340F)
Installation of Component Parts
AT8209
Reaction Sleeve
No. 1 Piston
AT4467
AT8303
Retainer Claw
SST
Snap Ring
AT8333
No. 2 Piston
AT5429
1.
INSTALL COMPONENTS OF FIRST AND REVERSE
BRAKE PISTON
(a)
Coat three O−rings with ATF.
(b)
Install the two O−rings on No. 1 piston.
(c)
Install the O−ring on the reaction sleeve.
(d)
Install No. 1 piston to the reaction sleeve.
(e)
Coat a new O−ring with ATF and install it on No. 2
piston.
(f)
Install No. 1 piston with the reaction sleeve onto
No. 2 piston.
(g)
Align the teeth of No. 2 piston into the proper
grooves.
(h)
Being careful not to damage the O−rings, press in
No. 2 and No. 1 first and reverse brake pistons into
the transmission case.
(i)
Place the piston return spring onto No. 2 piston.
(j)
Set SST as shown, and compress the return
spring with SST.
SST
09350−30020 (09350−07050)
(k)
Install the snap ring with a screwdriver. Be sure
the end gap of the snap ring is not aligned with
the spring retainer claw.
−
AUTOMATIC TRANSMISSION (A340F)
Installation of Component Parts
AT−147
AT5107
Leaf
Spring
AT8208
AT8183
AT5784
Inside
Outside
Bearing and
race
39.2 (1.543)
57.7 (2.272)
AT5890
mm (in.)
2.
CHECK PISTON STROKE OF FIRST AND REVERSE
BRAKE
Make sure the first and reverse brake pistons move
smoothly when applying and releasing the compressed
air into the transmission case.
3.
INSTALL LEAF SPRING
4.
INSTALL REAR PLANETARY GEAR UNIT WITH SEC-
OND BRAKE DRUM, FIRST AND REVERSE BRAKE
PACK AND OUTPUT SHAFT
(a)
Install one plate.
(b)
Install the flange, the rounded edge facing forward.
(c)
Re−install the plates and discs.
Install in order: P = Plate D = Disc
D−P−D−P−D−P−D−P−D−P
(d)
Install the second brake drum assembly.
(e)
Coat the assembled bearing and race with petro-
leum jelly and install it onto the case.
HINT: Assembled bearing and race diameter
AT−148
−
AUTOMATIC TRANSMISSION (A340F)
Installation of Component Parts
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