Toyota Automatic Transmission A340 Series. Repair Manual — part 33
AT7958
Front
AT7959
E7226
Front
Inside
Outside
Bearing and race
30.5 (1.201)
48.0 (1.890)
AT4932
Inside
Outside
Bearing and race
19.0 (0.748)
45.0 (1.772)
AT4933
mm (in.)
mm (in.)
30. INSTALL SUN GEAR TO TRANSFER DIRECT CLUTCH
(a)
Coat the assembled bearing and race with petro-
leum jelly and install it onto the sun gear.
HINT: Assembled bearing and race diameter.
(b)
Install the sun gear into the transfer direct clutch.
HINT: Mesh the splines of the sun gear with the flukes
of the discs by rotating and pushing the sun gear.
31. INSTALL TRANSFER DIRECT CLUTCH WITH SUN
GEAR
(a)
Install the transfer direct clutch with the sun gear.
(b)
Coat the assembled bearing and race with petro-
leum jelly and install it onto the sun gear.
HINT: Assembled bearing and race diameter
(c)
Install the snap ring.
−
AUTOMATIC TRANSMISSION (A340H)
Installation of Component Parts
AT−253
AT7971
Front
AT7960
AT7961
Inside
Outside
Race
23.1 (0.909)
45.0 (1.772)
Inside
Outside
Race
36.3 (1.429)
53.9 (2.122)
AT3171
Flange
AT7972
Front
32. INSTALL OUTPUT SHAFT WITH PLANETARY RING
GEAR
(a)
Coat the races with petroleum jelly and install
them onto the planetary gear and planetary ring
gear.
HINT: Race diameter
mm (in.)
mm (in.)
(b)
Install the output shaft with the planetary ring gear.
33. INSTALL FLANGES, PLATES, DISCS AND CUSHION
PLATE OF TRANSFER LOW SPEED BRAKE
(a)
Install the front flange to the case.
(b)
Install the plates and discs.
Install in order: P = Plate D = Disc
D−P−D−P−D−P−D−P−D−P−D−P−D
(c)
Install the rear flange.
AT−254
−
AUTOMATIC TRANSMISSION (A340H)
Installation of Component Parts
AT7963
AT7914
Front
AT7964
AT7965
Inside
Outside
Bearing and race
38.0 (1.496)
57.3 (2.256)
AT8031
mm (in.)
(d)
Install the cushion plate, the rounded end facing
rearward.
34. INSTALL PISTON RETURN SPRING OF TRANSFER
LOW SPEED BRAKE
35. INSTALL TRANSFER CENTER SUPPORT
(a)
Coat the assembled bearing and race with petro-
leum jelly and install it onto the center support.
HINT: Assembled bearing and race diameter
(b)
Install the center support to the case.
HINT: Align the oil holes and bolt hole of the center sup-
port with those of the case side and insert.
(c)
Pushing the center support forward, install the snap
ring.
−
AUTOMATIC TRANSMISSION (A340H)
Installation of Component Parts
AT−255
AT7945
AT7944
AT4935
0.4 mm
(0.016 in.)
3 mm
(0.12 in.)
3.8 (0.150)
4.4 (0.173)
4.0 (0.157)
4.6 (0.181)
4.2 (0.165)
AT4934
AT8030
Flange thickness
mm (in.)
36. CHECK PACK CLEARANCE OF TRANSFER LOW
SPEED BRAKE
Using a feeler gauge, measure the clearance between
the snap ring and flange as shown in the figure.
Clearance: 0.91 − 2.10 mm (0.0358 − 0.0827 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 five different thicknesses for the flange.
37. INSTALL TRANSFER FRONT DRIVE CLUTCH
(a)
Install the snap ring to the output shaft.
(b)
Install the front drive clutch.
(c)
Install the snap ring.
38. INSTALL FRONT OUTPUT SHAFT
Install the front output shaft into the transfer front drive
clutch.
HINT: Mesh the splines of the front output shaft with
the flukes of the discs by rotating and pushing the front
output shaft.
39. INSTALL TRANSFER CHAIN FRONT CASE
(a)
Clean contacting surfaces of any residual packing
material using gasoline or alcohol.
(b)
Apply seal packing to the transfer case as shown in
the figure.
Seal packing: Part No. 08826 − 00090, THREE BOND
1281 or equivalent
AT−256
−
AUTOMATIC TRANSMISSION (A340H)
Installation of Component Parts
AT4914
AT4917
AT4937
Front
AT7908
1.0 − 1.2 mm
(0.039 − 0.047 in.)
AT4936
(c)
Install the transfer chain front case to the transfer
case.
(d)
Apply sealant to the threads of the bolts.
Sealant:
Part No. 08833 − 00070, THREE BOND
1324 or equivalent
(e)
Install and torque the bolts.
Torque: 345 kg−cm (25 ft−lb, 34 N−m)
40. INSTALL TRANSFER CHAIN OIL RECEIVER
(a)
Apply sealant to the threads of the bolts.
Sealant:
Part No. 08833 − 00070, THREE BOND
1324 or equivalent
(b)
Install the oil receiver to the transfer chain front
case.
(c)
Install and torque the bolts.
Torque: 100 kg−cm (7 ft−lb, 10 N−m)
41. INSTALL DRIVE CHAIN WITH DRIVE SPROCKET
AND DRIVEN SHAFT
(a)
Install the chain with the drive sprocket and driven
shaft.
(b)
Install the snap ring.
42. INSTALL TRANSFER CHAIN REAR CASE
(a)
Clean contacting surfaces of any residual packing
material using gasoline or alcohol.
(b)
Apply seal packing to the chain rear case as shown
in the figure.
Seal packing: Part No. 08826 − 00090, THREE BOND
1281 or equivalent
−
AUTOMATIC TRANSMISSION (A340H)
Installation of Component Parts
AT−257
AT7913
2 − 3 mm
(0.08 − 0.12 in.)
AT7942
AT7981
Front
AT7966
0.4 mm
(0.016 in.)
3 mm (0.12 in.)
AT7943
35 (1.38)
45
(1.77)
45
(1.77)
35 (1.38)
mm (in.)
(c)
Install the chain rear case to the front case.
(d)
Install and torque the bolts.
Torque: 345 kg−cm (25 ft−lb, 34 N−m)
HINT: Each bolt length (mm, in.) is indicated in the figure.
43. INSTALL OIL PUMP ASSEMBLY
(a)
Clean contacting surfaces of any residual packing
material using gasoline or alcohol.
(b)
Apply seal packing to the chain rear case as
shown in the figure.
Seal packing:
Part No. 08826 − 00090, THREE
BOND 1281 or equivalent
(c)
Install the oil pump assembly and torque the bolts.
Torque: 160 kg−cm (12 ft−lb, 16 N−rn)
44. INSTALL SPEEDOMETER DRIVE GEAR
45. INSTALL EXTENSION HOUSING
(a)
Clean contacting surfaces of any residual packing
material using gasoline or alcohol.
(b)
Apply seal packing to the extension housing as
shown in the figure.
Seal packing: Part No. 08833 − 00090, THREE BOND
1131, LOCTITE 518 or equivalent
AT−258
−
AUTOMATIC TRANSMISSION (A340H)
Installation of Component Parts
AT7967
SST
AT4285
E7074
AT4938
45
(1.77)
mm (in.)
45
(1.77)
48
(1.89)
AT4231
(c)
Install the extension housing to the chain rear
case.
Torque: 345 kg−cm (25 ft−lb, 34 N−m)
HINT: Each bolt length (mm, in.) is indicated in the fig-
ure.
46. INSTALL REAR COMPANION FLANGE
(a)
Coat a new O−ring with ATF and install it to the
companion flange inner.
(b)
Install the companion flange and washer to the
shaft.
(c)
Using SST to hold the flange, torque a new nut.
SST
09330−00021
Torque: 1,250 kg−cm 190 ft−lb, 123 N−m)
(d)
Using a hammer and punch, stake the nut.
47. INSTALL FRONT COMPANION FLANGE
Install the front companion flange in the same way as the
rear companion flange.
48. INDIVIDUAL PISTON OPERATION INSPECTION
Check for the sound of operation while applying com-
pressed air into the oil hole indicated in the figure.
(1)
Transfer direct clutch
(2)
Transfer low speed brake
(3)
Transfer front drive clutch
If there is no noise, disassemble and check the installa-
tion condition of the parts.
49. INSTALL THROTTLE CABLE
(a)
Coat a new O−ring with ATF and install it to the
cable.
(b)
Install the cable to the case.
−
AUTOMATIC TRANSMISSION (A340H)
Installation of Component Parts
AT−259
AT8477
AT4847
Check Ball
Body
E7256
AT7941
23 (0.91)
23 (0.91)
32 (1.26)
32
(1.26)
23 (0.91) 32 (1.26)
mm (in.)
Spring
Free length
Outer
diameter
Color
(1)
B
2
70.5 (2.776)
19.7 (0.776)
Yellow
(2)
C
2
Outer
70.3 (2.768)
20.2 (0.795)
Pink
(3)
Inner
42.1 (1.657)
14.7 (0.579)
Pink
(4)
B
0
66.0 (2.598)
16.1 (0.634)
Purple
(5)
C
0
Outer
74.6 (2.937)
20.9 (0.823)
Orange
(6)
Inner
46.0 (1.811)
14.0 (0.551)
Yellow
AT8476
50. INSTALL ACCUMULATOR SPRINGS, PISTONS AND
PINS
(a)
Coat new O−rings with ATF and install them to
the pistons.
(b)
Install the five springs, four accumulator pistons
to the bore as shown in the figure.
HINT: The pistons are marked in relief with either C−0,
B−0, C−2, B−2 to differentiate between them.
S Spring
mm (in.)
51. INSTALL CHECK BALL BODY AND SPRING
52. INSTALL TRANSMISSION VALVE BODY
(a)
Align the groove of the manual valve to the pin of
the lever.
(b)
Connect the throttle cable to the cam.
(c)
Confirm the springs into the accumulator pistons
are installed correctly.
(d)
Install the sixteen bolts.
HINT: Each bolt length (mm, in.) is indicated in the fig-
ure.
Torque: 100 kg−cm (7 ft−lb, 10 N−m)
AT−260
−
AUTOMATIC TRANSMISSION (A340H)
Installation of Component Parts
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