Toyota Automatic Transmission A340 Series. Repair Manual — part 7
AT1636
AT8225
AT8236
AT8334
SST
(i)
Insert SST behind No. 1 brake piston and gradu-
ally lift it out of the transmission case.
SST
09350−30020 (09350−07090)
(j)
Remove the two O−rings from No. 1 piston.
40. REMOVE MANUAL VALVE LEVER, SHAFT AND OIL
SEALS
(a)
Using a chisel, cut off the spacer and remove it
from the shaft.
(b)
Using a pin punch, drive out the pin.
(c)
Pull the manual valve lever shaft out through the
case and remove the lever.
(d)
Using a screwdriver, remove the two oil seals.
AT−45
−
AUTOMATIC TRANSMISSION (A340E)
Removal of Component Parts
COMPONENT PARTS
General Notes
The instructions here are organized so that you work on only one component group at a time.
This will help avoid confusion from similar−looking parts of different subassemblies being on
your workbench at the same time.
The component groups are inspected and repaired from the converter housing side.
As much as possible, complete the inspection, repair and assembly before proceeding to the next
component group. If a component group can not be assembled because parts are being ordered,
be sure to keep all parts of that group in a separate container while proceeding with disassembly,
inspection, repair and assembly of other component groups.
Recommended ATF: DEXRONR II
GENERAL CLEANING NOTES:
1.
All disassembled parts should be washed clean, with any fluid passages and holes blown
through with compressed air.
2.
When using compressed air to dry parts, always aim away from yourself to prevent acciden-
tally spraying automatic transmission fluid or kerosene on your face.
3.
The recommended automatic transmission fluid or kerosene should be used for cleaning.
PARTS ARRANGEMENT:
1.
After cleaning, the parts should be arranged in proper order to allow efficient inspection, re-
pairs, and reassembly.
2.
When disassembling a valve body, be sure to keep each valve together with the correspond-
ing spring.
3.
New discs for the brakes and clutches that are to be used for replacement must be soaked
in transmission fluid for at least fifteen minutes before assembly.
GENERAL ASSEMBLY:
1.
All oil seal rings, clutch discs, clutch plates, rotating parts, and sliding surfaces should be
coated with transmission fluid prior to reassembly.
2.
All gaskets and rubber O−rings should be replaced.
3.
Make sure that the ends of a snap ring are not aligned with one of the cutouts and are
installed in the groove correctly.
4.
If a worn bushing is to be replaced, the subassembly containing that bushing must also be
replaced.
5.
Check thrust bearings and races for wear or damage. Replace if necessary.
6.
Use petroleum jelly to keep parts in place.
AT−46
−
AUTOMATIC TRANSMISSION
Component Parts (General Notes)
AT8413
Torque Converter
AT8412
AT5461
♦ Non−reusable part
kg−cm (ft−lb, N−m)
: Specified torque
♦ Oil Seal
♦ O − Ring
Oil Seal Ring
Oil Pump Drive Gear
Oil Pump Driven Gear
Stator Shaft
100 (7, 10)
Oil Pump Body
Oil Pump
COMPONENTS
DISASSEMBLY OF OIL PUMP
1.
USE TORQUE CONVERTER AS WORK STAND
Place the oil pump body on the torque converter.
2.
REMOVE OIL SEAL RINGS
Remove the two oil seal rings.
−
AUTOMATIC TRANSMISSION
Component Parts (Oil Pump)
AT−47
AT0153
Driven Gear
AT0154
AT0155
AT5271
AT8411
3.
REMOVE STATOR SHAFT
(a)
Remove the thirteen bolts, and then remove the
stator shaft from the oil pump body.
(b)
Remove the oil pump body from the torque con-
verter.
4.
CHECK BODY CLEARANCE OF DRIVEN GEAR
Push the driven gear to one side of the body.
Using a feeler gauge, measure the clearance.
Standard body clearance: 0.07 − 0.15 mm
(0.0028 − 0.0059 in.)
Maximum body clearance: 0.3 mm (0.012 in.)
If the body clearance is greater than the maximum, re-
place the drive gear, driven gear or pump body.
5.
CHECK TIP CLEARANCE OF DRIVEN GEAR
Measure between the driven gear teeth and the cres-
cent−shaped part of the pump body.
Standard tip clearance:
0.11 − 0.14 mm
(0.0043 − 0.0055 in.)
Maximum tip clearance:
0.3 mm (0.012 in.)
If the tip clearance is greater than the maximum, re-
place the drive gear, driven gear or pump body.
6.
CHECK SIDE CLEARANCE OF BOTH GEARS
Using a steel straight edge and feeler gauge, measure
the side clearance of both gears.
Standard side clearance:
0.02 − 0.05 mm
(0.0008 − 0.0020 in.)
Maximum side clearance: 0.1 mm (0.004 in.)
If the side clearance is greater than the maximum, re-
place the drive gear, driven gear or pump body.
7.
REMOVE OIL PUMP DRIVE GEAR AND DRIVEN
GEAR
AT−48
−
AUTOMATIC TRANSMISSION
Component Parts (Oil Pump)
AT5357
AT5152
AT5153
AT5154
SST
8.
REMOVE OIL SEAL
(a)
Pry off the oil seal with a screwdriver.
(b)
Using SST, install a new oil seal.
The oil seal end should be flush with the outer edge of
the pump body.
SST
09350−30020 (09351−32140)
(c)
Coat the oil seal lip with MP grease.
CHECK OIL PUMP BUSHING
1.
CHECK OIL PUMP BODY BUSHING
Using a dial indicator, measure the inside diameter of
the oil pump body bushing.
Maximum inside diameter: 38.19 mm (1.5035 in.)
If the inside diameter is greater than the maximum, re-
place the oil pump body.
2.
CHECK STATOR SHAFT BUSHING
Using a dial indicator, measure the inside diameter of
the stator shaft bushing.
Maximum inside diameter:
Front side: 21.58 mm (0.8496 in.)
Rear side: 27.08 mm (1.0661 in.)
If the inside diameter is greater than the maximum, re-
place the stator shaft.
−
AUTOMATIC TRANSMISSION
Component Parts (Oil Pump)
AT−49
AT8409
AT8410
AT8408
AT5358
ASSEMBLY OF OIL PUMP
1.
INSTALL DRIVEN GEAR AND DRIVE GEAR TO OIL
PUMP BODY
(a)
Place the oil pump body on the torque converter.
(b)
Coat the driven gear and drive gear with ATF.
(c)
Install the driven gear and drive gear.
2.
INSTALL STATOR SHAFT TO OIL PUMP BODY
(a)
Align the stator shaft with each bolt hole.
(b)
Tighten the thirteen bolts.
Torque: 100 kg−cm (7 ft−lb, 10 N−m)
3.
INSTALL OIL SEAL RINGS
(a)
Coat the two oil seal rings with ATF.
(b)
Contract the oil seal rings as shown, and install
them onto the stator shaft.
NOTICE: Do not spread the ring ends too much.
HINT: After installing the oil seal rings, check that they
rotate smoothly.
4.
CHECK OIL PUMP DRIVE GEAR ROTATION
Make sure the drive gear rotates smoothly.
AT−50
−
AUTOMATIC TRANSMISSION
Component Parts (Oil Pump)
AT8130
AT3150
♦ Non−reusable part
O/D Planetary
Ring Gear
Snap Ring
Race
Ring Gear
Flange
Snap Ring
O/D One−Way
Clutch
Retaining
Plate
One−Way Clutch
Outer Race
Bearing
Bearing
O/D Planetary Gear
Thrust Washer
♦ O−Ring
Snap Ring
Plate
Snap Ring
Race
Piston Return Spring
O/D Direct Clutch Piston
Ex. A340F
O/D Direct Clutch Drum
Flange
Disc
AT8138
Hold
Turn
Lock
Free
Overdrive Planetary Gear, Overdrive Direct Clutch and
Overdrive One−Way Clutch
COMPONENTS
DISASSEMBLY OF OVERDRIVE PLANETARY
GEAR, OVERDRIVE DIRECT CLUTCH AND
OVERDRIVE ONE−WAY CLUTCH
1.
CHECK OPERATION OF ONE−WAY CLUTCH
Hold the O/D direct clutch drum and turn the input shaft.
The input shaft turns freely clockwise and locks counter-
clockwise.
2.
REMOVE OVERDRIVE DIRECT CLUTCH ASSEMBLY
FROM OVERDRIVE PLANETARY GEAR
−
AUTOMATIC TRANSMISSION
Component Parts (Overdrive Planetary Gear, Overdrive
Direct Clutch and Overdrive One−Way Clutch)
AT−51
AT4448
Vinyl Tape
SST
AT8131
AT8132
SST
AT3151
AT8140
3.
CHECK PISTON STROKE OF OVERDRIVE DIRECT
CLUTCH
(a)
Place the oil pump onto the torque converter, and
then place the O/D direct clutch assembly onto
the oil pump.
(b)
Using SST and a dial indicator, measure the O/D
direct clutch piston stroke applying and releasing
the compressed air (4 − 8 kg /cm
2
, 57 − 114 psi or
392−785 kPa) as shown.
SST
09350−30020 (09350−06120)
Piston stroke:
22R−E: 1.77 − 2.07 mm (0.0697 − 0.0815 in.)
Others: 1.85 − 2.15 mm (0.0728 − 0.0846 in.)
If the values are nonstandard, inspect the discs.
4.
REMOVE FLANGE, PLATE(S) AND DISC(S)
(a)
Remove the snap ring from the O/D direct clutch
drum.
(b)
Remove the flange, plates and discs.
HINT:
22R−E: One flange, one plate and one disc
Others: One flange, two plates and two discs
5.
REMOVE PISTON RETURN SPRING
(a)
Place SST on the spring retainer and compress
the return spring with a shop press.
SST
09350−30020 (09350−07040)
(b)
Using snap ring pliers, remove the snap ring.
(c)
Remove the piston return spring.
6.
REMOVE OVERDRIVE DIRECT CLUTCH PISTON
(a)
Place the oil pump onto the torque converter and
then place the O/D direct clutch onto the oil pump.
(b)
Hold the O/D direct clutch piston with hand, apply
compressed air to the oil pump to remove the O/D
direct clutch piston.
(c)
Remove the O/D direct clutch piston.
(d)
Remove the two O−rings from the piston.
AT−52
−
AUTOMATIC TRANSMISSION
Component Parts (Overdrive Planetary Gear, Overdrive
Direct Clutch and Overdrive One−Way Clutch)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст