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A340E(Others) AUTOMATIC TRANSMISSIONCOMPONENT PARTS -
AT-38
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 work-
bench 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 compo-
nent group. If a component group cannot 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:
DEXRON® II
GENERAL CLEANING NOTES:
1. All disassembled parts should be washed clean and 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 accidentally spray-
ing automatic transmission fluid or kerosene in 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 the correct order to allow efficient inspection, repairs,
and reassembly.
2. When disassembling a valve body, be sure to keep each valve together with the corresponding spring.
3. New discs for the brakes and clutches that are to be used for replacement must be soaked in transmis-
sion fluid for at least 15 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 be replaced.
5. Check thrust bearings and races for wear or damage. Replace if necessary.
6. Use petroleum jelly to keep parts in place.
AX0AF-0D
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A340E(Others) AUTOMATIC TRANSMISSIONOIL PUMP -
AT-39
OIL PUMP
COMPONENTS
OIL PUMP DISASSEMBLY
1. USE TORQUE CONVERTER CLUTCH AS WORK
STAND
Place the oil pump body on the torque converter clutch.
2. REMOVE OIL SEAL RINGS
Remove the 2 oil seal rings from the stator shaft back
side.
AX0AL-0A
AT0FV-02
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A340E(Others) AUTOMATIC TRANSMISSIONOIL PUMP -
AT-40
3. REMOVE THRUST WASHER FROM STATOR SHAFT
BACK SIDE
4. REMOVE STATOR SHAFT
(a) Remove the 13 bolts, and then remove the stator shaft
from the oil pump body.
(b) Remove the oil pump body from the torque converter
clutch.
5. REMOVE OIL PUMP DRIVE GEAR AND DRIVEN GEAR
6. REMOVE OIL SEAL
Pry off the oil seal with a screwdriver.
OIL PUMP INSPECTION
1. 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.)
AX0AN-0C
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A340E(Others) AUTOMATIC TRANSMISSIONOIL PUMP -
AT-42
4. 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.
5. CHECK STATOR SHAFT BUSHINGS
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.
OIL PUMP ASSEMBLY
1. INSTALL FRONT OIL SEAL
(a) Using SST and a hammer, install a new oil seal. The seal
end should be flush with the outer edge of the pump body.
SST 09350-30020 (09351-32140)
(b) Coat the oil seal lip with MP grease.
2. INSTALL DRIVEN GEAR AND DRIVE GEAR TO OIL
PUMP BODY
(a) Place the oil pump body on the torque converter clutch.
(b) Coat the driven gear and drive gear with ATF.
(c) Install the driven gear and drive gear.
3. INSTALL STATOR SHAFT TO PUMP BODY
(a) Align the stator shaft with each bolt hole.
(b) Tighten the 13 bolts.
Torque: 10 N´m (100 kgf´cm, 7 ft´lbf)
AX0AP-0C
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A340E(Others) AUTOMATIC TRANSMISSIONOVERDRIVE DIRECT CLUTCH -
AT-44
OVERDRIVE DIRECT CLUTCH
COMPONENTS
OVERDRIVE PLANETARY GEAR,
OVERDRIVE DIRECT CLUTCH AND
OVERDRIVE ONE-WAY CLUTCH
DISASSEMBLY
1. CHECK OPERATION OF ONE-WAY CLUTCH
Hold the O/D direct clutch drum and turn the input shaft.
Check that the input shaft must be able to turn freely
clockwise and locks counterclockwise.
2. REMOVE OVERDRIVE DIRECT CLUTCH ASSEMBLY
FROM OVERDRIVE PLANETARY GEAR
AT05B-04
AT05C-08
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A340E(Others) AUTOMATIC TRANSMISSIONOVERDRIVE DIRECT CLUTCH -
AT-45
3. CHECK PISTON STROKE OF OVERDRIVE DIRECT
CLUTCH
(a) Place the oil pump onto the torque converter clutch, 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 while applying and releasing com-
pressed air (392-785 kPa, 4-8 kgf/cm
2, 57-114 psi).
SST 09350-30020 (09350-06120)
Piston stroke:
SUPRA:
1.45-1.70 mm (0.0571-0.0669 in.)
OTHERS:
1.85-2.15 mm (0.0728-0.0846 in.)
If the values are non-standard, inspect the discs.
4. REMOVE FLANGE, PLATES AND DISCS
(a) Using a screwdriver, remove the snap ring from the O/D
direct clutch drum.
(b) Remove the flange, plates and 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 clutch and
then place the O/D direct clutch onto the oil pump.
(b) Hold the O/D direct clutch piston with hand, apply com-
pressed air to the oil pump to remove the O/D direct clutch
piston.
(c) Remove the O/D direct clutch piston.
(d) Remove the 2 O-rings from the piston.
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A340E(Others) AUTOMATIC TRANSMISSIONOVERDRIVE DIRECT CLUTCH -
AT-46
7. REMOVE RING GEAR FLANGE
(a) Using a screwdriver, remove the snap ring.
(b) Remove the ring gear flange.
8. REMOVE RETAINING PLATE
(a) Using a screwdriver, remove the snap ring.
(b) Remove the retaining plate.
9. REMOVE OVERDRIVE ONE- WAY CLUTCH WITH
OUTER RACE
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A340E(Others) AUTOMATIC TRANSMISSIONOVERDRIVE DIRECT CLUTCH -
AT-47
10. REMOVE ONE-WAY CLUTCH FROM OUTER RACE
11. REMOVE THRUST WASHER