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Toyota Automatic Transmission A340 Series. Repair Manual - part 30

AT1867

AT4669

AT1867

AT1931

SST

1.2 − 1.8 mm

AT7979

SST

REMOVE FRONT DRIVE SHAFT BEARING
Using SST and a press, press out the bearing.

SST

09608−12010 (09608−00020, 09608−00040)

REMOVE OIL STRAINER
Remove the four bolts and strainer from the chain rear

case.

ASSEMBLY OF TRANSFER CHAIN REAR CASE

INSTALL OIL STRAINER
(a)

Apply sealant to 2 or 3 threads of the bolt end.

Sealant:

Part No. 08833 − 00070, THREE BOND

1324 or equivalent

(b)

Install the oil strainer with the four bolts.

Torque: 70 kg−cm (61 in.−lb, 6.9 N−m)

INSTALL FRONT DRIVE SHAFT BEARING
Using SST, press in the bearing.

SST

09608−12010 (09608−00020, 09608−00040)

Bearing depth: 1.2 − 1.8 mm (0.047 − 0.071 in.)

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AUTOMATIC TRANSMISSION (A340H)

Component Parts (Transfer Chain Rear Case)

AT−229

AT3302

11.0 − 11.3 mm

SST

0 − +0.3 mm

AT3301

INSTALL FRONT OUTPUT SHAFT BEARING
(a)

Install the bearing to the transfer chain rear case.

(b)

Using snap ring pliers, install the snap ring.

INSTALL FRONT OUTPUT SHAFT OIL SEALS
(a)

Using SST and a hammer, drive in a new rear oil

seal.

SST

09608−32010 and 09608−35014 (09608−06020)

Oil seal depth: 11.0 − 11.3 mm (0.433 − 0.445 in.)
(b)

Using SST and a hammer, drive in a new front oil

seal.

SST

09608−32010 and 09608−35014 (09608−06020)

Oil seal depth: 0 − +0.3 mm (0 − +0.012 in.)
(c)

Coat the oil seal lips with MP grease.

AT−230

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AUTOMATIC TRANSMISSION (A340H)

Component Parts (Transfer Chain Rear Case)

AT8012

: Specified torque

kg−cm (ft−lb, N−m)

100 (7, 10)

Pressure Relief Valve

Spring

Oil Pump Body

Drive Gear

Driven Gear

Plate

Oil Pump Cover

AT1863

AT7980

Transfer Oil Pump

COMPONENTS

DISASSEMBLY OF TRANSFER OIL PUMP

DISASSEMBLE TRANSFER OIL PUMP ASSEMBLY

(a)

Remove the three bolts, oil pump body and plate

from the oil pump cover.

(b)

Remove the pressure relief valve and spring.

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AUTOMATIC TRANSMISSION (A340H)

Component Parts (Transfer Oil Pump)

AT−231

AT1868

AT1869

AT1870

AT1864

(c)

Remove the drive gear and driven gear.

INSPECTION OF TRANSFER OIL PUMP

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.

CHECK TIP CLEARANCE OF DRIVEN GEAR
Measure between the driven gear teeth and the crescent−

shaped part of the pump body.

Standard tip clearance:

0.15 − 0.42 mm

(0.0059 − 0.0165 in.)

Maximum tip clearance:

0.6 mm (0.024 in.)

If the tip clearance is greater than the maximum, replace

the drive gear, driven gear or pump body.

CHECK SIDE CLEARANCE OF BOTH GEARS
Using a steel straight edge and a feeler gauge, measure

the side clearance of both gears.

Standard side clearance:

0.04 − 0.15 mm

(0.0016 − 0.0059 in.)

Maximum side clearance: 0.3 mm (0.012 in.)

If the side clearance is greater than the maximum, re-

place the drive gear, driven gear or pump body.

ASSEMBLY OF TRANSFER OIL PUMP

ASSEMBLE TRANSFER OIL PUMP ASSEMBLY

(a)

Coat the driven gear and drive gear with ATF.

(b)

Install the driven gear and drive gear.

AT−232

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AUTOMATIC TRANSMISSION (A340H)

Component Parts (Transfer Oil Pump)

AT1863

AT7980

(c)

Install the pressure relief valve and spring.

(d)

Install the plate and oil pump body, and torque the

three bolts.

Torque: 100 kg−cm (7 ft−lb, 10 N−m)

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AUTOMATIC TRANSMISSION (A340H)

Component Parts (Transfer Oil Pump)

AT−233

AT1440

SST

AT1443

SST

2.7 − 3.3 mm

AT4931

♦ Non−reusable part

Extension Housing

♦ Oil Seal

Transfer Extension Housing

COMPONENTS

INSPECTION OF TRANSFER EXTENSION

HOUSING

HINT: If the bearing is worn, replace the extension

housing assembly.

IF NECESSARY, REPLACE OIL SEAL

(a)

Using SST, remove the oil seal.

SST

09308−00010

(b)

Using SST and a press, install a new oil seal to

the extension housing.

SST

09608−35014 (09608−06020, 09608−06100)

Oil seal depth: 2.7 − 3.3 mm (0.106 − 0.130 in.)
(c)

Coat the oil seal lip with MP grease.

AT−234

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AUTOMATIC TRANSMISSION (A340H)

Component Parts (Transfer Extension Housing)

AT3303

INSTALLATION OF COMPONENT PARTS (A340H)

(See pages AT−168 to 171)
Disassembly, inspection and assembly of each component group have been indicated in the preced-

ing chapter. Before assembly, make sure again that all component groups are assembled correctly.

If something wrong is found in a certain component group during assembly, inspect and repair this

group immediately.

Recommended ATF: DEXRONR II

GENERAL NOTES:

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.

Before assembling new clutch discs, soak them in automatic transmission fluid for at least

fifteen minutes.

Apply automatic transmission fluid on sliding or rotating surfaces of parts before assembly.

Use petroleum jelly to keep small parts in their place.

Do not use adhesive cements on gaskets and similar parts.

When assembling the transmission, be sure to use new gaskets and O−rings.

Dry all parts with compressed air − never use shop rags.

When working with FIPG material, you must observe the following.

Using a razor blade and gasket scraper, remove all the old packing (FIPG) material

from the gasket surfaces.

Thoroughly clean all components to remove all the loose material.

Clean both sealing surfaces with a non−residue solvent.

Parts must be assembled within 10 minutes of application. Otherwise, the packing

(FIPG) material must be removed and reapplied.

There are 2 types of seal packing on the A340H transmission. There are not interchangeable

and care should be taken in selecting them.
A: Part No. 08826 − 00090, THREE BOND 1281 or equivalent

B: Part No. 08833 − 00090, THREE BOND 1131, LOCTITE 518 or equivalent

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AUTOMATIC TRANSMISSION (A340H)

Installation of Component Parts

AT−235

AT6331

mm (in.)

* Assembled type bearing and race

(TRANSMISSION)

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−236

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AUTOMATIC TRANSMISSION (A340H)

Installation of Component Parts

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