Toyota Automatic Transmission A340 Series. Repair Manual - part 23

AT4844

AT4283

AT4845

AT4282

AT8380

5.

REMOVE TRANSMISSION AND TRANSFER FLUID

TEMPERATURE SENSORS
(a)

Remove the temperature sensors.

(b)

Remove the O−ring from both sensors.

6.

REMOVE TRANSFER OIL COOLER TUBES
(a)

Remove the two bolts.

(b)

Remove the tube clamp and bracket.

(c)

Remove the two oil cooler tubes.

7.

REMOVE TRANSFER SIDE UNIONS
(a)

Remove the two unions.

(b)

Remove the O−ring from both unions.

−

AUTOMATIC TRANSMISSION (A340H)

Removal of Component Parts

AT−173

AT4434

AT7939

AT4230

AT4435

AT4433

8.

REMOVE SPEEDOMETER DRIVEN GEAR
(a)

Remove the bolt and lock plate.

(b)

Pull out the sleeve.

(c)

Remove the clip and pull out the driven gear from

the sleeve.

(d)

Remove the O−ring from the sleeve.

9.

REMOVE SPEED SENSOR
(a)

Disconnect the connector.

(b)

Remove the speed sensor.

(c)

Remove the O−ring from it.

10. REMOVE TRANSFER CONTROL SHAFT LEVER

11. REMOVE TRANSFER POSITION SWITCH

(a)

Unstake the lock washer.

(b)

Remove the nut and bolt, and then remove the

transfer position switch.

(c)

Remove the lock washer and grommet.

12. REMOVE TRANSMISSION HOUSING

(a)

Remove the six bolts.

(b)

Remove the transmission housing.

AT−174

−

AUTOMATIC TRANSMISSION (A340H)

Removal of Component Parts

AT3168

SST

AT5067

AT4906

SST

AT0103

E7058

13. REMOVE TRANSMISSION OIL PAN

NOTICE: Do not turn the transmission over as this will

contaminate the valve body with any foreign matter at

the bottom of the pan.
(a)

Remove the nineteen bolts.

(b)

Install the blade of SST between the transmission

case and oil pan, cut off applied sealer.

SST

09032−00100

NOTICE: Be careful not to damage the oil pan flange.
(c)

Remove pan by lifting the transmission case.

14. REMOVE TRANSFER OIL PAN

(a)

Remove the eleven bolts.

(b)

Install the blade of SST between the transfer case

and oil pan, cut off applied sealer.

SST

09032−00100

NOTICE: Be careful not to damage the oil pan flange.
(c)

Remove the transfer oil pan.

15. EXAMINE PARTICLES IN PANS

Remove the magnets and use them to collect steel par-

ticles.

Carefully look at the foreign matter and particles in the

pans and on the magnets to anticipate the type of wear

you will find in the transmission and transfer:

Steel (magnetic)

bearing, gear and clutch 

. . . . . . . . 

plate wear

Brass (non−magnetic)

bushing wear

. . . 

−

AUTOMATIC TRANSMISSION (A340H)

Removal of Component Parts

AT−175

AT4280

AT4908

AT8028

AT4668

AT4907

w/ A.D.D.

16. REMOVE TRANSFER VALVE BODY AND SOLENOID

WIRING
(a)

Disconnect the connectors from No. 4 solenoid

and transfer pressure switch.

(b)

Remove the six bolts and valve body.

(c)

Remove the solenoid wiring stopper plate.

(d)

Pull out the solenoid wiring from the transfer case.

(e)

Remove the O−ring from the grommet.

17. REMOVE PARKING LOCK PAWL BRACKET

18. REMOVE OIL STRAINER AND GASKETS

(a)

Remove the eleven bolts holding the oil strainer to

the oil strainer case.

(b)

Remove the oil strainer and gasket.

AT−176

−

AUTOMATIC TRANSMISSION (A340H)

Removal of Component Parts

AT4846

AT1354

AT5066

AT7941

AT4909

(c)

Remove the five bolts and oil strainer case.

(d)

Remove the two gaskets from the case.

19. REMOVE OIL TUBES

Pry up both tube ends with a large screwdriver and re-

move the three tubes.

20. REMOVE TRANSMISSION SOLENOID WIRING

(a)

Disconnect the three connectors from No. 1, No. 2

and lock−up solenoids.

(b)

Remove the stopper plate from the case.

(c)

Pull out the solenoid wiring from the transmission

case.

(d)

Remove the O−ring from the grommet.

21. REMOVE TRANSMISSION VALVE BODY

(a)

Remove the sixteen bolts.

−

AUTOMATIC TRANSMISSION (A340H)

Removal of Component Parts

AT−177

AT4847

AT4910

AT4911

AT5062

E7069

(b)

Disconnect the throttle cable from the cam and

remove the valve body.

22. REMOVE CHECK BALL BODY, ACCUMULATOR

SPRINGS, PINS AND PISTONS
(a)

Remove the check ball body and spring.

(b)

Remove the two springs from the C

0

 accumulator

piston.

(c)

Applying compressed air to the oil hole, remove

the B

2

 and C

2

 accumulator pistons and three

springs.

(d)

Applying compressed air to the oil hole, remove

the B

0

 accumulator piston and spring.

AT−178

−

AUTOMATIC TRANSMISSION (A340H)

Removal of Component Parts

AT4228

SST

E7079

AT4912

E7077

E7074

(e)

Applying compressed air to the oil hole, remove

the C

0

 accumulator piston.

(f)

Remove the O−rings from each piston.

23. REMOVE THROTTLE CABLE

(a)

Remove the retaining bolt and pull out the throttle

cable.

(b)

Remove the O−ring from the cable.

24. REMOVE REAR COMPANION FLANGE

(a)

Using a hammer and chisel, loosen the staked

part of the nut.

(b)

Using SST to hold the flange, remove the nut and

washer.

SST

09330−00021

(c)

Remove the companion flange.

(d)

Remove the O−ring from the companion flange

inner.

25. REMOVE FRONT COMPANION FLANGE

Remove the front companion flange in the same way as

the rear companion flange.

26. REMOVE TRANSFER EXTENSION HOUSING

(a)

Remove the six bolts.

(b)

Separate the extension housing.

−

AUTOMATIC TRANSMISSION (A340H)

Removal of Component Parts

AT−179

AT7942

AT7943

AT4913

AT4914

AT7888

27. REMOVE SPEEDOMETER DRIVE GEAR

28. REMOVE OIL PUMP ASSEMBLY

(a)

Remove the five bolts.

(b)

Separate the oil pump assembly.

29. REMOVE TRANSFER CHAIN REAR CASE

(a)

Remove the eleven bolts.

(b)

Using a plastic hammer, separate the transfer

chain rear case from the transfer chain front case.

30. REMOVE DRIVE CHAIN WITH DRIVE SPROCKET

AND DRIVEN SHAFT
(a)

Remove the snap ring.

AT−180

−

AUTOMATIC TRANSMISSION (A340H)

Removal of Component Parts