TOYOTA PREVIA 91-97 REPAIR MANUAL

DRIVE TRAIN 7-17

Fig. 56 Extract the switch from the transmission

5. Unstake the lockwasher.


6. Remove the nut and bolt, then extract the neutral safety switch.


7. Remove the lock washer and grommet.
   To install:


8. Attach the wiring harness to the switch.


9. Insert the neutral safety switch onto the manual valve lever shaft and
   temporarily tighten the adjusting bolt.


10. Install the grommet and a new lock washer. Install and tighten the
    nut to 35 inch Ibs. (4 Nm).


11. Align the neutral basic line and the switch groove, then tighten the
    adjusting bolt to 48 inch Ibs. (5 Nm).


12. Bend the tabs of the lock washer. Make sure you bend at least two of
    the tabs.


13. Lower the vehicle. Test the function of the system.

1996-97 Models

1. Raise and safely support the vehicle.


2. Locate the neutral safety switch on the side of the automatic trans-
   mission.


3. On the 3-speed transmissions, the oil cooler lines may need to be
   disconnected to access the neutral safety switch.


4. Disconnect the wiring harness from the switch.


5. Pry off the lock washer and remove the nut.


6. Unbolt and separate the switch from the transmission.
   To install:


7. Attach the wiring harness to the switch.


8. Position the switch on the transmission and tighten the bolt to 9 ft.
   Ibs. (13 Nm).


9. Install a new lock plate and tighten the nut to 35 inch Ibs. (4 Nm).


10. Stake the nut with the lock plate. Adjust the neutral safety switch.


11. Lower the vehicle. Test the function of the system.

ADJUSTMENT

» See Figure 57

Check that the engine can be started with the shift lever only in the N or
P position, but not in any other positions. If not, carry out the following
adjustment.

1. Loosen the neutral safety switch bolt and set the adjustment shift
   lever to N.


2. Align the groove and neutral basic line.


3. Retain the position and tighten the bolt to 48 inch Ibs. (5 Nm) on
   1991-95 models and 9 ft. Ibs. (13 Nm) on 1996-97 models.

Bolt

Neutral

Basic

Line

Groove

Fig. 57 Alignment of the groove and the neutral basic line

Extension Housing Seal

REMOVAL & INSTALLATION

Remove the driveshaft.

Using a seal puller, extract the seal from the extension housing.

Coat the new seal with transmission fluid. Preferable clean fresh

1.

2.

3.

fluid.

4. Using a seal driver, tap the seal into position as far as it will go. The
   lip of the seal should be flush with the extension housing.


5. Install the driveshaft.

Automatic Transmission Assembly

REMOVAL & INSTALLATION

> See Figure 58

4-Speed Transmissions

1. Disconnect the negative battery terminal from the battery. Wait at
   least 90 seconds after the battery cable is disconnected before working on
   the vehicle if equipped with air bags.


2. If required, remove the air cleaner assembly.


3. Disconnect the transmission throttle cable from the throttle body.


4. Raise and safely support the vehicle.


5. Drain the transmission fluid.


6. Disconnect the wiring harness for the neutral start switch and the
   back-up light switch. If equipped, disconnect the solenoid (overdrive)
   switch wiring at the same location.


7. If equipped, disconnect the oil level gauge.


8. Disconnect the starter wiring at the starter. Remove the mounting
   bolts and the starter from the engine.


9. Make matchmarks on the rear driveshaft flange and the differential
   pinion flange. These marks must be aligned during installation.


10. Unbolt the rear driveshaft flange. If the vehicle has a 2 piece drive-
    shaft, remove the center bearing bracket-to-frame bolts. Remove the drive-
    shaft from the vehicle.


11. Disconnect the speedometer cable (tie it aside). Disconnect the shift
    linkage from the transmission.


12. Disconnect the transmission oil cooler lines at the transmission.


13. Disconnect the exhaust pipe clamp and remove the oil filler tube, as
    required.