1.Characteristics of the drive shaft
Toyota vehicles utilize a front-mounted engine and front-wheel drive system, with the front wheels serving as both steering and propelling components. The half shafts and wheel hubs are connected via constant velocity universal joints, allowing for greater turning angles.
The tripod constant speed universal joint at the transmission end allows for a certain degree of axial movement to accommodate variations in drive shaft length during operation. The universal joint located near the end of the ring on Toyota’s drive shaft is a non-sliding CV joint type, designed for optimal performance and durability.
The fastening clamp of the drive shaft sheath can be replaced by a shrinking clamp ring, and the ABS tooth ring cannot be replaced.
2.Transmission shaft construction
1-Left drive shaft.
2-Right drive shaft
3- Protective sleeve assembly (wheel side)
4- Protective sleeve assembly (transmission side)
5- Bearing
6- bearing bushing
7- Drive shaft bearing bolt
8- right guide plate
9- Hexagon head lock nut
10- nut
11- nut lock plate
12- Cotter pin
13- Clamp
3.Drive shaft maintenance
3.Common faults and maintenance points
（1） drive shaft oil leakage (wheel side and transmission side)
Fault phenomenon: Sputtering drive shaft grease is observed on the wheel edge and transmission side chassis of the vehicle. Failure cause: The dust cover of the drive shaft (wheel side and transmission side) has been damaged.
Troubleshooting: Replace the faulty drive shaft dust cover.
（2） Abnormal noise emitted from the drive shaft and bearing.
Fault phenomenon: Abnormal sounds are produced by the drive shaft and bearing during vehicle operation.
Cause of failure: ① the transmission shaft universal joint is loose; ② Bearing failure or too tight assembly.
Troubleshooting: ① Replace the drive shaft universal joint; ② Replace bearings (tighten according to assembly requirements).
（3）Drive shaft vibration:
Fault phenomenon: In the process of driving, the drive shaft cannot balance rotation, vibration, causing vibration or noise of the car body.
Fault causes: ① the transmission shaft body is bent or distorted, unbalanced; ② Spline wear loose; ③ Universal-joint wear loose.
Troubleshooting: Replace the drive shaft.
2. Maintenance operation
（1）disassembly – drive shaft
Disassemble Figure 1
Disassemble Figure 2
Disassemble Figure 3
Disassemble Figure 4
Disassemble Figure 5
Disassemble Figure 6
Turn off the engine, use the lift bar [3] to lift the front of the vehicle and remove the front wheel. Drain transmission oil. Install hub locking tool [1]
Remove:
Locking pin 1; Locking pad 2; Drive shaft nut; Hub locking tool [1].
Remove the nut 3.
Remove the nut 4 and separate the transverse stabilizer bar connecting rod.
Use the knuckle ball pin release lever [2] to remove the knuckle ball pin and remove the protective Loosen nut 5, turn the bolt 1/4 turn to release the bearing from the housing, and remove the drive shaft.
（2）Installation
figure 1
figure 2
Replace the left and right oil seals of the differential using the left drive shaft seal mounting tool [4] and the right drive shaft seal mounting tool [5].
Apply lubricating oil before installation.
Lubricate the outer bearing support.
Please be advised:
Install the drive shaft in the intermediate bearing support; Load the bearing into the bearing seat; Engage with the differential; The drive shaft is loaded into the hub. Adjust stud offset 6 with bearing outer seat and tighten nut 5.
Continue the installation in the reverse order of the removal operations.
Note: Use new nuts 3, 4
（3） Tightening torque
Nut 5:17.5n ·m.
Nuts 4:40 N·m.
Nut 3:40 N·m.
Rotating shaft nut: 320N·m.
Wheel fastening bolt: 90N·m.
3. Repair the drive shaft
Note: Wheel side and transmission side dust cover can be replaced separately.
Wheel side dust cover replacement
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Remove clamp 1 and 2.
Note: When there is no positioning slot “a”, the drive shaft guard position should be marked.
Use inertial separator [6] and shaft head to separate the threaded sleeve [7] and remove cage 3.
Remove:
Baffle ring 4; Drive shaft dust cover 5; Remove grease from the drive shaft oil seal.
Installation:
New shield 5; New stop ring 4.
Put a clamp over the retainer 6 for mounting the CV joint.
Install ball cage 3 on the drive shaft with the inertial separator [6] and the shaft head separating thread sleeve [7]. Remove clamp 6. Add 160g grease into the dust cover.
Put five dust caps on the CV joint.
Note: Keeping the dust cover in position on the drive shaft, fix the dust cover in the positioning slot “a” on the drive shaft or at the mark made when removing it.
Install new clamp 1 and 2 with clamp pliers [5].
Transmission side dust cover replacement.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure9
Figure 10
Figure 11
Measure size A.
Fold down clamp 7 and 8.
Vertically remove triple pin 9, spring 10 and butterfly washer 11.
Note: Roller and needle roller, do not lose.
Use three-pin sleeve if necessary [9].
Remove grease from drive shaft oil seal, do not use solvent.
Remove the support plate [3] with the three-pin shaft and press out the three-pin bearing 12.
Remove the dust cover 13 and put the new dust cover 13 on the drive shaft.
Install the three-pin bearing using the three-pin shaft mounting sleeve and hand hammer.
Install butterfly washer 11, spring 10 and CV joint 9, cover the ball cage with protective cover.
Position the dust cover according to size A.
Install new clamp 7 and 8 with clamp pliers [1].
Use separator [2] to remove stop ring 15 and shaft 14 in sequence.
Install bearing 14 and stop ring 15 in sequence using the bearing and its sleeve mounting tube [8].
