Drive Pinion Shaft Assembly
Drive Pinion Shaft AssemblyREMOVAL
1. Remove the transmission assembly from vehicle.
2. Pull out the torque converter assembly.
3. Remove the transmission harness connector from stay.
4. Disconnect the air breather hose.
5. Remove the oil charge pipe.
6. Remove the ATF filter inlet and outlet pipes.
7. Separate the converter case and transmission case part.
8. Remove the drive pinion shaft mounting bolt, and then remove the drive shaft assembly from oil pump cover.
9. Remove the oil pump cover from AT main case.
INSTALLATION
1. Assemble the drive pinion assembly to oil pump cover.
NOTE: Be careful not to bend the shim.
Tightening torque: 70 Nm (7.1 kgf-cm, 51.6 ft. lbs.)
2. Adjust the tooth contact between drive pinion shaft assembly and front differential side gear.
3. Combine the converter case with transmission case.
4. Install the transmission harness connector to the stay.
5. Install the ATF filter pipe.
6. Install the oil charge pipe with O-ring.
7. Install the torque converter assembly.
8. Install the transmission assembly into vehicle.
DISASSEMBLY
1. Remove the caulking part of lock nut, and then remove the lock nut with holding rear spline part of the shaft using ST1 and ST2. Pull out the drive pinion collar.
ST1 18667AA010 HOLDER
ST2 499787700 WRENCH
ST3 499787500 ADAPTER
2. Remove the O-ring.
3. Separate the rear roller bearing and outer race from the shaft using press.
4. Separate the front roller bearing from the shaft using press and ST.
ST 498517000 REPLACER
ASSEMBLY
1. Measure the dimension A of drive pinion shaft.
ST 398643600 GAUGE
2. Using a press, press-fit the new roller bearing into specified position.
NOTE: If excessive force is applied to roller bearing, the roller bearing will not turn easily.
3. After fitting a new O-ring to the shaft, attach the drive pinion collar to shaft.
4. Install the lock washer to drive pinion shaft in proper direction.
5. Tighten new lock nuts using ST1, ST2 and ST3.
Calculate the lock washer and lock nut specifications using following formula.
T2 = L2/(L1 + L2) x T1
T1: 116 Nm (11.8 kgf-cm, 85.3 ft. lbs.)
[Required torque setting]
T2: Tightening torque
L1: ST2 length 0.072 m (2.83 inch)
L2: Torque wrench length
Example:
ST1 18667AA010 HOLDER
ST2 499787700 WRENCH
ST3 499787500 ADAPTER
NOTE: Install the ST2 to torque wrench as straight as possible.
6. Measure the starting torque of bearing. Make sure the starting torque is within the specified range. If the torque is not within specified range, replace the roller bearing.
Starting torque: 7.6-38.1 N (0.776-3.88 kgs, 1.7-8.6 lbs.)
7. Stake the caulking of lock nut at two points.
8. Measure the dimension B of drive pinion shaft.
ST 398643600 GAUGE
9. Calculate the thickness t (mm) of drive pinion shim.
t= 6.5 + 0.0625 - (B-A)
10. Select three or less shims from following table.
INSPECTION
^ Make sure that all component parts are free of scratch, hole and other faults.
^ Adjust the teeth alignment.
ADJUSTMENT
1. Remove the liquid gasket completely from mating surfaces.
2. Install the converter case to oil pump cover, and secure them with tightening four bolts evenly.
NOTE: Use an old gasket or aluminum washer so as not to damage the mating surface of housing.
Tightening torque: 41 Nm (4.2 kgf-cm, 30.4 ft. lbs.)
3. Rotate the drive pinion several times using ST1 and ST2.
ST1 18667AA010 HOLDER
ST2 499787700 WRENCH
4. Adjust the backlash between drive pinion and hypoid driven gear.
5. Apply red lead evenly to the surfaces of three or four teeth on hypoid driven gear. Rotate the drive pinion in the leftward and rightward for several times. Remove the oil pump cover, and check the tooth contact pattern.
If the tooth contact is improper, readjust the backlash or shim thickness.
^ Correct tooth contact
Checking item: Tooth contact pattern is slightly shifted toward to toe side under no-load rotation. [When loaded, contact pattern moves toward heel.]
^ Face contact
Checking item: Backlash is too large. Contact pattern
Corrective action: Increase thickness of drive pinion height adjusting shim in order to bring drive pinion close to hypoid driven gear.
^ Flank contact
Checking item: Backlash is too small. Contact pattern
Corrective action: Reduce thickness of drive pinion height adjusting shim in order to bring drive pinion away from hypoid driven gear.
^ Toe contact (inside end contact)
Checking item: Contact areas are too small Contact pattern
Corrective action: Reduce thickness of drive pinion height adjusting shim in order to bring drive pinion away from hypoid driven -tear.
^ Heel contact (outside end contact)
Checking item: Contact areas are too small Contact pattern
Corrective action: Increase thickness of drive pinion height adjusting shim in order to bring drive pinion close to hypoid driven gear.
6. If tooth contact is correct, mark the retainer position and loosen it. After fitting a new O-ring and oil seal, screw in the retainer to the marked position. Tighten the lock plate with specified torque.
Tightening torque: 25 Nm (2.5 kgf-cm, 18 ft. lbs.)