Differential 12. ADJUSTMENTS a.
ADJUSTING THE SPLINE SHAFT BEARING PRE-LOAD
1.
Using a standard spacer measuring 0.2" on the machined flat surfaces, assemble the spline shaft into transmission case with low gear, bush, collar and sleeve, medium gear assembly, high gear and high gear bush.
2.
Install tail bearing using either hydraulic press or by induction heating.
3.
Install gear 4WD input and secure assembly with two lock nut and lock washers.
NOTE:
7.
Remove the lock nut and press the shaft to take out bearing and spacer out. 8. Remove the standard spacer from the shaft and install the correct thickness spacer. 9. Assemble gear 4WD, lock nut and lock washer, then secure assembly by tightening the lock nut to the specified torque. 10. Major preload of spline shaft bearing by rotating string wrapping around coupling high-low-medium using spring balance. 11. Change the graded spacer if specified preload is not achieved.
If the differential is in position, sufficient shim thickness must be installed to ensure that the end float of the spline shaft is not restricted by the bevel gear. If the differential is not in position, no shim should be used.
4.
Install a dial indicator on the transmissions case with the stylus bearing against the machined face of the pinion.
5.
Determine the end float of the spline shaft by pushing the spline shaft firmly to the rear and noting the reading, then pulling the shaft forward and noting the reading.
NOTE (1) : Several measurements should be taken, rotating the shaft at each reading. (2) : Ensure that the extreme length of travel is reached in each direction. 6.
As the pre-load on the spline shaft rear bearings is the equivalent of 0.005" tight, the thickness of spacer and shims is determined as in the following example. End float measured..................... 0.003" Fixed pre-load.............................. 0.005" Therefore :Amount of end float to be removed is 0.007" + 0.005" = 0.008" Standard spacer measures 0.2" Therefore : Thickness of spacer and shims to be installed is 0.2" - 0.008" = 0.1992".
NOTE:
E-42
The average thickness of the spacer is 0.203" and graded spacers are available in thickness range of 0.192" to 0.214" in increment of 0.001".
35 Series 4WD, Model - 3535, 4035, 4535 and 5035 SM June’08
