Hello, Do you have all the special tools required to perform this job?
What parts are new, Did you replace the ring and pinion gear set?
Ring gear and pinion are supplied as matched sets only. The identifying numbers for the ring gear and pinion are painted onto the pinion gear shaft and the side of the ring gear. A plus (+) number, minus (-) number or zero (0) along with the gear set sequence number (01 to 99) is on each gear. This first number is XXXXX amount (in thousandths of an inch) the depth varies from the standard depth setting of a pinion marked with a (0). The next two numbers are the sequence number of the gear set. The standard depth provides the best teeth contact pattern. Refer to Backlash and Contact Pattern for additional information.
Compensation for pinion depth variance is achieved with select shims. The shims are placed behind the rear pinion bearing. .
If a new gear set is being installed, note the depth variance painted onto both the original and replacement pinion. Add or subtract the thickness of the original depth shims to compensate for the difference in the depth variances. Refer to the Depth Variance chart.
Note where Old and New Pinion Marking columns intersect. Intersecting figure represents plus or minus the amount needed.
Note the painted number on the shaft of the drive pinion (-1, -2, 0, +1, +2, etc.). The numbers represent thousands of an inch deviation from the standard. If the number is XXXXX add that value to the required thickness of the depth shims. If the number is XXXXX subtract that value from the thickness of the depth shim. If the number is XXXXX no change is necessary.
Measurements are taken with pinion bearing cups and pinion bearings installed in the housing. Take measurements with Pinion Gauge Set and Dial Indicator C-3339 .
NOTE: Arbor Discs 8541 has different step diameters to fit other axles. Choose proper step for axle being serviced.
The following must be considered when adjusting bearing preload and gear backlash:
NOTE: The differential bearing cups will not always immediately follow the threaded adjusters as they are moved during adjustment. To ensure accurate bearing cup responses to the adjustments:
NOTE: The left-side threaded adjuster torque should have approximately 102 N·m (75 ft. lbs.). If the torque is considerably less, the complete adjustment procedure must be repeated.
After the proper backlash is achieved, perform the Gear Contact procedure.
The ring gear and pinion teeth contact patterns will show if the pinion depth is correct in the housing. It will also show if the ring gear backlash has been adjusted correctly. The backlash can be adjusted within specifications to achieve desired tooth contact patterns.
The areas on the ring gear teeth with the greatest degree of contact against the pinion teeth will squeegee the compound to the areas with the least amount of contact. Note and compare patterns on the ring gear teeth to Gear Tooth Contact Patterns chart and adjust pinion depth and gear backlash as necessary.
When measuring side gear clearance, check each gear independently. If it necessary to replace a side gear, replace both gears as a matched set.
I hope this helped if so an accept is appreciated