K 1500 Truck 4WD V8-350 5.7L (1986)
Carrier Bearings: Adjustments
Borg Warner
2 - Pinion
Fig. 3 Installing shims
To adjust differential side bearing preload, change thickness of right and left shims equally so original backlash is not disturbed.
1.
Ensure side bearing surfaces are clean and free of burrs.
2.
Apply suitable lubricant to side bearings. If original bearings are to be reused, original outer races should also be used.
3.
Install differential case in carrier, with bearing outer races in position.
4.
Install left bearing cap and cap attaching bolts loosely so case may be moved during adjustment.
5.
Measure original spacers and subtract .004 inch from each reading. Use caution not to interchange right and left spacers.
6.
Select a service spacer for each side equal to thickness of original shim minus .004 inch, then install shim as shown in Fig. 3. Ensure flat edge of
spacer faces against housing.
7.
At this point, bearings should have no play and no drag (zero preload). If zero preload is not present, shims should be added or removed equally
from both sides as necessary.
8.
Check case for zero endplay using a suitable dial indicator. If shim installation causes excessive pinion to ring gear clearance, select thinner
left shim and add difference to right side. Keep total shim thickness at a value equal to that obtained in step 6.
9.
Install both bearing caps and cap attaching bolts. Torque bolts 40 ft. lbs.
Fig. 4 Gear tooth contact pattern check
