Model 30

Ring Gear Diameter, Inch 7 1/8
Ring Gear Backlash 0.005 - 0.008
Pinion Gear Depth 3.635
Pinion Bearing Preload [03]
Differential Bearing Preload 0.015
Side Gear Clearance 0.007
Case Runout 0.002

Footnote:

[03] -- Original bearing, 10-20 inch lbs.; Replacement bearing, 15-35 inch lbs.