Pinion Depth Check Pinion Bearing Adjustment Tools Needed: Tools Needed: Pinion Bearing Preload Gauge (A) Dial Indicator Group (B). Pinion Depth Gauge (A). Pinion Depth check (1) Bearing cap (A) Pinion Depth Gauge 1. Put the bar and discs of tool (A) in the bearing bores of the housing assembly as shown. Install bearing caps (1) and tighten the bolts. 2. Measure the distance from the end of the pinion shaft to the bottom of the bar with an inside micrometer. Record this measurement. Pinion Bearing Preload Adjustment (1) Shim pack (2) Bearing cone (3) Locknut (4) Pinion gear 3. Measure the outside diameter of the bar with an outside micrometer.
Divide this measurement by 2 and add it to the recorded measurement from Step 2. Record this total measurement. This is the actual mounting distance. 4. Calculate the required shim thickness to add or remove as follows: the nominal mounting distance+deviation from nominal (as marked on the end of the pinion, either + or - number, in millimeters) = required mounting distance. The actual mounting distance (from Step 3) - the required mounting distance = required shim thickness to add or remove (added if difference is +, removed if difference is -). 1. Install tool (A) [or 4.0 mm (.16 in.) of shims] in place of shim pack (1). Install bearing cone (2), the washer, lockwasher, and nut (3).
Tighten nut (3) to a torque of 15 to 34 NҐm (11 to 25 lbҐft.). (NOTE: See Preload Shim Chart for shim numbers.) Example: 78.00 mm (3.071 in.) - nominal mounting distance - 0.08 mm (0.003 in.) - deviation from nominal (marked on end of pinion) 2. Use tooling (B) to measure the end play of pinion shaft (4). Record this measurement. Remove nut (3), the lockwasher, washer, and bearing cone (2). 77.92 mm (3.068 in.) - required mounting distance 78.10 mm (3.075 in.) - actual mounting distance 3. Remove tool (A) (or shims). Measure the thickness of tool (A) with an outside micrometer (if shims were used, measure each shim individually and add the measurements together).
subtract from this thickness the recorded end play from Step 2. This is the thickness of shims (1) that are needed with no bearing preload. -77.92 mm (3.068 in.) - required mounting distance from Step 3 0.18 mm (0.007 in.) - thickness of shims to be added or removed Power Train Testing And Adjusting 24 Preload Shim Chart Part No. Thickness Part No. Thickness 924760 0.04 mm (.002 in.) 924761 0.08 mm (.003 in.) 924762 0.12 mm (.005 in.) 924763 0.25 mm (.010 in.) 924764 0.8 mm (.03 in.) 924765 1.6 mm (.06 in.)