Pinion Gear/Ring Gear

Fig 1: Rear Pinion Bearing Cup Installation

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Install pinion rear bearing cup with Installer C-4308 (1) and Driver Handle C-4171 (2).

Fig 2: Front Bearing Cup Installer
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Install pinion front bearing cup with Installer D-129 (1) and Handle C-4171 (2).

Fig 3: Front Pinion Bearing
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Install pinion front bearing (1).

Fig 4: Oil Slinger
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Install pinion front bearing oil slinger (1).

Fig 5: Seal Installer 8681
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Lightly coating gear lubricant on the pinion seal lip and install seal with Installer 8681 (1) and Handle C-4171 (1).

Fig 6: Pinion Depth Shim
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Install pinion depth shims (1) on pinion gear (2).

Fig 7: Rear Pinion Bearing
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Install rear bearing (4) on pinion gear (3) with Installer C-4040 (2) and a press (1).

Fig 8: Collapsible Spacer
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Install new collapsible spacer (1) on pinion shaft (2) and install pinion gear in the housing.

Fig 9: Wrench & Installer
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Install pinion flange with Spanner Wrench 6958 and Installer C-3718 (2).

Fig 10: Torque Pinion Nut
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Install flange washer and a new nut on the pinion gear. Tighten pinion nut to 271 N.m (200 ft. lbs.).
With Spanner Wrench 6958 and a torque wrench, slowly tighten pinion nut in 6.8 N.m (5 ft. lbs.) increments until pinion torque to rotating achieved. Measure pinion torque to rotating frequently to avoid over crushing the collapsible spacer.

Fig 11: Torque To Rotate
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Measure pinion (2) torque to rotating with an inch pound torque wrench (1).
The Pinion Torque To Rotate is:
1. Original Bearings: 1 - 2 N.m (10 - 20 in. lbs.).
2. New Bearings: 2 - 4 N.m (20 - 35 in. lbs.).
CAUTION: If maximum tightening torque of 475 N.m (350 ft. lbs.) is reached before torque to rotate is achieved, the collapsible spacer may have been damaged.
Never loosen pinion gear nut to decrease pinion gear bearing rotating torque and never exceed specified preload torque. Failure to follow these instruction may result in damage.

Fig 12: Ring Gear
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Install ring gear with new ring gear (2) bolts (1) and alternately tighten to 136 N.m (100 ft. lbs.).
CAUTION: Do not reuse ring gear bolts, the bolts can fracture causing extensive damage. Failure to follow these instruction may result in damage.
Install differential case in the axle housing.

Fig 13: Torque To Rotate
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Measure differential Total Torque To Rotate (TTTR) with an inch pound torque wrench (1) before installing the axle shafts. This will verify differential bearing preload.
Total Torque To Rotate is: Pinion Torque To Rotate (PTTR) plus 0.79 - 1.24 N.m (7 - 11 in lbs.).

NOTE: If TTTR is too high, decrease shim thickness equally from both sides of the differential and check TTTR again. If TTTR is too low, increase shim thickness equally to both sides of the differential and check TTTR again.