Sierra 3500 4WD V8-6.6L DSL Turbo (2007)
1. Install the ring gear to the differential case.
Important: The ring gear bolts on the 8.6 inch and the 9.5/9.5LD inch axles have left-hand threads. The ring gear bolts on the 11.5 inch
axle have right-hand threads.
2. Install the new ring gear bolts.
Hand start each bolt to ensure that the ring gear is properly installed to the differential case.
Notice: Refer to Fastener Notice.
3. Tighten the ring gear bolts, Tighten the ring gear bolts alternately and in stages, gradually pulling the ring gear onto the differential case.
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For the 8.6 inch axle, tighten the ring gear bolts in sequence to 120 N.m (89 lb ft).
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For the 9.5/9.5LD inch axles, tighten the ring gear bolts in sequence to 140 N.m (103 lb ft).
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For the 11.5 inch axle, tighten the ring gear bolts in sequence to 237 N.m (175 lb ft).
4. Install the pinion bearing cups.
5. Determine the selective shim thickness for the pinion gear. Refer to Pinion Depth Adjustment (8.6, 9.5/9.5LD, and 11.5 Inch Axles) Pinion Depth
Adjustment (10.5 Inch Axle).
6. Install the selective shim onto the pinion.
7. Install the inner pinion bearing to the pinion.
8. Install a new collapsible spacer.
9. Lubricate the pinion bearings with axle lubricant. Refer to Fluid and Lubricant Recommendations.
10. Install the outer pinion bearing into the axle housing.
11. Install the new pinion oil seal.
12. Install the pinion into the axle housing.
13. Install the pinion yoke.
14. Install the differential assembly.
15. Fill the axle with lubricant. Use the proper fluid. Refer to Rear Axle Lubricant Replacement (8.6 Inch Axle) Rear Axle Lubricant Replacement
(9.5 LD Axle) Rear Axle Lubricant Replacement (9.5 Inch HD and 10.5 Inch Axles).
16. Lower the vehicle.
