The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

**Ironangel** · 08-31-2015, 09:52 AM

Short answer is "yes." With new bearings and races, things might get a little tight. Check your wear pattern and as long as it appears to wear in the center of the coast side (if your reusing the existing gears) you should be alright. Like Tony indicated, I would check pinon preload with an inch pound torque wrench and backlash with a dial indicator...OEM pinion shim depth is .030" or close to that. Pinion preload is 13-15 (inch lbs) new, and 6-7 (inch lbs) used, and .006"-.010" (thousandths) backlash...Whats critical is maintaining some, but not to much backlash, and not going to far with that pinion bearing preload (crushing the sleeve to far)

~Ghostrider~

08-31-2015, 09:52 AM	#3
Ironangel Senior Member Join Date: Feb 2010 Location: Falls City, Nebraska "100 Miles From Nowhere" Posts: 2,219	Re: 12 Bolt Truck Differential Short answer is "yes." With new bearings and races, things might get a little tight. Check your wear pattern and as long as it appears to wear in the center of the coast side (if your reusing the existing gears) you should be alright. Like Tony indicated, I would check pinon preload with an inch pound torque wrench and backlash with a dial indicator...OEM pinion shim depth is .030" or close to that. Pinion preload is 13-15 (inch lbs) new, and 6-7 (inch lbs) used, and .006"-.010" (thousandths) backlash...Whats critical is maintaining some, but not to much backlash, and not going to far with that pinion bearing preload (crushing the sleeve to far) ~Ghostrider~ __________________ Michael of the clan Hill, "Two Seventy Two's" 71 1-ton Dually 350 4-Speed 71 C/50 Grain Truck, 350 Split-Axle 4-Speed 02 3/4 ton Express 14 Indian Chief Vintage 1952 Ford 8N, "Only Ford Allowed On The Property" "Be American, Buy American"