Chevrolet Silverado 1500 / 2500 / 3500:

replaced rear pinion seal need help

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# 1  7/17/2010 1:33 AM

New member
Registered: 7/17/2010
Posts: 1

replaced rear pinion seal need help

i replaced the rear pinion seal on the rear end and i need to know how much to torque the nut that holds the yoke on
this is on a 2005 chevy silverado 1 ton four wheel drive



# 2  7/17/2010 5:41 AM

Registered: 11/24/2009
Posts: 1305

Re: replaced rear pinion seal need help

Providing you marked the Pinion nut to the flange and used an inch pound torque wrench to check how many inch pounds it took to rotate the pinion, and counted the turns it took to remove the Pinion Nut, then the  reassembly should have been in reverse.

Tighten the nut until the pinion end play is just taken up. Rotate the pinion while tightening the nut to seat the bearings.

If the rotating torque is exceeded, or you over tighten the pinion nut, you will have to remove the old collapsible collar and a new collapsible spacer will have to be installed.

Measure the rotating torque of the pinion. Compare this measurement with the rotating torque recorded during removal. Tighten the nut in small increments, as needed, until the rotating torque is 0.40 - 0.57 Nm (3 - 5 inch lbs.) greater than the rotating torque recorded during removal.

You need an inch pound torque wrench. Then you get adapters for the torque wrench to fit the socket that goes on the flange nut. Put the Inch Pound Torque wrench on the flange nut and slowly turn the nut, if it doesn't click, adjust the flange nut a little more and try again. Keep doing this procedure until the torque wrench clicks at the setting of 3 to 5 inch pounds higher than the setting prior to the start of this procedure. This does not torque the nut it tests to see how much torque it takes to move the differential flange.

Once the specified torque is obtained, rotate the pinion several times to ensure the bearings have seated. Recheck the rotating torque and adjust if necessary.

Install the propeller shaft (3) to the pinion yoke (4). Align the reference marks made during removal.

Install the propeller shaft yoke retaining clamps and the bolts. Tighten the bolts to 25 Nm (18 ft. lbs.).

Inspect and add axle lubricant to the axle housing, if necessary.

Lower the vehicle.

If you need more information or illustrations of this procedure you can find them at

If you need us for anything else just let us know and we will dig deeper into the information of this problem.

Let us know how you make out.
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