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Mar 11, 2006 | 10:49 PM

Runum

Thread Starter

Pro

Joined: Jul 2003

Posts: 543

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From: DFW Texas

pinion seal

OK guys I am just about ready to put the new 383 and transmission in. I know I had slight pinion seal leak before I pulled the engine. I figure now is the time to replace the seal. Can anyone give me an idea of the torque to tighten it back up so I don't destroy the bearings or have the pinion nut come loose? Can I use the existing preload and then tighten it back up to that value?

Greg

Mar 11, 2006 | 10:52 PM

Pete K

Race Director

Joined: Feb 2004

Posts: 12,517

Likes: 19

Quote:

Originally Posted by Runum

Greg

They do not have a crush collar. The pinions are shimmed for preload. I di not remember the factory torque spec. 150 ft lbs come to mind, but not positive. Use a new nut. Used ones always seem to loosen, even with locktite.

Mar 12, 2006 | 08:44 AM

SS409 425HP

Racer

Joined: Oct 2002

Posts: 416

Likes: 2

From: Westfield MA

Quote:

Originally Posted by Runum

Greg

Not sure what the torque is on your 1991. My 1987 Helms manual lists the pinion torque at 190-210 ft lbs. for the 36 and 44 units.

Mar 12, 2006 | 08:59 AM

0ski_dwn_it

Former Vendor

Joined: Jun 2001

Posts: 7,204

Likes: 6

From: St Marys PA

I usually just use a big air hammer to tighten might down. Never had a problem with them coming loose or any other problems.

Mar 12, 2006 | 01:05 PM

aboatguy

Race Director

Joined: Jan 2005

Posts: 10,641

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From: Slidell Louisiana

Quote:

Originally Posted by ski_dwn_it

I usually just use a big air hammer to tighten might down. Never had a problem with them coming loose or any other problems.

I used a B/A impact gun on mine more than a year ago and it has survive a year of daily driving w/o drama. (I replaced the three seals during my D36 to D44 conversion, the diff was not leaking but I thought since it was out of the car I might as well! )
Mike