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Author Topic:   Changing pinion seal on 8"
bigbore
Journeyman

Posts: 17
From: Richardson,TX,USA
Registered: Nov 2002

posted 12-16-2002 09:55 AM     Click Here to See the Profile for bigbore   Click Here to Email bigbore     Edit/Delete Message   Reply w/Quote
Differential experts please speak up!
I changed the pinion seal on my 8" differential. What is the correct way to reset the pinion nut. I carefully torqued it down until I felt the bearings bottom out and then backed it off a little. It seems to be running a too hot and I do not want to destroy the bearings and ring and pinion.
I am sure there is a correct way to set it but I do not have a manual that goes back far enough.

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SteveLaRiviere
Administrator

Posts: 43151
From: Saco, Maine
Registered: May 99

posted 12-16-2002 10:05 AM     Click Here to See the Profile for SteveLaRiviere   Click Here to Email SteveLaRiviere     Edit/Delete Message   Reply w/Quote
This should explain it:
https://mustangsandmore.com/ubb/Forum9/HTML/000607.html

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Moneymaker
Administrator

Posts: 25883
From: Lyons, IL, USA
Registered: May 99

posted 12-16-2002 10:06 AM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
With the entire pumpkin assembled, it is difficult to do without experiance. SInce you didn't replace the crush sleeve, it's all a touchy feely process. The torque spec is 14 inch pounds for the pinion bearing after crush, but that does you no good.
You need to loosen it back up and get a new nut from a dealer or parts store. Then, install a new nut and snug it until it makes contact with the washer. At that point you start to tighten it until you get some resistance. You want about 1/4 inch left to right play total. (1/8 either way).

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Alex Denysenko
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bigbore
Journeyman

Posts: 17
From: Richardson,TX,USA
Registered: Nov 2002

posted 12-17-2002 09:29 AM     Click Here to See the Profile for bigbore   Click Here to Email bigbore     Edit/Delete Message   Reply w/Quote
Moneymaker,
Thanks for the reply.
I do not understand what you are measuring when you want 1/4" right to left play.
Could you elaborate.

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Moneymaker
Administrator

Posts: 25883
From: Lyons, IL, USA
Registered: May 99

posted 12-17-2002 10:03 AM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
If you grab the yoke with your hand and can turn it left and right a total of 1/4 inch max.
IN other words a total of 1/4 inch side to side play.

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Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com

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Fastymz
Moderator

Posts: 18703
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 12-17-2002 02:11 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
I need to replace me pinion seal too.On the unit I got from thew junk yard last year.But I dont want to [email protected]#% it up.Is it better to replace the crush selve too?
Mine leaks alittle from the pinion nut area.Only when it's warm out.It will leave about the size of silver dollar over a day or two.
Is it something that should be changed or can it be put off.
Rear work so good now,I hate to mess it up.

SCOOP

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Moneymaker
Administrator

Posts: 25883
From: Lyons, IL, USA
Registered: May 99

posted 12-17-2002 05:05 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
As long as the level is up, I wouldn't worry about it now Scoop.

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Alex Denysenko
Co-Administrator and Moderator

NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl

Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com

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