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fixing a pinion seal leak
#235739
02/25/09 11:02 AM
02/25/09 11:02 AM
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Anonymous
OP
Unregistered
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Anonymous
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Unregistered
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How do I go about fixing this pinion leak. I noticed alot of oil under the car yesterday and I have a pinion seal leak. Is there anything I need to know before attempting to fix?
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Re: fixing a pinion seal leak
#235740
02/25/09 11:58 AM
02/25/09 11:58 AM
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Joined: Apr 2005
Posts: 1,880
USA
Ron Silva
top fuel
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top fuel
Joined: Apr 2005
Posts: 1,880
USA
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What rear and carrier do you have?
If it is an 8 3/4 with a 742 carrier you just zap the nut off with a air wrench and go for it. Then tighten with the air wrench. The torque is supposed to be something like 240 foot pounds.
If it is a 489 carrier then it has a crush sleeve and you should attempt to get the nut back exactly where it was or very slightly tighter. I would mark the nut before removing.
SRT DEMON ONE SEAT
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Re: fixing a pinion seal leak
#235741
02/25/09 12:14 PM
02/25/09 12:14 PM
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Joined: Feb 2007
Posts: 5,080
organ
maximum entropy
master
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master
Joined: Feb 2007
Posts: 5,080
organ
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before you touch the nut, measure the pinion drag with an inch/pound torque wrench. then loosen the nut, replace the seal, reassemble, and tighten the nut to the same pinion drag. maybe a little more. never less.
for what is the good life if not doing things thoughtfully?
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Re: fixing a pinion seal leak
[Re: Ron Silva]
#235742
02/25/09 09:36 PM
02/25/09 09:36 PM
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Anonymous
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Unregistered
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Anonymous
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Unregistered
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Quote:
What rear and carrier do you have?
If it is an 8 3/4 with a 742 carrier you just zap the nut off with a air wrench and go for it. Then tighten with the air wrench. The torque is supposed to be something like 240 foot pounds.
If it is a 489 carrier then it has a crush sleeve and you should attempt to get the nut back exactly where it was or very slightly tighter. I would mark the nut before removing.
Its a dana 60.
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Re: fixing a pinion seal leak
#235743
02/26/09 10:00 AM
02/26/09 10:00 AM
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Anonymous
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Unregistered
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Anonymous
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Unregistered
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Re: fixing a pinion seal leak
#235744
02/26/09 01:13 PM
02/26/09 01:13 PM
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Joined: Aug 2003
Posts: 43,127
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,127
Bend,OR USA
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Dana 60 use shims for all of the clearances and preloads, the best way to do it in my opinion. Zap the pinion nut off and tap the yoke out and then replace the seal, nothing to it  Make sure and drain the gear oil out and clean the housing up real clean around the front where the seal goes in and tighten the heck out of the pinion nut, 240 FT Lbs+ I use a real thin layer of sealant type silicone on the seal before tapping it into the housing, unless the seal has a bead of teflon on it already  Good luck Let us know the results
Last edited by Cab_Burge; 02/27/09 12:38 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: fixing a pinion seal leak
[Re: Cab_Burge]
#235745
02/26/09 01:52 PM
02/26/09 01:52 PM
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Joined: Apr 2007
Posts: 2,826
NY usa
540challenger
master
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master
Joined: Apr 2007
Posts: 2,826
NY usa
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Quote:
Dana 60 use shims for all of the clearances and preloads, the best way to do it in opinion. Zap the pinion nut off and tap the yoke out and then replace the seal, nothing to it Make sure and drain the gear oil out and clean the housing up real clean around the front where the seal goes in and tighten the heck out of the pinion nut, 240 FT Lbs+ I use a real thin layer of sealant type silicone on the seal before tapping it into the housing, unless the seal has a bead of teflon on it already Good luck Let us know the results
 but when you have the yoke off check the yoke where the seal rides it. If it worn too much you need to get a sleave for the yoke or a new yoke.
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Re: fixing a pinion seal leak
[Re: Cab_Burge]
#235746
02/26/09 04:17 PM
02/26/09 04:17 PM
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Anonymous
OP
Unregistered
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Anonymous
OP
Unregistered
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Quote:
Dana 60 use shims for all of the clearances and preloads, the best way to do it in opinion. Zap the pinion nut off and tap the yoke out and then replace the seal, nothing to it Make sure and drain the gear oil out and clean the housing up real clean around the front where the seal goes in and tighten the heck out of the pinion nut, 240 FT Lbs+ I use a real thin layer of sealant type silicone on the seal before tapping it into the housing, unless the seal has a bead of teflon on it already Good luck Let us know the results
Thanks Cab I will let you know.
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