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2005-2010 Mustang GT Tech Forum

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Unread 08-16-2008   #1 (permalink)
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Default 2005 Mustang Gt pinion seal replacement

Have any of you guys had pinion seal leaks on your 2005 through 2008 Mustang Gt with relatively low miles? I have just reached 30,000 miles on mine and the pinion seal is leaking already. I could understand if I've had it apart before, but I have not. I've had my 1994 Gt with 88,000 miles and no leaks at the pinion seal. Never had a pinion seal leak with so few miles. I'm planning on tackling with rear end still assembled. Do you think I'll be O.K just disconnecting the drive shaft and strapping aside, removing the flange and replacing the seal? I need your opinions on this!
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Unread 08-16-2008   #2 (permalink)
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Pinion seals aren't hard to replace and are easily done on the car. You'll need a good set of jack stands for ease and safety. You'll need a puller to remove the pinion flange from the pinion shaft. You'll need a seal removal tool to pull the old seal. You'll need an inch pound torque wrench to set pinion bearing preload.

If you've never done it before pick up a Haynes repair manual and I'm sure it will explain it well enough that you won't have a problem.

There isn't anything much more rewarding than working on your own car!
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Unread 08-17-2008   #3 (permalink)
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Default Re:

... how can you get the proper preload on the pinion bearings with the car on a jack stand? You can get the pinion flange off with a rubber mallet and a brass tap (carefully.) You will need a tool to pull the seal since you aren't dissasembling the rear.
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Unread 08-17-2008   #4 (permalink)
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Originally Posted by TheStandard View Post
... how can you get the proper preload on the pinion bearings with the car on a jack stand? You can get the pinion flange off with a rubber mallet and a brass tap (carefully.) You will need a tool to pull the seal since you aren't dissasembling the rear.
E-brake on with disc rears....no problem w/ preload. I would never pound off the pinion flange when all you need is the correct puller, but that's just me.
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Unread 08-17-2008   #5 (permalink)
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Quote:
Originally Posted by cavediver View Post
Pinion seals aren't hard to replace and are easily done on the car. You'll need a good set of jack stands for ease and safety. You'll need a puller to remove the pinion flange from the pinion shaft. You'll need a seal removal tool to pull the old seal. You'll need an inch pound torque wrench to set pinion bearing preload.

If you've never done it before pick up a Haynes repair manual and I'm sure it will explain it well enough that you won't have a problem.

There isn't anything much more rewarding than working on your own car!
No doubt,it is very rewarding and a lot of money saved.

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E-brake on with disc rears....no problem w/ preload. I would never pound off the pinion flange when all you need is the correct puller, but that's just me.
I agree , the right tool for the job makes life easier.
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Unread 08-17-2008   #6 (permalink)
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I'm at 50K and on my 3rd pinion seal. About ready for #4 since I'm seeing a few drops again in the garage.
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Unread 08-17-2008   #7 (permalink)
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Default Pinion Seal

If you only have 30K miles, why not have it replaced under warranty?
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Unread 08-17-2008   #8 (permalink)
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A 2005 is likely beyond 36 months.
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Unread 08-18-2008   #9 (permalink)
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My car is no longer under warranty or I would. Purchased in September 2004 with 3 year 36,000 mile warranty. Warranty has since expired. Your Probably like me though and still hate to take your pride and joy into the shop. Hey, thanks for lookin out for me though!!
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Unread 08-18-2008   #10 (permalink)
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Quote:
Originally Posted by stlwagon View Post
I'm at 50K and on my 3rd pinion seal. About ready for #4 since I'm seeing a few drops again in the garage.
Seriouisly! Almost time for a 4th pinion seal? I hope I don't need to replace that often. Thanks for the input. Nice Mustang by the way!!!!
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Unread 08-19-2008   #11 (permalink)
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Dealer replaced mine at 24k miles...
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Unread 08-19-2008   #12 (permalink)
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Quote:
Originally Posted by onesharpstang View Post
Seriouisly! Almost time for a 4th pinion seal? I hope I don't need to replace that often. Thanks for the input. Nice Mustang by the way!!!!
I should just buy them by the gross and set them aside.
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