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Driveshaft Pinion Flange Install (w/pics)

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Old 02-27-2008, 11:31 AM   #1
TacoBill
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Default Driveshaft Pinion Flange Install (w/pics)

This install was performed ona friend's2007 GT, 5-spd Manual.

This is the alternate (or primary, depending what view you have) method when installing a 1-pc driveshaft.

A 3.5" Shaftmasters 1-pc aluminum driveshaft with a replacement pinion flange was used for this installation.

This 'How-To' will only cover the removal and installation of the pinion flange only. The entire driveshaft install can be found here.

Note: This is how we performed the installation and is not meant to replace the Manufacturer's installation instructions or the Ford Service Manual, it is meant for reference only.


Tools required:
27mm socket (6-pt impact preferred)
1/2" drive ratchet
Impact gun
Harmonic balancer/gear puller
Threadlocker, red - High Strength
Torque wrench (up to 140 lbs-ft)


Apply penetrating oil on the pinion nut and let soak for a few minutes (we used PB Blaster).
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Set e-brake.
Using the impact gun with the 27mm socket, remove the pinion nut.
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Pinion nut removed. Set aside, will be re-used.
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Get the new replacement pinion flange ready to install.
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If you're fortunate, the stock pinion flange may simply pull out. No harm in giving this a quick try. If it does pull out, have the new flange ready to go.
The goal is to minimize gear oil loss when the stock flange is pulled out to when the new flange is installed.
Click the image to open in full size.


If you need the assist of a gear puller, install it at this point.
Pictured is one type of puller which utilizes the factory driveshaft to flange bolts. The 3-jaw puller should work just as easliy.
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Once the stock flange is loose and ready to come out, get the replacement flange ready to minimize oil loss.
Once the drive pinion seal is pressed into the case, no more oil should leak out.
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Re-install the pinion nut and run down with a ratched to seat the pinion flange and drive pinion seal.
Note: Do not apply thread locker at this time.
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Once seated, back off and remove the pinion nut and apply thread locker to the pinion thread, then re-install nut until tight.
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Set torque wrench to 140 lbs-ft and torque the pinion nut.
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Installation complete.
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Old 02-27-2008, 11:38 AM   #2
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Default RE: Driveshaft Pinion Flange Install (w/pics)

As usual great write up Bill Click the image to open in full size.
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Old 02-27-2008, 11:42 AM   #3
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Default RE: Driveshaft Pinion Flange Install (w/pics)

Great post as usual !
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Old 02-27-2008, 12:02 PM   #4
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Default RE: Driveshaft Pinion Flange Install (w/pics)

Once again Bill, you are the man!!
Thanks for this write-up.
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Old 02-27-2008, 12:39 PM   #5
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Default RE: Driveshaft Pinion Flange Install (w/pics)

Added to the sticky! Great job!
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Old 02-27-2008, 04:09 PM   #6
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Default RE: Driveshaft Pinion Flange Install (w/pics)

I was hoping someone would do a write-up for the Pinion flange replacement. Thanks Bill!.
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Old 04-07-2008, 09:57 AM   #7
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Default RE: Driveshaft Pinion Flange Install (w/pics)

Hey Bill, I've always admired your work, very profesional. If I had a choice of taking my car to the FORD dealership or you, I'd go with you. Keep up the good work


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Old 04-07-2008, 11:07 AM   #8
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Default RE: Driveshaft Pinion Flange Install (w/pics)

Write the book Bill......
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Old 04-07-2008, 04:24 PM   #9
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Default RE: Driveshaft Pinion Flange Install (w/pics)

you forgot to check preloadand change the crush sleeve and check preload
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Old 05-05-2008, 05:44 AM   #10
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Default RE: Driveshaft Pinion Flange Install (w/pics)

Quote:
ORIGINAL: tayl04

you forgot to check preloadand change the crush sleeve and check preload
Really not necessary on a low enough mileage car. I used the exact same method as bill when I installed my spydershaft and had no issues. (Only had 6K miles on the car.) The only thing I did differently was to replace the pinion nut rather than reuse it, but that was only because I prefer the threadlocker that comes on the factory nut.
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Old 05-06-2008, 04:47 PM   #11
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Default RE: Driveshaft Pinion Flange Install (w/pics)

sorry to be a noob, but what does this do?
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Old 05-06-2008, 05:16 PM   #12
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Default RE: Driveshaft Pinion Flange Install (w/pics)

I believe most one piece driveshafts require this...

Or if you're like me, and buy a used GT Takeoff 8.8in Rear end with T-lok (for two-wheeled spinning out power!!![8D]), this is also a must.

I followed TacoBills instructions and there haven't been problems for the last 2 weeks I've been driving . Thanks TacoBill!

Although the crush sleeve is not something you really want to mess up or screw around with!
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Old 11-04-2009, 11:06 AM   #13
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Thanks!
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Old 11-09-2012, 07:51 AM   #14
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Is this install similar on a 2011?
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Old 02-28-2014, 09:27 AM   #15
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is this better to install the flange with the rear in the car, ive got the rear sitting on the floor in my office and I cant get flange farther than half way on before the axles start rotating. im thinking I can have the car sitting on the ground so the axles wont turn.
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Old 03-02-2014, 09:32 AM   #16
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Quote:
Originally Posted by grogan View Post
is this better to install the flange with the rear in the car, ive got the rear sitting on the floor in my office and I cant get flange farther than half way on before the axles start rotating. im thinking I can have the car sitting on the ground so the axles wont turn.
It's a lot easier to get the preload correct (important) with the rear end off the car rather than trying to do it under the car if on jackstands.
You need a bar with two holes for the flange bolts so you can brace the bar while attached to the flange so it won't rotate while you tighten the pinion nut. This way you can get the necessary pinion preload that is required. With a lift it would be ok to do it on the car. It's not good to consider just guessing at the preload without measuring. An inch/lb torque wrench should be used for proper preload. Too loose or too tight increases the possibility of destroying your pinion bearings and subsequent rear end problems.
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Old 03-02-2014, 09:32 AM
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