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Old 06-02-2007, 15:57   #1 (permalink)
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Question NEED HELP replacing pinion bearing on a 2001 v6 mustang!!!!

I am trying to reaplace my pinion bearing but my haynes manual says nothing about how to remove and install the pinion bearing at all!! it tells how to remove the oil seal and reinstalling the new seal!! but has nothing about the bearing!!! does anyone know of a website that explains this or any kind of help on replacing this??? that would be great and muchly needed and appreciated if u can help out!!! thanks
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Old 06-05-2007, 15:05   #2 (permalink)
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Re: NEED HELP replacing pinion bearing on a 2001 v6 mustang!!!!

Pinion Angle:

Pinion angle is the difference between the driveshaft angle and the pinion angle on the differential.
See bottom of page for pinion angle recommendations

To measure it you must be able to work under the car with the suspension fully loaded and the car level. You can place jack stands under the rear-end and under the front control arms (as close to the ball joint as possible). A drive on lift will also work for this.

There are two easy ways to measure your pinion, depending on the measuring device you have.

Protractor Measuring Device

Using an angle measuring gauge (adjustable protractor) to measure the difference between the pinion flange and the drive shaft directly. These gauges are available for under $10 from a hardware store.

1.

Place the edge of the gauge vertically against the front of the pinion flange, beside the driveshaft.
2.

Extend the measuring arm forward parallel to the bottom of the driveshaft.
3.

Extend a straight edge under the driveshaft to the measuring arm of the angle gauge.
4.

Hold the straight edge flat against the bottom of the driveshaft and adjust the measuring arm to read the angle.
5.

Depending on the gauge you use, you may have to subtract 90° from your reading to get the correct number.
6.

Your final measurement should be between 0 and 5.

Examine the diagram at the bottom to determine if the pinion angle is nose up or nose down.





Angle Finder Measure Device (Gravity type)

Using a gravity angle gauge (Available at hardware stores) to measure the angle between the driveshaft and the ground & the pinion flange and the ground.

1.

Hold the gauge on the bottom of the driveshaft. Align the gauge front-to-back under the car in line with the driveshaft and read the number from the gauge (Note if angle is up{+} or down{-}). Write down this number.
2.

Next, hold the side of the gauge against the front of the pinion flange (beside the driveshaft). Write down this number (Note if angle is up{+} or down{-}).
3.

Subtract the first number from the second number. This is your pinion angle

Examine the diagram at the bottom to determine if the pinion angle is nose up or nose down.




Pinion Angle Recommendations:
Suspension Recommended Angle
- all solid mounting points. -1 to -1.5
Half Solid & Half Poly Mounting points -1.5- to -2.5
All Poly mounting points -2.5 to -3.5
All Rubber mounting points -3 to -4.5
The more you get away from having all solid mounting points the more the rearend is going to try and rotate upward during launch. Therefore the more angle you must start with to prevent the angle from becoming positive (+). The idea is that when the rearend rotates you want the angle between the driveshaft and the pinion would be 0.
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Old 06-24-2007, 05:17   #3 (permalink)
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Re: NEED HELP replacing pinion bearing on a 2001 v6 mustang!!!!

Quote:
Originally Posted by dashiznit74
I am trying to reaplace my pinion bearing but my haynes manual says nothing about how to remove and install the pinion bearing at all!! it tells how to remove the oil seal and reinstalling the new seal!! but has nothing about the bearing!!! does anyone know of a website that explains this or any kind of help on replacing this??? that would be great and muchly needed and appreciated if u can help out!!! thanks
If you tell me which final drive is fitted to your car I can send you an exploded view of your diff to help you out. Just let me know if you have a live rear axle with either 7.5 or 8.8 or the 8.8 IRS and we'll go from there. cheers
marc
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Old 06-24-2007, 08:15   #4 (permalink)
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Re: NEED HELP replacing pinion bearing on a 2001 v6 mustang!!!!

hey thanks alot!!!!!

i have the 7.5
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Old 06-25-2007, 01:56   #5 (permalink)
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Re: NEED HELP replacing pinion bearing on a 2001 v6 mustang!!!!

OK, Here are the pictures.
I should warn you though, that changing this bearing is a little bit complex and requieres some special tools to remove/install, adjust pre-load and so on, so, if you have no idea about what you're doing ask someone who knows or even better, get them to help you. good luck
marc
Attached Images
File Type: jpg 7.5 diff.JPG (99.4 KB, 4 views)
File Type: jpg 7.5 diff components.JPG (143.5 KB, 2 views)
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