Rear differential - Ford Powerstroke Diesel Forum
 
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post #1 of 9 Old 01-20-2014, 11:15 AM Thread Starter
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Rear differential

I have uknowingly been driving around for over a year with a 285/16 and a 265/16 rear tire. What are the chances of this to cause me to have rear diff problems? Lately I have noticed during a turn I would get some vibration in the rear...now I sometimes get a dragging feeling that comes and goes. Could I have damaged my clutch packs in the rear end diff? How much nto repair?

I used to think high mileage was a bad thing, but its a badge of honor on my F250 Powerstroke.
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post #2 of 9 Old 01-20-2014, 08:41 PM
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not cheap to fix.

checked gear oil for shavings?

99.5 f250 7.3 4x4 260k FF 160/30, PHP Hydra, S&B CAI, 4" Exhaust, RR Billet Wheel, Autometer Gauges, Transgo, Non-Ebpv Pedestal, High Flow Outlet, 08 Tow Mirrors.

Dad-2000 7.3 4x4 110k miles, Autometer Gauges, Superchips 1705, 6637, 4" Exhaust, BD Billet Wheel, TruCool Max
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post #3 of 9 Old 01-20-2014, 08:46 PM
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Drop pan, see if you have actual issues with the R&P. If you burned out the clutches, no biggy for normal use. Clutches are for posi-lock. If nothing is wrong, replace with tires that are the same size and press on with life.

2002 F250 CCSB 4x4
PHP Phoenix, John Woods VB, NUC bypass, 6637

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post #4 of 9 Old 01-21-2014, 01:08 AM
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i think pulling the cover to see will definately be in order.
when was the gear oil last changed?

99.5 f250 7.3 4x4 260k FF 160/30, PHP Hydra, S&B CAI, 4" Exhaust, RR Billet Wheel, Autometer Gauges, Transgo, Non-Ebpv Pedestal, High Flow Outlet, 08 Tow Mirrors.

Dad-2000 7.3 4x4 110k miles, Autometer Gauges, Superchips 1705, 6637, 4" Exhaust, BD Billet Wheel, TruCool Max
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post #5 of 9 Old 01-21-2014, 03:55 AM Thread Starter
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I will be pulling the cover off real soon. As soon as the 08 style pan gets here. I could easily knock a hole in it by the looks of the rust...
Something is dragging the truck down real bad at times. Its not pulling to one side like a brake problem but It does feel like the brakes are on in the back. I dont know what to do...

I used to think high mileage was a bad thing, but its a badge of honor on my F250 Powerstroke.
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post #6 of 9 Old 01-21-2014, 03:57 AM Thread Starter
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Gear oil has never been changed by me. I did top it off awhile back with what I had in the garage. I guess I need to start by seeing whats in the bottom of the diff pan and go from there.

I used to think high mileage was a bad thing, but its a badge of honor on my F250 Powerstroke.
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post #7 of 9 Old 01-21-2014, 06:14 PM
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could be a frozen slide pin causing the drag?

i had gold flakes in my gear oil when i changed it as well.
but when i pulled the cover again 5k miles later it was fine, had to play catch up on maintenance from the previous owner

99.5 f250 7.3 4x4 260k FF 160/30, PHP Hydra, S&B CAI, 4" Exhaust, RR Billet Wheel, Autometer Gauges, Transgo, Non-Ebpv Pedestal, High Flow Outlet, 08 Tow Mirrors.

Dad-2000 7.3 4x4 110k miles, Autometer Gauges, Superchips 1705, 6637, 4" Exhaust, BD Billet Wheel, TruCool Max
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post #8 of 9 Old 02-01-2014, 02:58 AM
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I think the clutch packs are $170?
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post #9 of 9 Old 02-01-2014, 09:33 AM
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Quote:
Originally Posted by putzer View Post
I think the clutch packs are $170?
$300

TracLoc positraction Clutch Set for 3 Pinion Design for 10.5" Ford - YPKF10.5-PC

2002 F250 CCSB 4x4
PHP Phoenix, John Woods VB, NUC bypass, 6637

"No country can be called free which is governed by an absolute power;
and it matters not whether it be an absolute royal power or an absolute
legislative power, as the consequences will be the same to the people."

--Thomas Paine, Four Letters on Interesting Subjects, 1776
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