Replacing a pinnion seal

Craig K. · 06-18-2007, 10:37 AM

If I have to replace a pinnion seal can I:

1) Measure the rotating torque with an inch pound dial wrench on the pinnion nut
2) Loosen the pinnion nut
3) remove the carrier
4) remove the pinnion gear
5) replace the seal
6) re-install the pinnion
7) re-install the carrier, placing the shims in the same order and placement as they came out
8) re-tighten the pinnion nut to achieve the same rotating toque as before the disassembly

I have a leak on the seal, and it is loosing about half a teaspoon every few days.

QWKSNKE · 06-18-2007, 11:01 AM

All you do is..
Remove driveshaft
Remove pinion nut and flange
Remove seal

Reinstall in reverse order

Craig K. · 06-18-2007, 11:21 AM

Quote:

Originally Posted by QWKSNKE

All you do is..
Remove driveshaft
Remove pinion nut and flange
Remove seal

Reinstall in reverse order

Do you have to measure the rotating torque of the pinnion, so you set it the same (like a preload), or is it just a straight torque number?

QWKSNKE · 06-18-2007, 04:02 PM

As long as you are not replacing the crush sleeve (which you wouldn't be) tighten the nut up to where you have the front to back slop out of the pinion. Do not tighten it up so much that you cannot rotate the rear end.

I can't give you a torque spec because you may crush the pinion sleeve which does not need to be crushed again.

Treat it like a front wheel bearing on a older car. Rotate assembly, tighten, rotate assembly, etc

04 Mach1 · 06-18-2007, 05:05 PM

Mark the yoke to the rear end housing mark the pinion nut to the yoke and to the pinion. Make sure every thing lines up in the end.

QWKSNKE · 06-18-2007, 08:19 PM

Quote:

Originally Posted by 04 Mach1

Mark the yoke to the rear end housing mark the pinion nut to the yoke and to the pinion. Make sure every thing lines up in the end.

+1 Or at least verify that the factory yellow markings are still on the driveshaft and pinion flange

Craig K. · 06-18-2007, 08:45 PM

Quote:

Originally Posted by QWKSNKE

+1 Or at least verify that the factory yellow markings are still on the driveshaft and pinion flange

They are.

Thanks Lee for the input, hopefully I get to do this in the next week or two.

coupe · 06-20-2007, 08:55 AM

FORD states that you cannot reuse the crush sleeve, but with the threadlock on there, it is fine. Without a lift, you would be looking at a major pain in the ass trying to torque a pinion nut with a new crush sleeve. It is a bear to do.

The measuring of the spinning resistance is just for mechanics going by the books because they do not have common sense. Just as long as it does not drag. You should be able to spin the whole thing without it dragging.

QWKSNKE · 06-20-2007, 10:01 AM

Quote:

Originally Posted by coupe

FORD states that you cannot reuse the crush sleeve, but with the threadlock on there, it is fine. .

bah... Ford don't know anything

coupe · 06-20-2007, 10:57 AM

Sometimes I wonder.

06-18-2007, 10:37 AM	#1
Craig K. Nothing new here Join Date: Dec 2004 Location: Senoia, GA Posts: 2,990	Replacing a pinnion seal If I have to replace a pinnion seal can I: 1) Measure the rotating torque with an inch pound dial wrench on the pinnion nut 2) Loosen the pinnion nut 3) remove the carrier 4) remove the pinnion gear 5) replace the seal 6) re-install the pinnion 7) re-install the carrier, placing the shims in the same order and placement as they came out 8) re-tighten the pinnion nut to achieve the same rotating toque as before the disassembly I have a leak on the seal, and it is loosing about half a teaspoon every few days. __________________ 1974 Triumph TR6 1985 Monte Carlo SS 1986 Mustang GT 2011 KIA Optima GTS

06-18-2007, 11:01 AM	#2
QWKSNKE 3v's are slow Join Date: Dec 2004 Location: Here and There Posts: 17,152	All you do is.. Remove driveshaft Remove pinion nut and flange Remove seal Reinstall in reverse order __________________ 2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP 2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy

06-18-2007, 04:02 PM	#4
QWKSNKE 3v's are slow Join Date: Dec 2004 Location: Here and There Posts: 17,152	As long as you are not replacing the crush sleeve (which you wouldn't be) tighten the nut up to where you have the front to back slop out of the pinion. Do not tighten it up so much that you cannot rotate the rear end. I can't give you a torque spec because you may crush the pinion sleeve which does not need to be crushed again. Treat it like a front wheel bearing on a older car. Rotate assembly, tighten, rotate assembly, etc __________________ 2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP 2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy

06-20-2007, 08:55 AM	#8
coupe Super Moderator Join Date: Dec 2004 Posts: 6,313	FORD states that you cannot reuse the crush sleeve, but with the threadlock on there, it is fine. Without a lift, you would be looking at a major pain in the ass trying to torque a pinion nut with a new crush sleeve. It is a bear to do. The measuring of the spinning resistance is just for mechanics going by the books because they do not have common sense. Just as long as it does not drag. You should be able to spin the whole thing without it dragging. __________________ " If you can't explain it simply, you don't understand it well enough. " - Albert Einstein

06-20-2007, 10:57 AM	#10
coupe Super Moderator Join Date: Dec 2004 Posts: 6,313	Sometimes I wonder. __________________ " If you can't explain it simply, you don't understand it well enough. " - Albert Einstein

06-18-2007, 05:05 PM	#5
04 Mach1 Bet I red light B4U Join Date: Aug 2005 Location: ANNISTON, AL Posts: 975	Mark the yoke to the rear end housing mark the pinion nut to the yoke and to the pinion. Make sure every thing lines up in the end.