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Drivetrain Tech General discussion of drivetrain for the Ford Ranger.

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Old 10-04-2005
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front diff, driveshaft seal

well im leaking front diff fluid from around the front driveshaft as it connects to the diff, not sure how long its been doing it not that long tho

went to ford they say 150$ to change it, its 11.95 for the part, he said something about reseating or resetting the pinion.

id if anyone else has done this or not ? i wanna try and change it myself but dont know how.

any help would be appreciated.

thanks
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Old 10-04-2005
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I can tell you a little about it.

The pinion nut is a funny thing. It's "ovaled" to help make it self locking and when you take one off you're supposed to use a new one.

Once the pinion and flange/yoke are off you can pry out the seal with no problem and put another in.

But then you have to torque the pinion nut and here I'm unsure of how Dana 35's work. In the Ford 7.5/8.8 rear there is a "crush sleeve" which you have to compress and you should replace it generally if you take the flange/yoke off.

Now, compressing it in the rear is a wierd procedure: you have to torque it down with the pinion immobilized, then free it up and check how much force it takes to rotate the pinion (and it's a small amount). If it's not right, you have to retorque.

The catch: it takes like 350 lb/ft to torque the bloody thing!

So, there is some labor involved, and some specialty tools like low range torque wrenches (lb/in) and such.

Again, I know the Ford rears only, but I'm sure the Dana probably is something like it and requires similar attention to detail.
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Old 10-04-2005
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ya i read the front is 250 ftlbs i think.

good information. i think i can handle the job, just want to get the most info i can.
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Old 10-04-2005
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Zach I was going to get you the print out for it from ford but dad just left for PA and i didnt know. i will still try for another guy from work.
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Old 10-04-2005
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ok cool, i wont have time to get it done till this sat or next sat
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Old 10-04-2005
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if its next sat i KNOW i cant get it for ya
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Old 10-04-2005
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i can wait.lol
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Old 10-04-2005
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Quote:
Originally Posted by zabeard
ya i read the front is 250 ftlbs i think.

good information. i think i can handle the job, just want to get the most info i can.
The Dana 35 uses a similar procedure to what John outlined for the rear axles. There is no torque spec for the pinion nut itself. The torque spec is for the rotational drag on the pinion bearings in pound-inches. If you mistakenly exceed that torque by overtightening the nut, you must start over with a new crush sleeve.

You will need a way to apply a lot of torque on the pinion nut and a way to hold the yoke while you're doing that. The factory holding tool is basically a long arm that bolts to the flange. There is also a special seal extractor tool but I would think you could do without it if you're careful.
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Old 10-04-2005
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Yes, exactly. That torque spec for rotating the pinion gear by itself is tough to measure as I had to find someone with the right low-range torque wrench!

You can torque it in the truck with the brakes set -- but then you can't measure the pinion. We broke stuff getting it torqued.
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Old 10-12-2005
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I take it you're out of warranty, cuz the samething happened to me earlier this year. I posted on it too. It seems A LOT of us had same probelm, if you are out of warranty try arguing that it shouldn't have failed or its recalled or something...it won't cost you anything to try!

Of course it's Murphys Law that the cheapest part will fail that which requires an extraordinary about of labor to replace...is the part that will fail!
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Old 10-13-2005
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he has a lift and 33's with 15x10's they will laugh when he trys that...

Last edited by Redneckstone; 10-13-2005 at 11:37 AM.
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Old 10-13-2005
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ya plus its getting fixed for about nothing friday
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Old 10-13-2005
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I have been through one, already, they did mine under warrentee, I think i had like 12K miles on it. Of course I took it to the dealer by friend works at and he said there was all kinds of sand and dirt inbetween the front driveshaft and the diff housing. So that sand and dirt was sitting in there acting like sandpaper on the back of the seal. It was just a matter of time before it started leaking. Now I make sure to take extra care to wash that crap out after wheeling.
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Old 10-13-2005
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that is prolly what has happened to mine... i found alot of water and sand once.
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Old 10-13-2005
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$150 to change it?

i had mine done for $95
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Old 10-13-2005
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i got to do mine... its leaking from the front tho....
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Old 10-13-2005
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that what there talking about
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Old 10-13-2005
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Quote:
Originally Posted by rangererv
$150 to change it?

i had mine done for $95
mine is getting done for 50 tomorrow :)
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Old 10-13-2005
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Quote:
Originally Posted by zabeard
well im leaking front diff fluid from around the front driveshaft as it connects to the diff
...
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Old 10-13-2005
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front pinion seal
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Old 10-13-2005
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Quote:
Originally Posted by zabeard
mine is getting done for 50 tomorrow :)

have fun
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  #22  
Old 10-13-2005
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The SAME thing is wrong with my 03......Leaking around the seal, i need to get it fixed ASAP, its not dripping, but theres crap build up around it from where its leaking...


Rocky
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Old 10-13-2005
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^^
hmmm... must be a bad problem on these rangers
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Old 10-13-2005
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Quote:
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have fun

im not doing it
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Old 10-13-2005
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Quote:
Originally Posted by rangererv
^^
hmmm... must be a bad problem on these rangers
yes its highly common by the design...
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