pinion oil seal

[lowtideride]

Is there anything I should look out for when I put this in? and do I need a puller to get the old seal out?

thanks,
-Al

p.s. thanks CDAN for the part.

 

[lowtideride]

any takers?

 

[60wag]

A screwdriver will get the old seal out. Check the seal surface on the flange for a groove from the old seal. If there is a groove, sometimes you can set the new seal to a slightly different position so the new seal doesn't ride in the old groove. Make sure you properly torque AND STAKE the pinion nut.

 

[lowtideride]

and stake? pwweaassee explain that one.

p.s. thanks for postin up..

 

[Blue60]

Just replaced both of mine...

When you stake a nut, you are indenting a portion of the nut (deforming it essentially) so that it helps keep the nut from loosening. You make this deformation into an indentation of the threaded shaft the nut is torqued onto. It will be quite evident when you look at the pinion shaft as you remove the old (hopefully staked nut!) You can do the staking in a variety of ways I imagine, but I just take a cold chisel to slightly cut two slits into a small portion of the outer facing of the nut, then use a punch and a small sledge to smack/deform that small portion of the nut into the indentation. DON'T cold chisel completely thru the nut, you are just marginally cutting into the nut over a small distance. I also use blue locktite and a torque wrench. You will need some way to hold the pinion flange from turning as you take off the old nut, and torque on the new one. I welded two bolts onto a piece of scrape 2x2 steel which fit into the bolt holes of the pinion flange. (Another PH trick I believe)

Also lube the inside ring of the seal which rides on the shaft with a bit of oil so that it slide on the shaft easily without rolling and possibly losing the tension ring spring.

Cheers, and good luck.

Dave

 

[lowtideride]

thanks for the info man!

 

[euclid]

Al,

Make sure and look at Ken's point in this thread:
https://forum.ih8mud.com/showthread.php?t=20677&highlight=pinion+oil

RTV will keep you from having to do it again. I am doing this same seal next week.

GT

 

[lowtideride]

noticed the torque wrench only goes up to 100....anyone remember the torque number from when they did it? worried it might be over 100.

 

[Blue60]

Torque range...

Factory service manual states a range of "(145-173 ft-lb)"
SOR lists 160 ft-lb which is mid range of FSM range

Good luck...my torque wrench only goes to 160 ft-lb...I lucked out...

Cheers, and Keep on Cruising!

Dave

 

[lowtideride]

I guess I'll be using the guess-o-meter... thanks for the post brotha..

 

[cruiser_guy]

160ft/lbs is about as good as I can go on my own with my breaker bar with no extensions while laying under the truck. That's what I use for a "torque wrench" for that nut.

 

[rightlane]

that thread you referenced said it might not be the seal, what should i be looking for after pulling the nut and washer to tell me if i need a new seal or just rtv? thanks

 

[lowtideride]

AAALLLright, i just pulled the drive shaft to find out that. I don't have a big enough socket to get the nut off...does anyone know what size it is?

thanks..

 

[cruiser_guy]

My big sockets for the 'Cruiser are 27mm, 30mm, 32mm and 36mm plus the huge front axle socket. I can't remember what size the pinion nut is (my guess is 32mm or 36mm).

 

[nakman]

Lowtide, I think it's a 27mm, it's been a while. But you see how part of the nut is mashed in over the groove, that's the "stake" of the stake nut. I was told when I did this to never reuse a stake nut, probably because the act of staking it, then unstaking it as you force it off the shaft, then restaking weakens the metal?

Only thing I'll add from above is try chock the wheels real well (+parking break), then you don't have to worry about anything moving when you start yanking on that breaker bar. I used the same torque wrench that cruiser_guy did above, give it all you got with the 24 incher...

Oh, and spring for the $4 seal puller.. you'll just bugger it up in there trying to use a screw driver, plus that puller will come in handy over and over again. good luck!

 

[kevin g]

Lowride,
If the pinion nut is the same as the transfer case output nut, then it is a 32mm.

 

[nakman]

it is a 32mm

You are correct, sir... just checked on an old one.

 

[lowtideride]

nakman. I owe you a beer, thanks for the trouble bro

 

[PolishX]

32 mm , dam where am I going to get one of those

 

[kevin g]

32 mm , dam where am I going to get one of those

Sears has them. You may also be able to find one at an auto parts store.