leaking transfercase(NV271) HELP

[fritzimax]

I am getting ready to tow my travel trailer on vacation from NY to FL in a few days, I was checking all my fluids only to find than the transfer case is low or empty and there is oil slung all over the underside of the truck. The oil was by the rear extension housing of the transfercase, the dust boot is dry rotted and cracked and I assume the seal is shot. My Question is the extension housing filled with fluid? Or is there another seal at the rear housing that may be leaking too? I am going to the dealer tomorrow to see if they can fix it ASAP, if not I need to get the parts to do it myself and I need all the help I can get. Does any one know the part numbers to the boot and the seal or seals? I looked at the Manual and it does not look to hard to replace. I f I do not get it fixed by Wednesday it looks like the family vacation will be canceled. I thank all those who reply, Pete (not a Happy Camper)





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[ThomasLawrence]

Pete,



That's the only seal - that boot you're looking at is part of the seal. The fluid level isn't up that high in the transfer case, but it gets slung around inside the case, and makes it's way up there.



You're right - replacement is pretty simple. Remove the driveshaft (unbolt the rear flange, then the center carrier. Mark the orientation of the rear flange so it can be installed in the same position, then slide the slip yoke out from the transfer case). Pull the old seal out with a seal removal tool, or a screwdriver. Tap the new seal into place. Ideally, use a piece of pipe that fits over the seal to drive it in, but if not, tap the seal in uniformly around it's circumference, so that it goes in evenly. Make sure the slip yoke is clean, and lightly oiled with ATF, then slip it back in place. Bolt up the carrier bearing, and bolt the rear flange back in place.



The case will take a little over 2 quarts of ATF+4. Fill the case until fluid just starts to run out of the fill hole (the higher of the two round 3/8" hex-driven plugs on the back of the case).





Good luck



-Tom

 

[PJ]

How many miles have you got on the rig? I would think the drive train warranty would cover this.

 

[fritzimax]

Thanks for the reply, I have 15,200 miles on her and I don't know why the seal failed so early. Pete