Hello all,
Recently had my 4wd go out and put a posilok system in. Now occasionally my transfer case makes a grinding sound and i noticed last night in all this snow that only my back wheels were spinning. Grinding isnt regular so im wondering if maybe the chain broke and is only hitting the teeth every once in a while or if it slipped off or teeth are broken or what? Any input would be great.

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Time to have a look, and see what's up. First thing to check is the rear output shaft snap ring. Drop the rear driveshaft, pull the tailhousing off the t-case, and see if its still there.

 

like heyou said check the snap ring, its common to break, which will in time ruin a lot of parts inside your tcase. I just went through the same thing. put in a posi lok and a transfer case saver and replaced a few parts inside my transfer case.

Theyre actually really simple to work on, Ive never worked on a transfer case before and it was all pretty straight forward.

I followed this http://www.cumminsforum.com/forum/94...ld-w-pics.html

Although its for a np241 if you have a 1500 youll have a 231 transfer case, but its pretty much the same thing

 

Any tips on droppin the driveshaft? And am i gonna have any fluid loss in taking off the housing to check the ring (gotta make sure i got everything i need to put it back together before i take it apart)

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Maybe a little bit. Basically, it's four bolts at the rear of the driveshaft, pry it out of the yoke, and then pull it straight back out of the t-case. Block the rear wheels, and have trans in neutral, makes life a little easier.

Only three or four bolts holding the tail housing on. It might be stuck on there pretty good though, so, careful not to break it. It IS only aluminum.

With that out of the way, you should see the snap ring right up against the output shaft bearing. If it ain't there, well, that's one problem.

 

Well, finally got a day off that wasnt so cold so i got a chance to get under it.... Any tips on getting that yoke apart?!? I cant get any socket and rachet combo in there the bolt heads are too close to the end of the driveshaft....

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Need to find a spot where you can get a tool on the bolt head, and then work one at a time, rotating the driveshaft to the correct spot for each bolt. Either that, or use a wrench.....

 

Is this the rear DS yoke at the pinion? Just use the right wrenches instead of sockets and a ratchet.

 

Yeah im thinking about going out to a buddies with a lift and see if i can lift from the frame to drop the axle a bit and maybe put more of an angle on the driveshaft to get more workin room. And correct me if im wrong its a 10mm bolt? Im thinkin it is seeing as how thats the only wrench that i cannot find. 😒😠

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Gotta be then......