NP208 front output shaft seal

[xCaliK5x]

I decided to service the T-case today when I serviced the front and rear diffs, and installed the rear discs on the 14bolt today. Well, after about a 1/2 quart of ATF came out, nothing. I filled it and it started to drip badly out of the front output shaft seal. It "LOOKS" easy to do. Seems like I would pull the front shaft, pull the yolk, change the seal and back together it goes....... HOWEVER this truck is the Anit-easy, I couldn't find a DIY online, so I wanted to ask the bretheren before jumping into it. What am I in for? It only leaks from there or I would yank it out and reseal it.

 

[DeviousK5]

It is that easy,no more instructions necessary

 

[xCaliK5x]

Cool thanks. The yolk feels tight, so I hope a seal fixes it it will leave a 3 inch spot in about 5 minuets dripping right off the yolk. I will get it done monday.

Remember what I said about nothing on this truck being easy? I made this thread at work, drove home, the Check engine light came on on the way home....... I can't win!!!!! Fault code 33 MAP sensor, 42 and 43 ESC module. it started to lose power to. I know all my wiring is good, no vacuum leaks, new plugs/wires/cap/rotor, but this truck has had a less then well kept past. I may just throw a knock sensor, ESC, and MAP at it since they are cheap (I'm used to $230 BMW O2 sensors), and reset my timing to "run good" rather then "0" degrees I had it at for smog. And then off to the exhaust shop for a custom exhaust!

 

[xCaliK5x]

They couldn't find the seal at Pepboys so I'm going to order it off the net. One more question, its leaking and dripping not down the t-case, but out of the yoke where the front driveshaft bolts up. I would think if it were the seal, it would be running down the case? Oh, and I have another issue...... the thread will show up, they come in 3's!!!!

 

[4X4HIGH]

If it's leaking where the nut holds the flange on i would remove the flange retaining nut and then apply RTV around the splined area just below the nut and then reinstall and torque the nut. NP205 t-cases use a serrated rubber seal for this exact reason.

 

[Dabba]

if you dont have a seal puller, buy one and use it. i tried skating by with a few flathead scrwdrivers and it made my life hell, and you may gouge the aluminum. as soon as i got the seal puller it was out and 2 seconds

 

[xCaliK5x]

I got a seal puller. I will try the RTV trick first since its leaking out of the nut. I hope nothing else is messed up like the bearings. If it is, oh well, seems like the trans is coming out soon anyway.

 

[4X4HIGH]

Just make sure you use brake clean or something along those lines to clean ALL oil before applying the RTV otherwise it won't work. Also are you sure the t-case isn't overfilled because of a bad t-case input seal?

 

[xCaliK5x]

When I serviced the t-case Saturday I literally got maybe half a quart out of it and it was nasty. Filled it up to the fill plug hole and it immediately started dripping, I noticed it when I move up to servicing the front diff. So that seal I know is good. By chance you you know what size socket it is and if I need a deep well?