Engine/Transmission (1998.5 - 2002) NV4500 Output shaft leaking

[surfbeetle]

I was under the truck and noticed a slight leak on the output shaft on my 2wd nv4500. How hard is it to replace the seal? What's involved in this repair? I'm debating attempting it myself or just having it done.

 

[hsmith]

You can do it. Remove the drive shaft. Use a large screw driver, pry bar, etc. and pry the seal out. Inspect the yoke and if not smooth you will need to replace it and the housing bushing, which takes a special tool to replace in house. If the yoke is ok, drive the new seal in flush and reassemble.

 

[surfbeetle]

Does the trans need to be drained and refilled to do this?

 

[hsmith]

You will lose little or no fluid doing it this way unless for some reason you have to pull the rear housing, then yes, drain and refill.

 

[surfbeetle]

Okay, I can put it rear up in the driveway to help that. Does anyone have a good source for the seal and or a part number?