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How do I install the Oil Slinger (Not Oil Pump) on my transfer case? NP231J

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6.2K views 12 replies 3 participants last post by  westerbk  
#1 ·
So I recently I rebuilt my transfer case (NP231J). Of course during the process the oil slinger was destroyed getting it off. I ordered a new one. However, it is an extremely tight fit on the output shaft. I cant even get it started on the output shaft. I am considering oiling up the output shaft, using a torch to heat up the oil slinger, and then some type of pipe to hammer it on with. But, I am wanting some advise or info on any other tricks before I went this route in case its the wrong way to go.

Thanks for any help
 
#5 ·
No, I am not talking about the oil pump. I am talking about the Oil Slinger (Crown Automotive 5016615AA Oil Slinger ). The metal cap that goes on last over the end of the rear output shaft of the transfer case. It wont simply slide on over the output shaft. So I need to know any tricks or methods of getting on without ruining it or the output shaft.
 
#4 ·
Here is one solution


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#10 ·
Well it is not on at all at the moment because I can not get it started at all over the output shaft. So any heating of the oil slinger would be done off the transfer case. Are you suggesting using some type of pipe to place inside the oil slinger to try and open up the diameter a bit so it will slide over the output shaft?
 
#12 ·
This is for a 242 transfer case but I expect the same thing should work. See posts 8 and 11

 
#13 ·
Thanks for the help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Using the brake cylinder hone worked great. Now it did take some time but I would have rather taken my time getting it to the right size than grinding out too much and having to get another one. I didnt even need to heat it up. It still fits snug. I just used a piece of pvc pipe a little larger diameter than the inner flange and tapped it on. After about 6-8 taps it was fully seated.

Thanks again for the link.