Novak Conversions Jeep Wrangler TJ engine mounts

Chipped a tab on my NP231 oil pump Do I need to replace?

samuelLJ

New Member
Original poster
Joined
Feb 17, 2023
Messages
19
Location
Central TX
Re-assembling my NP231 with a full rebuild & replacement of all seals and bearings, and installing an Advance Adapters SYE kit with it. Everything was going fine until I went to put the cover on. I put anaerobic all along the lip of the main housing, and went to install the cover. While holding the oil pump with the filter line, I dropped the stupid oil pump on the garage floor, and chipped one of the little tabs on the outside of it. I was mad as hell that I had everything ready with the RTV on, and I didn’t feel like scraping it off again just to have to re-seal it later. I ended up installing the case cover sans oil pump, with the line zip tied loosely in place. Believe it or not, it is possible to install the oil pump on the output shaft without needing to drop it down with the filter line installed, which I did after the fact here.

It looks like the tabs go between the cover and the output shaft housing, and serve to prevent the oil pump from rotating in the assembly, and to keep it from falling into the rest of the t-case. Do I need to replace the pump? Or are the other tabs enough to keep it in place?
IMG_0116.jpeg
IMG_0115.jpeg
IMG_0117.jpeg
 
I would be pretty confident that the other tabs and that half of a tab will hold the pump in its needed spot without an issue.

I’m thinking the same thing, I just don’t know if I’m being an idiot and I should just replace. The cynic in me is thinking that there is a possibility it chips off more while moving around in there, and the lazy part in me just doesn’t want to split the case again.
 
Ya I was only worried about how it broke and where the piece is. With the piece not being in the case I think you would be fine since I don’t see how any more of it would break as long as it’s not dropped on the floor again lol.
 
the rest of the lugs are going to keep it locked in place, I would 100% send that.
 
The other three tabs will hold the oil pump in place as other members have previously posted; although I would use a bright light and a magnifying glass to inspect the broken tab for tiny cracks that cannot be seen in normal light. You would want an otherwise missed crack turning into a chip that finds its way into the transfercase.
 
  • Like
Reactions: The4bangertj
Novak Conversions Jeep Wrangler TJ engine mounts