Back pressure

[ShawnAgne]

It is an easy rebuild. I had to do that after I blew my pump when I added another cylinder to articulate the snow blade. I didn't think about adjusting the pressure relief on the new cylinder.

[John *.?-!.* cub owner]

Actually there are 2 different pumps, with the only noticeable difference being one has a standard oil seal, and the other an O-ring.

[leeboy50cub]

Well been a couple months but finally rebuilt pump today. I got the kit but after doing all the o rings I think I could of of got the main oring and been fine. Thanks for tips and info guys, removing the key was the worst of it. Got to get new key tomorrow.

[John *.?-!.* cub owner]

I had one that was so tight I finally took it to a friend that had a machine shop. After spending half an hour trying the same things I had tried he welded a small nut to it so he could get a better grip on it and it came right out.

[Willy]

I rebuilt mine back in early November, but went with a "quad/x-ring" type o-ring in an effort to have it seal in a different part of the pump shaft than the original o-ring did. The original ring left a nice groove where it rode on the shaft. So far it's held up pretty good. I did have to round down a sharp cornered edge on the shaft with a small file as that quad ring didn't want to slip over it without twisting up.

As for that key, I used a set of needle nose vise grips on the old one and just replaced the fool thing after I got it out.

[leeboy50cub]

The shaft had some wear ,no filing required though. Now that key did me in, I was trying to be gentle ( been known to break stuff) but it would not budge. Drove up to a Buddy's and within 30 seconds he had it out, I just shook my head.....