Back pressure

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ShawnAgne
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Posts: 452
Joined: Sat May 07, 2016 5:13 pm
Zip Code: 45380
Tractors Owned: 1952 Cub w/ 184 motor (Kid)
12V with Petronix
IH 3160 Mower Deck
54 Leveling Blade
193 Plow
IH528 Trailer
Farmall 300 (Clarence)
12V with Petronix
Woods L306 72"
Circle of Safety: Y
Location: Versailles, Ohio

Re: Back pressure

Postby ShawnAgne » Thu Oct 19, 2017 11:39 am

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.
Shawn Agne

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John *.?-!.* cub owner
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Posts: 22589
Joined: Sun Feb 02, 2003 2:09 pm
Zip Code: 63664
Tractors Owned: 47, 48, 49 cub plus Wagner loader & other attachments. 41 Farmall H.
Location: Mo, Potosi

Re: Back pressure

Postby John *.?-!.* cub owner » Thu Oct 19, 2017 1:24 pm

Actually there are 2 different pumps, with the only noticeable difference being one has a standard oil seal, and the other an O-ring.
If you are not part of the solution,
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leeboy50cub
Posts: 30
Joined: Fri Mar 27, 2015 9:42 pm
Zip Code: 15717

Re: Back pressure

Postby leeboy50cub » Thu Feb 01, 2018 8:08 pm

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.

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John *.?-!.* cub owner
Team Cub Guide
Team Cub Guide
Posts: 22589
Joined: Sun Feb 02, 2003 2:09 pm
Zip Code: 63664
Tractors Owned: 47, 48, 49 cub plus Wagner loader & other attachments. 41 Farmall H.
Location: Mo, Potosi

Re: Back pressure

Postby John *.?-!.* cub owner » Thu Feb 01, 2018 9:01 pm

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.
If you are not part of the solution,
you are part of the problem!!!

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Willy
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Joined: Sun Oct 22, 2017 4:54 pm
Zip Code: 38330
Tractors Owned: 1951 Cub Lil Red
Location: Dyer, TN

Re: Back pressure

Postby Willy » Fri Feb 02, 2018 5:50 pm

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.
Waking up the ol' Cub

Nah, it's not leaking oil. It's just marking it's territory.

leeboy50cub
Posts: 30
Joined: Fri Mar 27, 2015 9:42 pm
Zip Code: 15717

Re: Back pressure

Postby leeboy50cub » Fri Feb 02, 2018 9:15 pm

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.....


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