Construction and other equipment - Did I blow my hydraulic pump?

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Did I blow my hydraulic pump?

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=31493
Printed Date: 04 Apr 2025 at 5:29am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Did I blow my hydraulic pump?

Posted By: 1greenhornfarmer
Subject: Did I blow my hydraulic pump?
Date Posted: 29 May 2011 at 9:29pm

I recently bought an old I-40 backhoe, after running about 3hrs,( I have about 10hrs total experience), the hydraulics shut down. I didnt hear any breakage sounds, right after it happened I had hyd to the front loader but that went pretty fast too. Any advise on what to do next would be greatly appreciated. thanks

Replies:

Posted By: SHAMELESS
Date Posted: 30 May 2011 at 1:28am

have nuff oil in the resivor?

Posted By: easygoin4
Date Posted: 31 May 2011 at 8:03am

I am a 2.5 yr owner of an I-40 Loader/Backhoe and have all the manuals for her- in Email format if you would like one send me an email. I would like to see pictures of yours if possible. My girl still works pretty good- just bushings/Pins little wore out along with a slow dropping boom and outriggers. The main thing I wish is that the Loader had more KURL in it I find it hard to pick up a load with it. I am new to this whole tractor thing but Love it.

Posted By: Dave A
Date Posted: 31 May 2011 at 11:12am

Check the pump coupling.

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Play the game for more than you can afford to lose... only then will you learn the game.
Winston Churchill

Posted By: 1greenhornfarmer
Date Posted: 31 May 2011 at 4:32pm

OK, had a friend look at it, didn't have tools to take off front grill, but he pointed out the chains were not lined up right at the pump. Hopefully not a broken shaft, I hope to get there tomorrow and open her up. please be easy fix, please be easy fix, please be easy fix...

Posted By: pineyjd
Date Posted: 01 Jun 2011 at 4:59am

If it's been sitting ?,I would change hyd filter,turn pump by hand if poss. to see if it binds.

the grill comes off easy 4 bolts & pump is not to bad to work on.