Farm Equipment - 8070 hydraulic problem

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8070 hydraulic problem

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=12258
Printed Date: 31 Jan 2025 at 12:17am
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Topic: 8070 hydraulic problem

Posted By: Dwayne TX
Subject: 8070 hydraulic problem
Date Posted: 10 May 2010 at 2:23pm

The line that runs from the pump at the cab firewall to the fluid cooler rubbed through. I lost about 3 gallons of fluid before I got it shut down. Replaced the line and refilled the fluid. Now, with the 3-pt arms raised, the power steering gets 'jumpy' then almost non-existent. Lower the arms and it goes back to normal.

Replies:

Posted By: kip in cny
Date Posted: 10 May 2010 at 2:30pm

sounds like air.

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160 CA 920diesel 5020 HD-3

Posted By: skipwelte
Date Posted: 10 May 2010 at 2:58pm

Did ya put the oil in the trans or rear end? Power steering is off the gear pump and that gets oil from the trans. The tube at the back of rear end housing below the cab window is the trans dipstick and fill tube. It does sound like air. Air will work its way out fairly quickly, Id double check the oil level. HTH

Posted By: Dwayne TX
Date Posted: 10 May 2010 at 3:11pm

Refilled the trans on the upper LH side (long tube w/dipstick) not the one above the top link w/o dipstick.

I've run it off and on for about 30 minutes, working the steering and lift, then checking the fluid. It's staying at the same level now.

Posted By: DrAllis
Date Posted: 10 May 2010 at 3:20pm

WRONG......Fill the rearend and check the sight glasses.............must be ten gallons or more low on oil.

Posted By: Dwayne TX
Date Posted: 10 May 2010 at 3:41pm

Sight glasses never showed oil to be low.

Posted By: DrAllis
Date Posted: 10 May 2010 at 5:41pm

Remove the top sight glass by unscrewing it.(they get foggy).........the oil you lost is from the orbitrol??..which is rearend oil.

Posted By: Gregor
Date Posted: 10 May 2010 at 8:55pm

By chance, you didn't change out the hydraulic filters too. I once forgot to put the pusher on the end of the filter and hand no or very little power steering.