Farm Equipment - 200 hydraulic pump? Part 2

Print Page | Close Window

200 hydraulic pump? Part 2

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=150803
Printed Date: 19 Jul 2025 at 10:04am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: 200 hydraulic pump? Part 2

Posted By: acplowboy45
Subject: 200 hydraulic pump? Part 2
Date Posted: 27 May 2018 at 10:46am

Ok now we rebuilt pump and yes we put everything back together correct took it part twice to make sure of that. Pump was building up too much pressure and blew oil cooler up. So made many calls to different dealer and talked to there service dept and was walked thur steps...we cleaned the sump screen it had blue Teflon pieces in it from pump, cleaned power direct found Teflon in it too belew air into the larger of the 3 ports, went further back cleaned PTO unit and found Teflon in it as well. Now I have done nothing different to this tractor put fix only what needed fixed. I have around 2000psi at an idle on the pump, and I have very little power steering.the pump is getting very very hot. Ones are advising that there is something blocking the flow. Every thing was in working order prior to all these head aches all I was doing was discing. Power steering was working fine, PTO worked, PD was working fine too. NOW anything is possible but could there be something wrong internally inside the pump. To where I gonna have to buy another pump. Does anyone have a 1975 200 pump for sale that works.

Replies:

Posted By: Joe(TX)
Date Posted: 27 May 2018 at 12:49pm

Is it possible that the steering valve or priority valve is blocked by Teflon tape?

How did you test for the 2000psi reading? Which port were you testing?

-------------
1970 190XT, 1973 200, 1962 D-19 Diesel, 1979 7010, 1957 WD45, 1950 WD, 1961 D17, Speed Patrol, D14, All crop 66 big bin, 180 diesel, 1970 170 diesel, FP80 forklift. Gleaner A

Posted By: acplowboy45
Date Posted: 27 May 2018 at 1:11pm

We had a pressure gauge on the primary side of the pump at one of the ports.

Posted By: DrAllis
Date Posted: 27 May 2018 at 1:25pm

Disconnect the "out" hose off the steering orbitrol at the tee and run the oil back into the dipstick fill hole. If you still have high pressure (more than 200 psi) there is a blockage inside the orbitrol. With the steering wheel at rest I can't see how there would ever be more than 200 psi.

Posted By: Dave H (NE)
Date Posted: 27 May 2018 at 1:42pm

oil flows from pump to oil cooler to power steering valve to power director valve. if you have 2000 psi at pump with out using the power director or steering I would think that you may have restriction at or before the steering valve.