Farm Equipment - 7060 hydraulics

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7060 hydraulics

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=20583
Printed Date: 11 Feb 2025 at 2:04am
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Topic: 7060 hydraulics

Posted By: Panhandler
Subject: 7060 hydraulics
Date Posted: 09 Nov 2010 at 12:21pm

7060 extremely slow and weak in raising equipment with hydraulic cylinders. Dealer rebuilt SCV valve bodies and replaced hydraulic filters. Actually have to activate remote I to get remote II to work. (I am calling remote I the lever farthest to the right.) We can get 1500 psi at the SCV.

What should be my next step? Can the pump simply be weak? It seems to be more of a valve problem. Thanks!

Replies:

Posted By: BobHnwO
Date Posted: 09 Nov 2010 at 1:04pm

Did you try adjusting the flow rate,one handle under seat,the other adjusted behind cab.

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Why do today what you can put off til tomorrow.

Posted By: Panhandler
Date Posted: 09 Nov 2010 at 1:15pm

Yes. Neither helped. Dealer told us to take "signal" line off and blow it out in case something was plugging it. Employee thought that briefly helped. We are going to try that again but expect results will be temporary if any.

Posted By: BobHnwO
Date Posted: 09 Nov 2010 at 1:25pm

Did you try a different hose,possible hose collapse inside.

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Why do today what you can put off til tomorrow.

Posted By: Panhandler
Date Posted: 09 Nov 2010 at 1:28pm

Haven't checked that out on the tractor. Have tried the tractor on different implements with same results.

Posted By: tbran
Date Posted: 09 Nov 2010 at 4:37pm

FIRST check the stand by pressure 350-450 - then set the high pressure. This is done via shims or allen screws on the compensator. Go to agcopartsbooks.com and 7060 (enter as guest) and find the compensator on the hyd pump. The small shims are the low pressure and the big ones are the hp. 70268495 would be the shim for th elow pressure. Only IF the pressures cannot be set would the pump be bad. Also you said something about pulling a lever other than the remote needed, if this is the case the pilot check is stuck 70265695 or spring broke or worn on the valve next to the one that will not work.

Posted By: tbran
Date Posted: 09 Nov 2010 at 4:40pm

70268662 is the hose that has a t and cap where the stand by pressure is checked. It is on the RH side of the PTO about 18" to the right and up from the PTO. 3/8 jic cap needs to be removed and install guage

Posted By: maytag
Date Posted: 09 Nov 2010 at 5:30pm

What is the model code for your pump?

Tom

Posted By: Panhandler
Date Posted: 10 Nov 2010 at 6:59pm

The only number I could find on the pump was -322C. It is a 1976 model 7060.

We removed the pilot checks for the two remotes and also the one in the 3 pt valve and all look fine. As I said before, my dealer rebuilt the remote valves which did not alleviate any of our symptoms. We can get 1500 psi at either remote. The dealer had added shims. 1500 seems low to me but I would think that would be enough for the loads I am lifting. We are not getting much flow either but I don't have a way to measure that.

We have another tractor that I am going to steal the compensator from and see what that does.

Thanks!

Posted By: Joe(OH)
Date Posted: 10 Nov 2010 at 9:10pm

This might sound dumb, but I had a similar problem on a 7020. The problem was the pin on one of the levers that connect the lever to the linkage backed out and made it so neither lever worked right. Take a flashlight and shine it down in your console and take a look. Good luck.

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Life is simpler when you plow around the stump.

Posted By: Panhandler
Date Posted: 11 Nov 2010 at 2:05pm

Thanks for all your help guys. Changing the compensator on the pump fixed the problem. Now I need a new compensator. Best to order a new one from AGCO or is there a source for rebuilt or used?

Posted By: DrAllis
Date Posted: 11 Nov 2010 at 4:58pm

If a different compensator fixed it, take the old one apart and I'll bet there's just a broken spring inside the large spool bore.

Posted By: Panhandler
Date Posted: 11 Nov 2010 at 6:44pm

Employee took it apart and everything looked okay. I'll look at it a little closer tomorrow. Thanks.

Posted By: MACK
Date Posted: 11 Nov 2010 at 7:44pm

There is a plate(or washer) on the big spring that some times brakes. MACK