8070 hydralics
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=52278
Printed Date: 23 Jun 2025 at 9:44am
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Topic: 8070 hydralics
Posted By: BStone
Subject: 8070 hydralics
Date Posted: 18 Jun 2012 at 12:23pm
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I'm going to hook a spray rig up to my 8070 that I have been using with my 185.I know I have to change the hyd pump so that it will be using a closed center hyd that the 8070 uses.On the 185 I just used a rubber strap to hold the hyd lever engaged.On the 8070 with the closed system how do you keep the hyd engaged?
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Replies:
Posted By: TREVMAN
Date Posted: 18 Jun 2012 at 12:28pm
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It should stay engaged without any strap or anything, Trev.
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Posted By: ryan(IN)
Date Posted: 18 Jun 2012 at 12:43pm
That is if everything is adjusted correctly....
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ryan
1984 8070 FWA,1979 7060,1975 7040,1971 190,1960 D-17D,1957 D-14, 196? D-19G, 1975 5040,1971? 160,1994 R62
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Posted By: BStone
Date Posted: 18 Jun 2012 at 12:49pm
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Ok.I'll know in a few days when I hook it up.Thanks for the replies.
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Posted By: randy
Date Posted: 18 Jun 2012 at 4:30pm
You should be able to adjust the flow in the cab to get the pressure you want. I think if your pump has a adjustment, it should be full flow and then adjust the flow in the cab to control the max pressure. The hyd lever should stay in detent and should work fine. It works great in my 8050.
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CA WD WD45 D17 D17 Diesel 7060 8050 8070
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Posted By: DrAllis
Date Posted: 18 Jun 2012 at 4:47pm
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You must adjust the detent kick-out tighter so that the lever stays locked in by itself with no tarp strap......read your owners manual.
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Posted By: darrel in ND
Date Posted: 18 Jun 2012 at 10:19pm
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On the hydraulic motor on the spray pump there will probably be a by-pass screw with a jamb nut. Make sure that is turned all of the way in, then like others said, use your tractor flow controls to dial in your pressure. And like Dr. says, if the hydraulic lever kicks out, set up the detent per operators manual. Darrel
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Posted By: 7060
Date Posted: 18 Jun 2012 at 10:35pm
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Someone just posted on agtalk today about running the pump return back into the bottom sightglass hole to keep the oil from overheating when spraying. Just thought Ide throw that out there.
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Posted By: MACK
Date Posted: 19 Jun 2012 at 6:32am
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NO. Run it back through the hyd. couppler. MACK
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Posted By: MN_M2
Date Posted: 19 Jun 2012 at 8:15am
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MACK, could you comment more about running the return oil back through the tractor hydraulic couplers and not through the sit glasses. I was looking at running a hydraulic driven sprayer pump with a 7020 and would like to know the correct way to do this. For me it would need to run it 8+ hour a day on some of the warmest days and I don't want to overheat the oil. Thanks!
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Posted By: Unit3
Date Posted: 19 Jun 2012 at 10:04am
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I run a Redball 680 with a 108' boom on a 7045PS. Turn the detent screw in and this will keep the lever held in place. I was told to run the lever in lower and push it ahead to float to shut it off. Use the first or right hand valve in the stack. We return the oil through the valve, but I have seen it done retuning the oil through a siteglass. Wash out your radiater and oil cooler before you begin. And may all your spray days be windless days.
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Posted By: MACK
Date Posted: 19 Jun 2012 at 10:12pm
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You will get a little more cooling of oil by going back through valve. MACK
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