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8070 piston pump stays on high pressure
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Joined: 21 Mar 2019
Location: North Carolina
Points: 637 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 8070nc Quote  Post ReplyReply Direct Link To This Post Topic: 8070 piston pump stays on high pressure
    Posted: 25 Apr 2020 at 8:27pm
I have a 1984 8070 sn 2856. It has 3 remotes. The problem I  have is with a loaded cylinder in the raised position on the middle valve the pump stays on  high pressure. Im thinking the pilot check is sticking or plugged. My question is can it be serviced with the valve on the tractor.
Thanks
1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
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Joined: 17 Nov 2009
Points: 7664 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MACK Quote  Post ReplyReply Direct Link To This Post Posted: 25 Apr 2020 at 10:09pm
Are you saying after your release the lever the pump stays at hi pressure? For how long? Could be stand by pressure is too hi. Close to 600, they some times want to go to hi pressure.        MACK
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Joined: 21 Mar 2019
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Points: 637 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 8070nc Quote  Post ReplyReply Direct Link To This Post Posted: 26 Apr 2020 at 8:49am
Thanks Mack
With no implement hooked up it acts normal. Hook up  the disk and raise it and the lever pops back to hold the pump stays  on high pressure. Without  nothing hooked up if i activate a lever it returns to standby
1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
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