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7040 hydraulics for pulling
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NEVER green View Drop Down
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Joined: 28 Feb 2013
Location: MN.
Points: 7498 		Post Options Post Options   Thanks (0) Thanks(0)   Quote NEVER green Quote  Post ReplyReply Direct Link To This Post Topic: 7040 hydraulics for pulling
    Posted: 07 Aug 2017 at 9:13am

Took out all shims in compensator for piston pump and the brakes still work, how much pressure required for brakes to keep working????
2-8050 1-7080 6080 D-19 modelE & A 7040   R50       
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tbran View Drop Down
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Joined: 14 Sep 2009
Location: Paris Tn
Points: 3297 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tbran Quote  Post ReplyReply Direct Link To This Post Posted: 07 Aug 2017 at 9:10pm
brakes will work in manual mode with engine off....somewhat
When told "it's not the money,it's the principle", remember, it's always the money..
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Points: 20547 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 08 Aug 2017 at 7:21am
I might think about removing the piston pump entirely and installing a 250 psi regulator on the return side of the orbitrol and sending that 250 psi pressure to the brake valve so there was still "power" brakes and no piston pump at all.
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Points: 7498 		Post Options Post Options   Thanks (0) Thanks(0)   Quote NEVER green Quote  Post ReplyReply Direct Link To This Post Posted: 08 Aug 2017 at 9:56pm

Yes.... very interesting, something to consider. On a hard starting stock 7040, I took out all the shims and it did noticeably start easier.
2-8050 1-7080 6080 D-19 modelE & A 7040   R50       
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tbran View Drop Down
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Points: 3297 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tbran Quote  Post ReplyReply Direct Link To This Post Posted: 08 Aug 2017 at 11:46pm
At Louisville many years ago there was a 7030 power train that had an electrical motor sticking out of the hole where the gerotor pump was that was powered a pump doing exactly what the good Dr. suggested above except it eliminated all power train hp loss due to powering a hyd pump. Unit had a Crower clutch..
When told "it's not the money,it's the principle", remember, it's always the money..
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