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7040 hydraulics
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one54dodgetruck View Drop Down
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Joined: 25 Jul 2011
Location: Chehalis, wa
Points: 399 		Post Options Post Options   Thanks (0) Thanks(0)   Quote one54dodgetruck Quote  Post ReplyReply Direct Link To This Post Topic: 7040 hydraulics
    Posted: 31 Aug 2016 at 10:35pm
I have a 7040 PD without the 3 hydraulic pumps (they were gone when i got it). Has anyone used a single pump, or different setup?
2 WDs
B
B112
D14
D15 shuttle
180
185
7040
Hd7w
D14
D15
185
7040 pd
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 20548 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 01 Sep 2016 at 10:34pm
Pump #1 is the gerotor pump and makes the transmission clutch and brake work. Pump #2 is for the power steering, rear end lubrication and charging of the main pump. It is also a structural component of pump #1. Pump #3 is the main hydraulic pump and also provides for the power brakes. I suppose you could mount a double-pump on the engine (there's not a place to do that without engine changes) and you'd have to figure out how to provide 15 GPM to the transmission circuit and then 5 GPM to the power steering circuit, etc. Remember each circuit draws oil from a different reservoir, and then there's a matter of plumbing this new system. Just find the correct hydraulic pump that bolts right into place and works like it's intended to.
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