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Faster Hydraulics....?

Discussion in 'Truck & Equipment Repair' started by TJS, Dec 24, 2008.

  1. TJS

    TJS PlowSite.com Addict
    Messages: 1,440

    I have a Fenner DC-80SP set up for my Old School heavy ass Diamond mounted to a MM1 set up. It comes with a 1.6cc/rev (.098ci/rev) pump and a standard duty KMD1 motor. I know this plow is heavy but I am also tired of slow hydraulics. So I was looking around and found the same family gear pump that is 2.5cc/rev and then replace the motor with the KMD3 which is a heavy duty motor. That is an increase of 56.25% more volume.
    I have not bought these parts yet but the gear pump is 65.00 and the motor 110.00.
    Will this bigger gear pump put too much of a tax on my truck's electrical system ? or can I even go with a bigger gear pump.

    Here is the site for some parts and such.

    I have done everything to this pump. Cleaned and flushed, changed screen, removed cylinders flushed and put in the blue fluid. Also I have 2.0" bore angle cylinders. All power cables are #4 and new. I have adjusted the lift pressure to 2600 psi and the angle ones to 2000 psi. Alternator and battery are good. All wiring is new. I had this pump on my 85 chevy before with the same plow and it was still slow. Now it is on a 2002 SuperDuty (gas).

    I have a buddy who has a Boss and it is so fast I cannot believe it.
    I think BOSS uses Fenner/SPX Stone pumps too, but not as heavy as my Diamond blade.

    Need some input on my potential pump mods.