Mower deck hydraulic pump not working

2005 428D 61"
Dewinterizing the hopper, tried to raise/lower the deck and nothing! Battery is charged, fuse good, getting 12.3-4 volts at the supply/pump motor connection past the toggle switch. Took the pump off to operate deck by foot and tried to operate pump directly from the battery, nothing. My thinking is replace the motor, there are no markings on this mini-motion package as far as motor sizing, motor manufacturer, frame, etc... Does anyone have information to share or advice. Thxs

After a bunch of phone calls and running all over town I finally ran across a guy that, ironically, had worked on the same pump last summer for another person...what's the odds. Nevertheless, one of the brush springs snapped and the brush popped out. Cleaned up, replaced springs, re-epoxyed the magnets, new seal and O-ring, runs smooth as new. Hopefully good for another 12 yrs.