Recent content by Deke

If it's an older Hydra Mac - like Series 8 vintage, the bucket hydraulics are on a separate pump from the two wheel pumps/motors. So you could have great lifting in the bucket, but problems driving. These might be Sundstrand U Type hydrostatic transmissions, with variable pump, charge pump and...

Okay, Thanks Tazza. I'll give it a try. Best, Deke

Hi Tazza, Thanks for your response... As far as I can tell, the pin sheared outside the pump input shaft seal and no damage was done by this - unless bits of metal were able to get inside the shaft seal and into the pump. The pump shaft turns easily, with no obvious hard spots or kinks. The...

Anybody care to give me their opinion? Ken, Tazza, OldMachinist? Sundstrand Series 15 pump/motor... Have it out of skidder now and found out why there was no pressure (sheared pin in input shaft splined drive)... Is it worth pulling it apart to look at rotating group and swashplates since it's...

Hi Guys. Great website! I've already gotten some helpful info on here by looking over other posts... I have an old Gehl 2500 and left side drive motor stopped working. Hydraulic oil level was good... no leaks. I checked hydraulic pressure and charge pressure on left side pump/motor - both read...