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alan
12-12-2000 19:40:01
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I believe the tractor is one of the earlier models also with Waukesha (however spelled) engine. The pump is less than four years old (less than 400 hours on the pump). Previous to this year the tractor was used for some baling, moving in the bales, and using the three point with a bale fork. This year I used it on a hydraulic dump rake. About the second day shortly after starting, the pump started making noise, sort of like an "oiled grinding". The fluid level was ok but the oil seemed a little hot. It was shut off and not used during haying anymore. I then started the tractor to get the hay moved in, the pump sounded fine and everything worked ok. After about an hour it started making the noise again, so I parked the tractor. The next time I tried it it blew out compression fitting on the steel line that runs above the hyd. oil dipstick in the back. I then had the tractor worked on (bearings in the trans., clutch, etc.) and told them to check the pump and repair the line. They said that it was working fine and they didn't notice any noise. The pump checked 2150-psi, which they said, was what it was supposed to. I drove the tractor home, about forty miles, and it didn't make any noise and didn't have any problems that day. Now, the pump will start making noise if it is used more than an hour or so. It is loudest usually between 1200=1500 rpm, when I idle the tractor down when it hits 1200 the noise gets a little louder then quits below that. It doesn't make noise while idling. When I first start it when the oil's cold, the hydraulics are strong. Shortly after they get pretty weak at low rpms (steering barely works at idle, used to work easily). If I run the tractor fast they seem pretty strong, but the pump will start making noise after a while. I don't think the filter's plugged because it is strong when the oil is cold and thick (the oil and filter are about 1 year old). I don't notice any leaks besides a little drip somewhere below the steering shaft that has always been there. Any suggestions on what to check or adjust? I know little about those type of pumps. If the pumps at fault, how difficult is it to change and does anyone know a reliable place to order one? Thanks.
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