housebus-HT
New User
Gentlemen good evening,
I just bought a Yanmar 1300 off of craigslist. The machine was pretty weathered looking, and it was apparent the former owners hadn't changed any fluids or filters in the time that they had it. It came with a hydraulic snow plow on the front end, and a rock carrier on the rear end. The rock carrier was built for a three point hitch, but had additional support pieces welded to it, and pinned to the tractor (so the 3 point hitch could not be moved.) Former owner said the hydraulics had only recently stopped working.
I believe I have two issues, and would greatly appreciate some help troubleshooting;
<B><s></s>Issue #1; no pressure from hydraulic pump<e></e></B>
<s>[url=https://drive.google.com/open?id=1uYxS00uZISE-uB8_TxqKMuaE45nbvFvN]</s>Lift housing<e></e>[/URL]
<s>[url=https://drive.google.com/open?id=17RsenpDGl33F4m_k3bYWc2IfFVsCysky]</s>Gross filter<e></e>[/URL]
<s>[url=https://drive.google.com/op...cKtwpR1-pohRe3FW]</s>Suction flex coupling<e></e>[/URL]
The fluid that came out was milky, and the screen filter had a solid layer of muck on it. Cleaned and reinstalled the filter. Replaced the trans-hydraulic fluid. When the machine is running, I see a oily mist coming out of the pressure line... but no oil. I pulled both banjo fittings (clean mating surfaces) and removed the hydraulic pump. The engine turns the driveshaft, and the pump turns with the receiving end of the driveshaft. The suction line on top, feeding the pump, was pretty dry. Looking at the flexible union between the two halves of suction pipe, I see a few slits and weather cracks. They are small, but would these be enough to let the pump suck air instead of hydraulic fluid? Is there a hole in my straw? Is there a good way to prime the pump with oil?
<B><s></s>Issue #2; 3 point hitch lift cylinder seized<e></e></B>
<s>[url=https://drive.google.com/op...GCUt3QqdwLWGxcD0J]</s>3 point lift housing<e></e>[/URL]
<s>[url=https://drive.google.com/op...VfBnshUTW]</s>Piston soaking in PB blaster<e></e>[/URL]
<s>[url=https://drive.google.com/op...]</s>cylinder exterior... I know, it's bad<e></e>[/URL]
Once I get hydraulic fluid pumping again, I still have a lift piston which appears to be rusted into the cylinder. My guess is all the warm water evaporating out of the dirty unchanged hydraulic fluid did this thing in. I pulled the lift housing off to investigate because the lift arms moved with no resistance. I was going to take a wire wheel to the exterior and give it a nice coat of AMLguard afterward. Anyone seen this part around the internet? Any techniques for freeing this up?
I also think I'll be replacing brake pads as both pedals offer no resistance. My shopping cart at Hoye is growing. But hey, the thing runs! Good thing I like projects.
Thanks in advance,
Aaron
I just bought a Yanmar 1300 off of craigslist. The machine was pretty weathered looking, and it was apparent the former owners hadn't changed any fluids or filters in the time that they had it. It came with a hydraulic snow plow on the front end, and a rock carrier on the rear end. The rock carrier was built for a three point hitch, but had additional support pieces welded to it, and pinned to the tractor (so the 3 point hitch could not be moved.) Former owner said the hydraulics had only recently stopped working.
I believe I have two issues, and would greatly appreciate some help troubleshooting;
<B><s></s>Issue #1; no pressure from hydraulic pump<e></e></B>
<s>[url=https://drive.google.com/open?id=1uYxS00uZISE-uB8_TxqKMuaE45nbvFvN]</s>Lift housing<e></e>[/URL]
<s>[url=https://drive.google.com/open?id=17RsenpDGl33F4m_k3bYWc2IfFVsCysky]</s>Gross filter<e></e>[/URL]
<s>[url=https://drive.google.com/op...cKtwpR1-pohRe3FW]</s>Suction flex coupling<e></e>[/URL]
The fluid that came out was milky, and the screen filter had a solid layer of muck on it. Cleaned and reinstalled the filter. Replaced the trans-hydraulic fluid. When the machine is running, I see a oily mist coming out of the pressure line... but no oil. I pulled both banjo fittings (clean mating surfaces) and removed the hydraulic pump. The engine turns the driveshaft, and the pump turns with the receiving end of the driveshaft. The suction line on top, feeding the pump, was pretty dry. Looking at the flexible union between the two halves of suction pipe, I see a few slits and weather cracks. They are small, but would these be enough to let the pump suck air instead of hydraulic fluid? Is there a hole in my straw? Is there a good way to prime the pump with oil?
<B><s></s>Issue #2; 3 point hitch lift cylinder seized<e></e></B>
<s>[url=https://drive.google.com/op...GCUt3QqdwLWGxcD0J]</s>3 point lift housing<e></e>[/URL]
<s>[url=https://drive.google.com/op...VfBnshUTW]</s>Piston soaking in PB blaster<e></e>[/URL]
<s>[url=https://drive.google.com/op...]</s>cylinder exterior... I know, it's bad<e></e>[/URL]
Once I get hydraulic fluid pumping again, I still have a lift piston which appears to be rusted into the cylinder. My guess is all the warm water evaporating out of the dirty unchanged hydraulic fluid did this thing in. I pulled the lift housing off to investigate because the lift arms moved with no resistance. I was going to take a wire wheel to the exterior and give it a nice coat of AMLguard afterward. Anyone seen this part around the internet? Any techniques for freeing this up?
I also think I'll be replacing brake pads as both pedals offer no resistance. My shopping cart at Hoye is growing. But hey, the thing runs! Good thing I like projects.
Thanks in advance,
Aaron