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The hydraulics for the front end loader and three point stopped working abruptly.One of the hydraulic hose connections popped apart. I also found the pump shaft had broken so I have replaced the pump. It seems to turn but I’m not sure if it does under load. I have checked the filter It seems clean. Do I need to prime the pump and how do I do that? Oh and by the way the power steering and clutch operate if this is useful information. It’s still not working. Any ideas you can provide to help me on the next steps to get this tractor back operational would be helpful. Thanks in advance for your input.
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I have a 454, first of all there are two hydraulic pumps on this machine, The one in back is the loader pump. The front one is the steering. I had a old international that I had to fill the suction line and pump with oil in order to get it to prime. I would put as much oil in the suction line and pump that you can get in, then start the tractor and operate your loader controls to let the air out. You must get the air out of the pump, before you can pump oil. You might also try loosening a pressure line fitting just a small amout. This tractor doesn't have a filter in the hydraulic system, but there is a suction line screen, its below the frame, towards the middle of the engine. It has a large nut on one end, From what you said you dead headed pump, meaning the pressure side was blocked and no oil could pass!. The Chinese quick disconnects are known for that problem. You should replace them and put hose clamps behind the slider, so that it can't be knocked loose. You can just plumb them in with pipe fittings if you desire. Keep in mind that the pressure would be in the range of 2000PSI Never Never check for leaks with your hand while the system is pressurized, the oil will punch the skin and leave a wound that is almost impossible to heal. I hope I haven't given you any incorrect info, it's what I would try if I had that problem.
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Everyone thanks for your input. Your information reveals the following:
1. check pressure relief valve to see if it's working.
2. prime the pump by filling the suction line and pump as possible.
3. replace all chinese quick disconnects. What do you mean by your comment “put hose clamps behind the slider”? What is a slider?
Where do I start. It seems the pressure relief valve might be a good place. Should I start here or somewhere else?
Bert, Can you tell me where the pressure relief valve on the FEL. If this is bad would it also disable the PTO?
Thanks, Cal
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You didn't say, but I assume that a quick disconnect separated and caused the pump to be damaged, If so I would rule out the relief valve at this point, as it didn't come into play, or the pump would be OK. I would assume that pump just isn't pumping. Make sure there is enough oil in the tank, make sure the suction line is full of oil, all the way up to the pump. Also double check the quick disconnects and be sure they are properly mated! If you think the loader is a problem, You can uncouple the disconnects going to the loader and reconnect them together at the tractor. Now if the three point works then you have a loader problem. If you don't understand what I'm saying, don't do anything, call someone who can help, as you could do more damage to the tractor, or even yourself. We all like to save money, but sometimes it bites us in the rear. Just ask me about the timing belt on my car!!
The sliders are the rings that you pull back to release the disconnects. Put a worm clamp behind them so they can't be uncoupled.
The PTO runs off the transmission!
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Here is what I did over the weekend.
1. loosen/remove pressure line coming out of the pump at the far end of the hose to allow air out. This did not do anything so I removed the line right at the pump. With this removed. I still don't get any oil coming out of the pump but I can definitely hear it turning/working. I only tried this a very low RPM.
I also checked the incoming side. I appears their is oil right at the pump since it came out when I loosened the fittings.
Question is:
Do I need to run the rpm higher than idling up to get the pump to draw fluid in or is idling sufficient?
Thanks in advance for your response.
Cal
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Sounds like the pump is running in the wrong direction.
Tommy
Affordable Tractor Sales
“Your Jinma Parts Superstore”
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Sorry Cal I was away for 2 weeks building an addition to the cottage. The one I purchased is the Q45. It seems that you can't properly add links to this site so do a search on the internet for galtech valves. I'm from Canada so I went to an hydraulic shop and they recommended I purchase this valve. I have a power beyond so that my snowplow has float capabilities. Very useful when plowing snow on the cottage road.
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I got the problem resolved. I found it was cockpit error on my part when I replaced the pump. Stupid error on my part but I have learned a lot from each of you and exploring my tractor. I may as well explain my stupidity. When installing the pump I thought the plug on the intake was a gasket to seal the inlet connection so I left if there. It was truly stopping fluid from getting to the pump. With this fixed the hydraulics work great.
My tractor is working and I am grateful for all the ideas from everyone to keep me exploring.
Regards
Cal Miller
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Here's a picture of where the pressure relief valve is located. I removed all the quick disconnects and connected directly to the valve. Oldfart2 has given you some excellent instructions to follow.
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