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53 Jubilee 3pt

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Tony

12-17-2002 18:32:23




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I changed the o-ring on the lift piston , primed the pump and the arms raise slowly. What can be the problem?

Thanks in advance,
Tony




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ZANE

12-18-2002 18:12:04




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 Re: 53 Jubilee 3pt in reply to Tony, 12-17-2002 18:32:23  
If you have a vane pump you don't have to prime it. If it has been rebuilt or cleaned you might want to pour in a little oil but it will prime itself. The piston pump must be bled of all air before it will work.

I suspect that your problem is either with the unloading valve sticking and or the back pressure valve not working properly. Are you sure that you had the big flat O ring installed in the ram cylinder side that seals the back pressure valve and that you installed the back pressure valve right. ie you must remove the large acron nut and then back out the large hollow screw until resistance is felt on the screw before you take the top cover off. If you didn't do this it is likely that you have damaged the back pressure valve.

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Tony

12-18-2002 21:35:04




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 Re: Re: 53 Jubilee 3pt in reply to ZANE, 12-18-2002 18:12:04  
I did exactly what you said, saw it on a video I purchased. I guess the vane pump is just to old. I bought the tractor about 3 weeks ago for 1600
and have put about another 800 worth of parts into it. This morning I started it worked fine. It still won't lift heavy loads, but once its arms are up you can't pull them down, it holds. After messing with the 3pt. for a while the clutch stopped working, can start the tractor in gear but cannot get the clutch to work now. Maybe I need to sell it. The person I bought it from told me that his dad had purchased it new but that it had been sitting around for a long while. Thanks

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Al (NC)

12-18-2002 05:52:57




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 Re: 53 Jubilee 3pt in reply to Tony, 12-17-2002 18:32:23  
My neighbours was doing that after a repair because it was in the draft mode.



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Tony

12-17-2002 19:03:57




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 Re: 53 Jubilee 3pt in reply to Tony, 12-17-2002 18:32:23  
No its a vane.



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Jim Spencer S.E. Michigan

12-17-2002 19:25:08




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 Re: Re: 53 Jubilee 3pt in reply to Tony, 12-17-2002 19:03:57  
I just bought a piston pump for $500 and the lines for $84--.
The guy I bought my tractor from had guaranteed everything and the pump was bad.
So I sent him the pump and he had it rebuilt by the same shop that had rebuilt it the first time.
He tested the pump and it still was no good. The bottom line was that he had the pump repaired (4) times in all and he finally sent me $600 to buy a pump as they could not get the vane pump to put out over 300 PSI.
The piston pump works great. I hope the problem is not with your vane pump.
Maybe Zane or one of the other guys could give you some advice. While I was waiting for my pump I completely rebuilt my lift cover assembly, glad I did, works great! I made a little manifold and gage to check pressure on the pump and that is how I pinpointed the pump.
Are you sure you have all air out of the lines and pump?
When the lift arms raise slow will they lift a heavy weight? I guess I am not much help.
Jim

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Tony

12-17-2002 19:38:54




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 Re: Re: Re: 53 Jubilee 3pt in reply to Jim Spencer S.E. Michigan, 12-17-2002 19:25:08  
I guess i still have some air.



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Jim Spencer S.E. Michigan

12-17-2002 20:06:23




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 Re: Re: Re: Re: 53 Jubilee 3pt in reply to Tony, 12-17-2002 19:38:54  
There is a pipe plug on the lower right side (below the backpressure valve acorn nut) that you could loosen and let oil run out into a container to bleed the system.
You know that the backpressure drain tube is not supposed to be pointed into the intake line?
I don't know what adverse effect that may have but my tractor backpressure drain tube was going right into the intake line area.
The literature says to ensure that does not happen.
Jim

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Tony

12-17-2002 20:25:44




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 Re: Re: Re: Re: Re: 53 Jubilee 3pt in reply to Jim Spencer S.E. Michigan, 12-17-2002 20:06:23  
I apreciate your time and comments, I will try
to bleed all the air first thing in the morning.
Thanks and have a Merry X-mas.

Tony



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Jim Spencer S.E. Michigan

12-17-2002 19:00:33




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 Re: 53 Jubilee 3pt in reply to Tony, 12-17-2002 18:32:23  
Is your pump a piston pump?



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Tony

12-17-2002 19:12:23




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 Re: Re: 53 Jubilee 3pt in reply to Jim Spencer S.E. Michigan, 12-17-2002 19:00:33  
it is a vane pump.



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