Jinma 224 Loader does not lift or tilt: Jinma Farmpro Agracat  -- Chinese Tractors Discussion Forum and Review Jinma 224 Loader does not lift or tilt: Jinma Farmpro Agracat -- Chinese Tractors Discussion Forum

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Discussion Boards > Active Subjects > Messages as Posted > Jinma Farmpro Agracat Forum

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 12-13-2009, 20:00 Post: 167465
pjells



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 Jinma 224 Loader does not lift or tilt

I have a Jinma 224 with a FEL. The loader suddenly stopped working. The power steering works and the 3pt works. The bucket will lift if I move the steering wheel back and forth. The bucket is tipped all the way forward and moving the steering wheel does not help to tip it back. I am guessing it is a problem with the loader control but have not found anything obvious wrong with it. Is there a any way to diognose the control further before replacing it? Any help would be appreciated.

-Pete






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 12-13-2009, 20:27 Post: 167467
earthwrks

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 Jinma 224 Loader does not lift or tilt

If it's like my New Holland, each system has it'own pump. Sounds like yours is shot. Have you run it out of fluid or had it low enough on a slope that it sucked air?






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 12-14-2009, 00:19 Post: 167472
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 Jinma 224 Loader does not lift or tilt

Quote:
Originally Posted by pjells | view 167465
The bucket will lift if I move the steering wheel back and forth.

It's a vented system (self-bleeding) so air isn't ordinarily an issue. The vent doubles as fill plug and dipstick, it's behind the operator seat. I clean mine out with solvent and compressed air at least once a year, which is usually enough to keep it breathing.

There's only one pump. But there's also a priority valve that splits the steering sub-circuit off from the main loop. I believe your problem may be a partially obstructed priority valve. It's located on the right side of the engine, just forward of the brake pedals. That said, whatever dirtied up the priority valve may have partially obstructed the curl control (valve) as well. Once these valves are disassembled for inspection/cleaning, folks often find either strands of Teflon tape (that shouldn't have been used in the first place) and/or chunks of damaged O-ring.

//greg//






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 12-14-2009, 07:52 Post: 167474
hardwood

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 Jinma 224 Loader does not lift or tilt

I'd go along with the priority or diverter valve, both the same thing I think. I had a Case 1370 tractor once that was the opposite, the power brakes wouldn't work till you did something else hydraulic powered, turning sterring wheel a bit made them kick in. The brakes would still stop the tractor but they were non power assisted. Scarry at times.






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 12-14-2009, 08:31 Post: 167475
pjells



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 Jinma 224 Loader does not lift or tilt

The Loader control inlet line comes directly from the pump, then the outlet goes to the steering diverter valve, so I am assuming that my problem must be in the loader control. I know that there is some sort of diverter valve in the loader control but I don't see anything wrong with it although I don't really understand how it works either.






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 12-14-2009, 08:59 Post: 167476
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 Jinma 224 Loader does not lift or tilt

Quote:
Originally Posted by pjells | view 167475
I don't really understand how it works ...

That's why we're here to help. Don't discount the priority valve though. The fact something outside the steering sub-circuit can be made to work by turning the steering wheel - is a classic symptom of a problem in the priority valve. When there's no steering input, the PV is supposed to close - which routes all fluid around the main circuit (loop), which in your case runs the loader and rear hitch. But a malfunctioning PV can stick open - or partially open - unnecessarily feeding the steering circuit at the expense of the main circuit. Turning the steering wheel of a PV that's malfunctioning (dirty) in this manner has the effect of (temporarily) returning some flow back to the main loop.

When this happens - and your loader will lift but not curl - gives evidence that the curl valve is dirty too. Your loader and control valve types remain unknown, but typically there is no additional priority valve associated. More common is a controller that consists of (a) lift valve, (b) curl valve, and (c) relief valve. Two out of those three appear to be ok, but only when provided fluid by turning the steering wheel.

Make more sense now?

//greg//






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 12-17-2009, 10:15 Post: 167545
affordable



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 Jinma 224 Loader does not lift or tilt

On the backside of the loader valve are 2-caps with 2- screws in each one, remove the 2-screws and confirm that everything is tight underneath them, if it is I would look at the relief valve on your loader valve.

Tommy
Affordable Tractor Sales






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 01-06-2010, 12:35 Post: 167920
pjells



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 Jinma 224 Loader does not lift or tilt

FYI: To anyone reeading this who has the same problem. I isolated the problem to the loader valve. I did a little reasearch adn found the original valve was a P.O.S. anyway so I replaced it with a new style. I purchased it from ronald@ranchhandsupply.com. The FEL now works better than it ever did. It is faster and smoother. The price was a little hard to take but I didn't want to replace the old valve with another P.O.S valve and be in the same situation again.
Hope this helps,
-Pete






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 01-06-2010, 13:56 Post: 167923
auerbach



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 Jinma 224 Loader does not lift or tilt

P.O.S.
Product Of Shanghai.






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 06-23-2011, 12:55 Post: 179139
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 Jinma 224 Loader does not lift or tilt

hi i have sort of the same problem. one of my main pump hoses broke and the pump got hot. i rebuilt the pump and everything works but the loader, her is the kicker, the bucket will work only when i turn the steering to the right or left and hold it tight and i can see the line from the pump get pressured up, the bucket will go up and holds the pressure but will tilt only on the way down. could this be the loader valve. thanks






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