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Re: FEL Suddenly dropped under load ??

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Mr. T. Minnesota

01-11-2013 19:08:48

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Thanks for the reply. It will not lift anything?? Has worked well for the past five months. When moving the lift lever to up position, the three point arms barely twitch?? They used to lift a little and then the FEL would lift. It is 8:30pm and I just completed an inspection from the side plates running with fluid, drained and removed pump and checked the exhaust and intake valves and everything appears fine. Put it back together getting minimal movement. Could the problem be in the upper mechanism? Could something have snapped? I went through this pump last summer and repaired sticky valves. Forum members suggested checking a pin that may give problems. The pin was in reasonable condition-2/3 remaining. Any thoughts are welcome. Not a happy camper!!
Mr. T. Minnesota

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Dell (WA)

01-11-2013 20:28:28

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 Re: FEL Suddenly dropped under load ?? in reply to Mr. T. Minnesota, 01-11-2013 19:08:48  
Mr yer using the weak sister corner test port to power yer FEL. There are several "schemes" to do this. One rigidly ties down yer 3-point lift arms and forces the hydraulic pressure out the corner test port to power up yer FEL. 'nutther scheme uses a lever operated valve to block the hydraulic pressure to yer 3-point lift cylinder. (leaky valve could slightly move yer 3-point lift as you've observed)

Best guess, yer seat top-cover gasket sprung a leak ...or... yer hydraulic lift pipe (you doubt? feel) just inside yer 6"-roundy dipstick plate sprung a leak. (if it leaks, it will SQUIRT across yer tranny housing)

BTW, yer weak sister hydraulic pump is rated at about 2.5gpm and 1700psi and stops pumping every time you clomp yer clod-hoppers on the clutch pedal. The preferred scheme for powering a FEL is the front pulley mounted remote hydraulic pump which is usually rated at 5gpm and 2000psi. As long as yer engine is running, you have hydraulic lift power. Kinda handy when yer backin'n'forwarding ........HTH, Dell

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Mr. T. Minnesota

01-11-2013 21:01:31

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 Re: FEL Suddenly dropped under load ?? in reply to Dell (WA), 01-11-2013 20:28:28  
You have given me a lot to nightmare about tonight??
One that caught my attention is the leaky top cover gasket. Never thought of that! If that is the case, would that not spray all over the internal cavity housing too? I used picture framing mat board for the gasket material. Is there a way to determine if that is the culprit without removing the top cover? Any other thoughts or ideas are appreciated.
Mr. T. Minnesota

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01-11-2013 21:33:12

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 Re: FEL Suddenly dropped under load ?? in reply to Mr. T. Minnesota, 01-11-2013 21:01:31  
In one of my posted I did say something about the top cover gasket. guess you many not have noticed that which is ok

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Mr. T. Minnesota

01-12-2013 02:11:44

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 Re: FEL Suddenly dropped under load ?? in reply to old, 01-11-2013 21:33:12  
You did mention the top cover gasket, but I must have been too intent on something snapped, just not my brain:) Not much goes unnoticed on this forum, keeps us going!!
Mr. T. Minnesota (4:10 AM)

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01-12-2013 07:30:06

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 Re: FEL Suddenly dropped under load ?? in reply to Mr. T. Minnesota, 01-12-2013 02:11:44  
4:10AM guess this has you worried so bad that your not sleeping LOL. One thing to do that may help is start it up with the PTO spinning and look inside for oil moving. If you see much movement that is the area that the problem is in. Yes you should see a little bit but not all that much

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Dell (WA)

01-11-2013 21:15:00

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 Re: FEL Suddenly dropped under load ?? in reply to Mr. T. Minnesota, 01-11-2013 21:01:31  
Mr T........leaky top cover gasket oughta have "squirts" when lookin' thru the 6"-roundy dip stick plate hole. Simple, eh? ........Dell

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01-11-2013 19:17:58

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 Re: FEL Suddenly dropped under load ?? in reply to Mr. T. Minnesota, 01-11-2013 19:08:48  
So your using some sort of rigging that uses the PTO driven hyd pump to work the loader right??? Never have likes that set up and sounds like you have either a relief valve problem or a internal linkage problem. On all my loaders on the fords I use a crank shaft driven pump because of the slow and weak PTO hyd driven system

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