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Tractor Talk Discussion Forum

MF noise on hydraulic pump

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sebas

09-15-2004 12:25:06




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the pump on my MF tractor is "knoking" under load on the lift arms or using remotes. What could cause this noise?
Is the pump getting weak or something?




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sibby(Aus)

09-15-2004 21:29:17




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 Re: MF noise on hydraulic pump in reply to sebas, 09-15-2004 12:25:06  
sebas, The noise you hear is normal when lifting a heavy weight or if you position your control lever in constant pumping. The hyd pump is located by two dowels and the pump rocks under load and chatters and knocks.cheers.



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marlowe

09-15-2004 17:06:46




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 Re: MF noise on hydraulic pump in reply to sebas, 09-15-2004 12:25:06  
you did NOT say what size MF but this is no big deal all the pumps in MF have a knock under heavy load



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TomTX

09-15-2004 16:41:42




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 Re: MF noise on hydraulic pump in reply to sebas, 09-15-2004 12:25:06  
Post on the MF board and BigDean will help you.



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newbie

09-15-2004 15:03:22




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 Re: MF noise on hydraulic pump in reply to sebas, 09-15-2004 12:25:06  
Sounds like air in the system. Check all of your fitting on the suction (large port)side of your pump. look at all return lines from your cylinders and any quick disconnects the popppets sometime stick open just enough to suck air.



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Ben in KY

09-15-2004 12:56:03




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 Re: MF noise on hydraulic pump in reply to sebas, 09-15-2004 12:25:06  
How old is the fluid ? Any water in it ? Could it be sucking air ? Filter plugged up ?



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