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Hydralic pump

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markp

03-24-2002 11:04:19




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the old B that I have has a hydralic pump on it. When it is engaged it sounds like a piston working. the ram extends fine but it sort of jumps out about a inch every time the sound is heard. I am not familiar with hydralics very much espesicially on a 46 allis B. Is this normal operation? or should the ram extend smooth with very little sound? any help will be appreciated.




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steve

03-24-2002 20:44:59




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 Re: hydralic pump in reply to markp, 03-24-2002 11:04:19  
the hydraulic oil, axle oil, and transmission oil are all the same. the hydraulics sound like that sometimes when it is sucking air, low oil level, or too thick of oil. i would drain all three cavities below the transmission, differential compartments and see what it looks like. dont put in 90 wt, use trans hydraulic fluid. you can get it at Wal Mart or farm store. 2.5 gallons is about right, migh take a little more.

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markp

03-24-2002 20:48:23




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 Re: Re: hydralic pump in reply to steve, 03-24-2002 20:44:59  
thanks I'll check it tomorrow



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Bryan Smith

03-25-2002 05:24:26




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 Re: Re: Re: hydralic pump in reply to markp, 03-24-2002 20:48:23  
7 quarts is the amount recommended in the manual. My two B's take slightly less than that (with hydraulic pump and pto). A good hydrualic or automatic transmission fluid will work. AGCO recommends Powerlube 7000 20w20, which sells for around $2.25 a quart or so (in a 5 gallon container, that is. No idea what it is in smaller quantities).

One of my B's raised smoothly before I removed the pump to check it out. Now it raises as you describe. In my case I feel it's air in the lines, pump, or cylinder.

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