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MF50C

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kirk green

04-24-2000 17:11:30




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Back hoe lifts ok but has no down pressure, switching hoses causes it to not lift but great down pressure, switching to another control valve it has great up lift and great down preassure. Stack type control valve for boom cylinder has to 2875 psi reliefs, switched them and nothing changed, good lift no down pressure. Whats up??




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M. Smith

04-24-2000 18:25:41




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 Re: MF50C in reply to kirk green, 04-24-2000 17:11:30  
try checking the check valves in that section of the valve body. They can get small pieces of metal, grit etc. under them and they will let the pressure bypass. they are located under the plugs on top and bottom of the valve sections



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