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    I need a Crane Mechanic's help, please!

    I have a national crane 500E , I would like to ask for help as I have been overcharge by a repairing company enourmously , does National have service repair manual where it estipulates the average reparing hours, they have charge me $8000 dolars for changing the ATB override switch , the working...
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    Outrigger not retracting

    The two back outriggers are frame extendable and the two front are out and down and my control valves are joystick/lever controls that hook directly to the valves. Please see attached pictures
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    Outrigger not retracting

    OK, let me put it again there are two questions on my problem. First, only the front right outrigger is not working retracting only extending , the rest of the outriggers are extending and working properly. Second, it takes 3 o 4 times to move PTO switch until in engages and pump starts...
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    Crane service manual, parts catalog

    Dear Riland I am interested in the service manual for the National crane 571E , do you have it available? Best P. Soriano
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    Outrigger not retracting

    Dear all I am posting this as I need help urgently, I have a National Crane 571E back mounted on an International 7501, I have recently change the hydraulic pump and PTO, as well as change the seals on the directional valves control that was leaking, unfortunately I do not know why my front...
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