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Old 03-06-2011, 04:34 PM
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mike33087 mike33087 is offline
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cat 416b backhoe boom issues

I have a 95 cat 416b backhoe, recently i replaced all of they hydro lines on the boom because they were worn and close to blowing. after changing them i topped off the fluid and started the machine. some functions work some don't some i have to use both levers for one action. im pretty certain i put the lines in the right spots, do i have to bleed the cylinders or could one be air locked? any help / diagrams would be appreciated. thanks
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Old 03-06-2011, 07:32 PM
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bobcat_ron bobcat_ron is offline
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Crack the fittings loose and try again, you got major air trapped in the lines.
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Old 03-07-2011, 11:33 AM
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mike33087 mike33087 is offline
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so do i just crack the fittings let some fluid run out then tighten them up and run it again? and suggestions if this does not work?
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Old 03-07-2011, 11:50 AM
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bobcat_ron bobcat_ron is offline
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Crack a fitting and just let the machine idle and move a control for the hose a bit.
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Old 03-07-2011, 04:49 PM
A.EXCAVATING A.EXCAVATING is offline
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check all your hoses again and then crack the lines if its straight fluid coming out you should be find but least bit of air and it will mess you all up
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Old 03-07-2011, 06:43 PM
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wanabe wanabe is offline
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Deere dealer told me once that after replacing a line or cylinder to just pull the controll lever and hold it in place for a few sec, then cycle the controll the other way and hold for a few seconds again to get the air out, and that seemed to work.
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Old 03-07-2011, 09:48 PM
bearmtnmartin bearmtnmartin is offline
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Quote:
Originally Posted by wanabe View Post
Deere dealer told me once that after replacing a line or cylinder to just pull the controll lever and hold it in place for a few sec, then cycle the controll the other way and hold for a few seconds again to get the air out, and that seemed to work.
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Old 03-07-2011, 09:50 PM
bearmtnmartin bearmtnmartin is offline
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Quote:
Originally Posted by wanabe View Post
Deere dealer told me once that after replacing a line or cylinder to just pull the controll lever and hold it in place for a few sec, then cycle the controll the other way and hold for a few seconds again to get the air out, and that seemed to work.
Having had a pos 416 b and replaced way too many lines, I would suggest that you have a couple crossed.....I don't remember ever having to bleed anything. They just shudder for a bit and then go.
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Old 03-08-2011, 11:05 AM
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mike33087 mike33087 is offline
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does anyone know where i can get a diagram for the lines?
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Old 03-08-2011, 04:23 PM
A.EXCAVATING A.EXCAVATING is offline
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Just go to your local cat dealer and ask them for a diagram and they should print something out for you
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