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Komatsu 128-uu excavator boom will not move up or down

Komatsu 128-uu-1 excavator the boom will not move up or down

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6ya6ya
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Posted on Jan 02, 2017

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alicantecoli
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SOURCE: my excavator hitachi ex200-1 weak swing and when you swing then stop vibration begin on turn table when i stop to swing,and when i swing and lift cylinder raise,vibration on the turn table will contin

Not sure would need to have a good look ,but i suspect a safety valve isnt closing properly causing thumping within the hydraulic system which is the vibration you can feel,shouldnt cost a lot to repair providing the faulty valve can be located so return to the dealer as they will have a good idea as yours isnt the first to go wrong iam sure

Posted on Sep 24, 2012

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emissionwiz
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SOURCE: PC71 Komatsu excavator Machine purchased from india have facing problem in hard starting

You may have this posted in the wrong product category. Please select another category appropriate to the problem and re-post the problem so the correct expert will see and respond to the question..
This is for car and truck problems related to Factory Installed Systems not add on aftermarket systems.
This post can't be removed or moved, please re-post the question in the correct product category. Thanks

Posted on Oct 31, 2012

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Hi Rodney:
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Mar 06, 2015 | Cars & Trucks

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PC71 Komatsu excavator Machine purchased from india have facing problem in hard starting


You may have this posted in the wrong product category. Please select another category appropriate to the problem and re-post the problem so the correct expert will see and respond to the question..
This is for car and truck problems related to Factory Installed Systems not add on aftermarket systems.
This post can't be removed or moved, please re-post the question in the correct product category. Thanks

Oct 31, 2012 | Cars & Trucks

1 Answer

My excavator hitachi ex200-1 weak swing and when you swing then stop vibration begin on turn table when i stop to swing,and when i swing and lift cylinder raise,vibration on the turn table will contin


Not sure would need to have a good look ,but i suspect a safety valve isnt closing properly causing thumping within the hydraulic system which is the vibration you can feel,shouldnt cost a lot to repair providing the faulty valve can be located so return to the dealer as they will have a good idea as yours isnt the first to go wrong iam sure

Sep 24, 2012 | Cars & Trucks

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