Have two 988H with that no longer hoist boom and curl bucket at same time. both are BXY prefix. Both issues occurred with in the past month. pump will maintain 4000 psi. boom and bucket sensor calibrations have been completed. all pins are tight and sensors are not seeing any slop (unexpected movement) Does any one have any ideas what would cause the machine to NOT perform two functions at once? The boom will raise with no issues but as soon as you attempt to curl the bucket back...
988G 988H hydraulic hoist and curl
988G 988H hydraulic hoist and curl
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