boom trouble with hyundai 290

samedi 23 avril 2016

just did a complete seal change on the main control valve of my hyundai 290 NLC-7, all went well apart from boom down function.
it works but has lost power and if you boom down doesnt lift the machine off the ground.
but if i do the same with arm out function it immediately lifts off ground.
do i have a wrong pipe somewhere??


boom trouble with hyundai 290

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