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  1. manref01

    JCB JS 205 Excuvator boom function not working

    I have jcb js 205 with problem on the boom down and bucket both extend and retract not working . I have put gauges and on the boom up l am getting 340 bars which is fine but on boom down l am getting 100 bars . Same problem is on the bucket l am getting 100 bars on both sides. What could be the...
  2. manref01

    Komatsu pc50 uu2

    Have you check you port relief valves for the two functions
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