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need some help a.s.a.p please

Discussion in 'Heavy Equipment' started by CAT420, Dec 3, 2008.

  1. CAT420

    CAT420 Senior Member
    Messages: 182

    Im hoping there is someone on here which im sure there is that can help me out. At work we have been having some trouble since we bought a 2002 CAT 420 with its hydraulic power. We have since changed the hyrdo oil filter and it still seems like it doesnt have enough power as it should( no backhoe down pressure/ slow response). also the oil pressure light came on yesterday but then after shutdown and restart it has since not returned and there is plenty of oil?? Its in the shop now and were trying to get it ready for snow a.s.a.p so im open to any solutions.

    NICHOLS LANDSCA PlowSite Veteran
    Messages: 4,286

    I had the same type of thing happen to my 304 mini excavator it was the relief valve, was about a $120 part. Took me about 20 min
  3. CAT420

    CAT420 Senior Member
    Messages: 182

    Thanks ill give it a look
  4. L70

    L70 Junior Member
    Messages: 25

    how did you make out?