MCF
Member
We just bought a Hitachi EX100-2. When we went and looked at it, ran great, hydraulics were fast, but were unable to actually dig with it. When we got it home and went to dig a hole I was very disappointed. Hydraulics are fast, but it is short on hydraulic power. I checked pressure at the pump and it is 4-4200 psi. I tightened the main relief valve the last 1/2 turn that it had left and no change in pressure. I pulled the relief valve out replaced all o-rings and zero change. I ordered a new relief valve thinking this one is just shot, that will be in next week. Does anyone have any other ideas of what could be wrong? Also does anyone have a parts book for this machine that they would part with?
Thanks in advance,
Andy
Thanks in advance,
Andy