Hi to all, i'm looking for a service manual for a hydrovane HV01RM I just picked up that's only showing 50psi on the gauge mounted on the end of the pump.
Check the brushes on the motor? not saying its this mind,but my DIY cmpressor was only going up to 10psi and looked at the brushes and they were only a couple of mm thin.
Pressures back up now with a replaced set of brushes.