The filter gauges on my 98 Putz draw when the temperature is above 45 deg F. Oil & Filters have been changed . They are new gauges. Pump seems to run fine. Any Suggestions.

Thanks.

what about the gate valve that operates the guage. with the filter off can you inspect a sloppy gate.

Eugene,

Thanks for your reply. It appears there are vents in the gauges themselves. The vents were closed. I opened them and know the problem appears to be solved. Pumping concrete is like magic. First you have some money and then $1000 disappears.