Gauge Vacuum Pressure 10-30 inches of Mercury 2 1/16 inch Diameter Base UOM:EACH 5 inch you need a

5 inch you need a reducer instead

What do I check

Size 40 cm Colour Brown Action Regular stripping

When it fails you get either inconsistent chemical draw or none at all

6 inch CDS

Gauge Vacuum Pressure 10-30 inches of Mercury 2 1/16 inch Diameter Base UOM:EACH 5 inch you need aOverview Vacuum gauge, 2 1 16 inch, reading 1030 inches of mercury. HydraMaster part number 000 074 006, listed in the parts list simply as Gauge, Vacuum. Vacuum readings are the fastest diagnostic a truckmount operator has. A reading that climbs above normal points to a blockage or a closed valve downstream; one that falls away points to a leak a lid gasket, a hose cuff, or a filter left out after a service. Where it is fitted Instrument panel