Husky Sanitary Diaphragm Pump 3150

CAUTION: Do not over-lubricate the pump. Oil is exhausted through the muffler and could contaminate your fluid supply or other equipment. Excessive lubrication can also cause the pump to malfunction.

Did you remove the hose from the pump air inlet?

Add two drops of machine oil to the air inlet.

Did you add the correct amount of oil?

Sign off on the air valve lubrication

Check/tighten fluid connections

Before each use, check all hoses for wear or damage, and replace as necessary. Check to be sure all connections are tight and leak-free.

Manifolds and ball check valves removed

Fluid covers and diaphragm assemblies removed

Screws holding the air covers to the center housing removed using a 10 mm socket wrench

Air cover gaskets removed and replaced with new ones

Diaphragm shaft bearings, air valve bearings or pilot pin bearings removed using a bearing puller

U-cups removed and inspected, parts replaced as needed

Six screws, air valve cover, and gasket removed with a Torx (T20) screwdriver or 7 mm (9/32 in.) socket wrench

Valve carriage moved to the center position and pulled out of the cavity

Pilot block pulled straight up and out of the cavity using a needle-nose pliers

U-cups removed from the pistons

O-rings removed from the pilot pins

Pressure relieved and all hoses disconnected

Pump removed from its mounting and drained

Both upper clamps removed from the outlet manifold

Outlet manifold removed leaving elbows, gaskets, clamps, and tee assembled

For 3A Ball Check pumps: ball gasket removed

Middle clamp and ball stop housing removed

Lower clamp, seat, and gasket removed