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Model PH90Operating Procedures
Mix Hopper Assembly
With the parts trays available:
Step 1
Inspect the rubber pump parts. O- rings and gasket
must be in 100% good condition for the pump and
entire machine to operate properly. The o- rings and
gasket cannot properly serve their intended function if
nicks, cuts, or holes in the material are present.
Replace any defective parts immediately and discard
the old.
Step 2
Assemble the piston. Slide the red o- ring into the
groove of the piston. DO NOT lubricate the o- ring.
Figure 46
Step 3
Apply a thin layer of lubricant to the inside of the pump
cylinder at the retaining pin hole end.
Figure 47
Step 4
Insert the piston into the retaining pin hole end of the
pump cylinder.
Figure 48
Step 5
Assemble the valve cap. Slide the red o- ring into the
groove of the valve cap. DO NOT lubricate the o- ring.
Figure 49
Step 6
Slide the pump valve gasket into the holes on the cap.
DO NOT lubricate the gasket.
Figure 50
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