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Model C722Operating Procedures
Mix Pump Assembly
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.
(See Figure 59.)
Figure 59
Step 3
Apply a thin layer of lubricant to the inside of the
pump cylinder at the retaining pin hole end. (See
Figure 60.)
Figure 60
Step 4
Insert the piston into the retaining pin hole end of the
pump cylinder. (See Figure 61.)
Figure 61
Step 5
Assemble the valve cap. Slide the o-ring into the
groove of the valve cap. DO NOT lubricate the
o-ring. (See Figure 62.)
Figure 62
Step 6
Slide the pump valve gasket into the holes on the
cap. DO NOT lubricate the gasket. (See Figure 63.)
Figure 63