Graco PR70 Series Operation And Maintenance Manual page 42

Pistons & Metering Tubes
tighten the screw until the piston stops rotating,
then turn the screw an additional ¼ turn.
9. Select an operating mode, then retract the
pistons by pressing
10. To prevent machine movement, press
11. Lubricate the new orings with a high temperature
grease, Graco P/N 115982 or equivalent. Place
the lubricated orings into the inside circle
placements in the pump housing and pump end
caps.
12. Install the cylinder between the pump housing
and end cap, then secure the cylinder and Orings
by re-attaching the 4 end cap screws (item 6 of
figure 46).
13. Open the tank ball valves (if installed) or put more
material into the tanks.
14. Instigate several shot to fill the pump with new
material.
15. Re-calibrate the machine, due to the procedure
performed.
312393C
in the M1 screen.
(red).
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