User's Manual

Pistons
312393G 41 of 50
Figure 51 PR70 Piston Plug Assembly
Key:
Ref P/N Description QTY
1 15K815 Plug 2/Machine
2 111457 Oring 2/Machine
To install a new Piston Plug Assembly:
1. Drain the machine pistons by instigating several
shots with either the tank ball valves closed (if
installed), or by activating enough shots to empty
the tanks.
2. To prevent machine movement, press
(red).
3. Remove the existing Piston plug (1) from the pump
end cap (item 8 of figure 46) with a wrench.
Remove the existing Oring (2).
4. Lubricate the new Oring with a high temperature
grease, Graco P/N 115982 or equivalent. Place the
lubricated Oring into the cap location of the end cap.
5. Re-install the piston plug (1) back into the end cap.
6. Open the tank ball valves (if installed) or put more
material into the tanks.
7. Instigate several shot to fill the pump with new
material.
8. Re-calibrate the machine, due to the procedure
performed.
Hose Assemblies
Figure 52 Piston to DV Hose Assemblies