Graco PR70 important safety instructions Hose Assemblies, To install a new Piston Plug Assembly

Pistons

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.

Hose Assemblies

Figure 52 Piston to DV Hose Assemblies

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.

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