Section 9
High Pressure Water System
20412997
8-2012/Rev 12
9-37
Figure 9-28: 2-Port High Pressure Dump Valve
3. Loosen and remove the high pressure gland connection and the drain connection.
4. Remove the valve and actuator assembly from the machine.
Figure 9-29: 2-Port Dump Valve Components
5. Loosen the cylinder head on the actuator. Unscrew and remove the actuator from the
valve body.
6. Unscrew the high pressure bushing and remove the bushing, adapter cone and valve seat.
7. Remove the stem, SST backup ring and brass backup ring from the valve body.
8. Remove the seal assembly by pushing it with the seal push tool (P/N 20470413). The
assembly must be pushed out through the actuator port in the top of the valve body.
9. Discard the stem, brass backup ring, seal assembly and valve seat.
10. Clean and inspect the valve body, being careful not to damage or scratch the bore.
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