Section 8
High Pressure Water System
20425618
5-2005/Rev 0
8-20
stroke. Polish the sealing head until it is flat and smooth. Be careful not to cause
additional damage by tilting or tipping the part while polishing.
3. When the sealing head is flat and smooth, perform a final polish with 600-grit wet/dry
sandpaper.
8.10 High Pressure Seal Assembly
The following procedure should be used to replace the high pressure seal assembly.
Figure 8-12: High Pressure Seal Assembly
Prior to removing electrical power or any high or low pressure piping, start the machine and
extend the plunger on the end to be serviced to allow full exposure when the unit is disassembled.
1. Turn the machine off and observe the appropriate Lockout/Tagout procedures.
Severe injury can result if the machine is not properly locked out. Observe
electrical Lockout/Tagout procedures before proceeding.
Ensure all pressure is relieved or blocked from the hydraulic and high pressure
circuits before proceeding.
2. Disconnect the high and low pressure water piping, following the procedure, High and
Low Pressure Water Piping.
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