Section 9
High Pressure Water System
20412997
8-2012/Rev 12
9-14
9.8 Hard Seal End Caps
KMT Waterjet recommends loosening the jackbolts and removing the hard seal end caps (HSEC)
only to service the inlet check valve and the cone seat on the sealing head.
Hard Seal End Cap Removal
Prior to removing electrical power or any high or low pressure piping, start the machine from the
Maintenance Screen on the control panel. The machine will start in recirculation mode; the dump
valve will open and relieve the high pressure in the system.
Press the
RIGHT or LEFT arrow to retract the plunger on the opposite end to be serviced. The
plunger will extend in the selected direction, allowing 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.
3. Loosen the jackbolts in the hard seal end cap.
4. Unscrew and remove the HSEC from the high pressure cylinder.
5. Remove the sealing head. The sealing head may be removed with the HSEC or after the
end cap has been removed.
Figure 9-9: Hard Seal End Cap
7/8” Plunger 1-1/8” Plunger
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