Section 9
Troubleshooting
20425626
5-2005/Rev 0
9-6
S30 Troubleshooting Guide
Malfunction Indication Comments
Failed high pressure seal
assembly
Replace the high pressure seal
assembly.
Damaged plunger Check the plunger for
longitudinal scratches or flaws.
If detected, replace the plunger
or return to KMT Waterjet for
evaluation and rework.
Seal material buildup on
plunger
Polish the plunger surface
following the procedure,
Plunger Maintenance, detailed
in Section 8, High Pressure
Water System.
Check for scratches, grooves or
material buildup on the inside
diameter of the cylinder. If
detected, polish the bore
following the procedure, High
Pressure Cylinder Maintenance,
detailed in Section 8, High
Pressure Water System.
14.
Water leaking from the weep
hole on the hydraulic cylinder
head flange
Damaged high pressure
cylinder
Check the inside diameter of
the cylinder for expansion
where the high pressure seal
assembly is located. If
detected, replace the cylinder.