Section 9
Troubleshooting
20479300
2-2012/Rev 01
9-6
Table 9-1
S50 Troubleshooting Guide
Malfunction Indication Comments
14.
Water leaking from the
weep hole on the hydraulic
cylinder head flange
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.
Damaged high pressure
cylinder
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.
Check the inside diameter of the
cylinder for expansion where the
high pressure seal assembly is
located. If detected, replace the
cylinder.
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