Troubleshooting
158 811390 Operator Manual DynaMAX 550P/560P/575P Waterjet Pump
— Water leaks from the system.
The high-pressure cylinder has
failed.
Replace the cylinder.
The check valve body has failed. Replace the check valve body.
— Hydraulic fluid leaks from
anywhere on the intensifier.
An O-ring or an energized seal
spring has failed.
Replace the component.
If the high-pressure
seal is removed from
the plunger when you
disassemble the
intensifier, replace the
seal.
The collar on a high-pressure
water fitting is not correctly
installed.
Install the fitting correctly.
A fitting on the high-pressure
tubing is not tight enough.
• Tighten the fitting to the
maximum torque value.
• Disassemble the parts and
look for flaws, deterioration,
erosion marks, or cracks.
Make sure that the mating
surfaces are smooth and
clean.
• If damage is found, replace
the component.
A tubing end is cracked or
damaged.
Replace the tubing.
A leaking high-pressure seal in the intensifier can push water past the rod seal and into
the hydraulic fluid.
Hydraulic fluid contaminated with water has a milky appearance. Contaminated
hydraulic fluid can cause damage to the hydraulic pump.
Replace the hydraulic fluid and examine all of the parts, including the inner surfaces of
the hydraulic fluid tank, the hydraulic hoses, and the seals.
It could be necessary to drain and flush other areas such as the shift valve, the
hydraulic manifolds, and the hydraulic pump.
Symptom Cause Solution
To Next Page
Loading...
