Preventive maintenance
80 811390 Operator Manual DynaMAX 550P/560P/575P Waterjet Pump
1. Make sure that the drain valve is closed.
2. Remove the filler-breather cap on top of the tank.
3. Fill the tank with hydraulic fluid until the fluid is at the top mark on the sight gauge.
4. Install the filler-breather cap.
Check the hydraulic fluid quality
Do this task when the pump is not running.
1. Make sure that the drain valve is closed.
2. Look through the sight gauge to see the color of the hydraulic fluid. Good hydraulic fluid is
almost transparent.
3. Remove the filler-breather cap on top of the tank.
4. Smell the hydraulic fluid. Good hydraulic fluid has almost no odor.
Replace the hydraulic filter element
Parts, tools, and materials
Do this task when the pump is not running.
Do this every work shift.
Replace the hydraulic fluid:
• If it is dark or milky in color
• If it has a strong odor
• After every 3,000 hours of operation
Contact a hydraulic fluid supplier for a precise report about your hydraulic fluid quality.
Replace the hydraulic filter:
• Every 1,500 hours
• When the white indicator bar stays in the red zone while the pump is at operating temperature
Refer to Replace the hydraulic filter element on page 80 for instructions.
Hydraulic fluid replacement kit
1-12084 DynaMAX 5-series standard Tool kit
Antiwear (AW) mineral oil or synthetic hydraulic
fluid, ISO viscosity grade (VG) 32 or 46
Torque wrench
15/16-inch crowfoot wrench or socket
Recommended materials
Clean funnel
Clean towels
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