Preventive maintenance
82 811390 Operator Manual DynaMAX 550P/560P/575P Waterjet Pump
Parts, tools, and materials
Do this task when the pump is not running.
1. Remove the drain valve plug.
2. Open the drain valve lever on the bottom of the hydraulic fluid tank. Use a hose or a pipe to
direct the hydraulic fluid into a container.
3. Disconnect the lower ends of the hydraulic hoses to drain them.
4. Install a new hydraulic filter. Refer to Replace the hydraulic filter element on page 80 for
instructions.
5. Remove the access cover on the tank.
6. Use a strap wrench to remove the suction strainers in the tank.
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
Clean towels
Isopropyl alcohol
Standard 9/16-inch open-ended wrench
(for the drain valve plug)
Standard 15/16-inch crowfoot wrench or socket
(for the access cover)
Torque wrench
Strap wrench
Hose or pipe for draining hydraulic fluid
Container for used hydraulic fluid
Recommended materials
Clean funnel
1 Drain valve plug
2 Drain valve lever
1 Suction strainer, 1-1/2 inch
(to the gear pump)
2 Suction strainer, 2-1/2 inch
(to the hydraulic pump)
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