HyPrecision Predictive waterjet pump Operator Manual 810120 85
5 – Preventive maintenance
Preventive maintenance
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 on page 83 for instructions.
5. Remove the access cover on the tank.
6. Use a strap wrench to remove the suction strainers in the tank.
7. Clean the inner surfaces of the tank with towels and isopropyl alcohol. Make sure that no debris is left in the
bottom of the tank.
8. Install new suction strainers.
Tighten the suction strainer by hand and then turn it 90° more.
9. Close the drain valve.
10. Install a drain valve plug.
11 . Install a new crush washer.
12. Install a new access cover gasket.
13. Replace the access cover on the tank. Torque the nut to 27 N ∙ m (20 lbf ∙ ft).
14. Remove the used filler-breather cap.
CAUTION
Remove all towels from the tank before putting hydraulic fluid in it.
Do not use soap, detergent, or solvents.
1
Drain valve plug
2
Drain valve lever
1
1-12438 Suction strainer, 1-1/2 inch
(to the gear pump)
2
1-11960 Suction strainer, 2-1/2 inch
(to the hydraulic pump)
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