Maintenance And Repair; Cleaning And Care - Bosch Rexroth 4WRPD Operating Instructions Manual

10 Maintenance and repair

Bosch Rexroth valves are usually maintenance-free.
The valve seals are subject to a process of natural wear and aging. It is therefore
recommended that the valves be replaced at appropriate time intervals. The
intervals are mainly determined by the operating conditions and the cleanliness of
the hydraulic fluid.
▶ Regularly check the product and mounting surfaces for leak-tightness!
▶ Replace the seals at reasonable intervals as a precautionary measure.
Preventive maintenance (e.g. hydraulic fluid care) as well as compliance with
the pressure and temperature specifications extend the lifecycle of the valve,
the system and the hydraulic fluid.

10.1 Cleaning and care

Ingress of contaminants and humidity!
Malfunction.
▶ Always ensure absolute cleanliness when working on the valve!
▶ Only use a dry and dust-free cloth for cleaning.
Solvents and aggressive cleaning agents!
Damage and accelerated aging of the valve.
▶ Do not use aggressive cleaning agents for cleaning, but only a dry and dust-
free cloth.
Proceed as follow for cleaning and care:
▶ Carry out a visual inspection and check that all screws are tightened and hoses
fit properly.
▶ Check all plug-in and clamping connections of the valve for correct seat and
damage at least once a year.
▶ Check cables for rupture and crushes. Have damaged or defective cables
replaced immediately!
▶ Clean housing parts with a dry and dust-free cloth.
RE 29391-B/05.2021; 4WRPD(H), 4WRPQ(H), 4WRPF(H), 4WRLD, 4WRLF, 4WRLQ, 5WRPF10, 5WRPQ10, Bosch Rexroth AG
Maintenance and repair
NOTICE
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