TM 5-3805-261-20
2-4.
GENERAL MAINTENANCE INFORMATION.
1.
Hydraulic System Maintenance.
WARNING
Hydraulic fluid may be absorbed through the skin. If hydraulic fluid gets on your skin, thoroughly
wash it off with soap and water as soon as possible.
Always wear safety glasses when working on the hydraulic system. If hydraulic fluid gets in your
eyes, you can be blinded.
Hot equipment can burn you. Wait until hydraulic tubes and hoses are cool enough to touch
before you start work.
Cleaning compound can cause skin rash and can give off harmful vapors. To avoid injury, use in a
well-ventilated area. Wash immediately with soap and water if compound gets on skin or clothing.
Compressed air used for cleaning purposes will not exceed 30 psi. Use only with effective chip
guarding and personal protective equipment (goggles/shield, gloves, etc.).
(1)
Clean all hydraulic connections and mating parts with cleaning compound and rags when taking them
off. If available, use compressed air to clean fittings.
(2)
Before taking off any hydraulic hoses, tubes, electrical wires, harnesses or cables, tag them to show
location. Tagging saves time and avoids errors. Remove tags after parts are installed.
(3)
Keep a suitable container under tubes, hoses and fittings even after fluid has been drained.
WARNING
Wipe up spilled fluids immediately with rags. Hydraulic fluid is slippery.
(4)
Put a rag under all connections to catch spilled fluids before you disconnect them.
(5)
Unscrew connections with two wrenches. Use one wrench to unscrew the connection and the other
wrench to hold the fitting or line to keep it from twisting. Make sure any old sealing compound or tape is removed.
(6)
Cap or plug all open hydraulic tubes, lines or fittings when you disconnect them. This will keep dirt and
dust out of the hydraulic system, and will also stop fluid from siphoning through hoses and tubes. Do not take off caps or
plugs until you are ready to connect the system.
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