4-9. GENERAL MAINTENANCE PROCEDURES- Continued
d. Hydraulic Hoses Tubes and Fittings
Escaping fluid under pressure can penetrate the skin causing
serious injury. Relieve pressure before unhooking hydraulic or
other lines. Tighten all connections before applying pressure.
Keep hands and body away from pinholes and nozzles which
eject fluids under high pressure. Use a piece of cardboard to
check for leaks.
If any fluid is injected into the skin, it must be surgically
removed by a doctor familiar with this type of injury or gangrene
(1) Shut down engine before servicing hydraulic system. With engine off, operate hydraulic controls in all
modes to relieve any pressure trapped in lines.
(2) Clean any dirt or debris away from hydraulic line or fitting that is to be removed.
(3) Tag and disconnect hose or tube.
(4) Cap all openings to prevent the entry of dirt.
(5) Discard all seals or O-rings that have been removed and install new seals and O-rings.
Do not twist hoses during installation. Make sure hoses will not
rub against sharp objects that may cut them.
(6) Install hoses or tubes and tighten connections securely. Do not over-tighten.
(7) Install new plastic tie straps or protective sleeves over hoses to prevent rubbing or chafng during vehicle