GENERAL MAINTENANCE INSTRUCTIONS - CONTINUED
HYDRAULIC SYSTEM MAINTENANCE - CONTINUED
Solvent cleaning compound MIL-PRF-680 Type III is an environmentally compliant and low toxic
material. However, It may be irritating to the eyes and skin. Use protective gloves and goggles. Use in
well-ventilated areas. Keep away from open flames and other sources of ignition.
Improper cleaning methods and use of unauthorized solvent cleaning compound may injure personnel
and damage equipment. Refer to TM 9-247 for correct information.
Fire extinguishers should be placed nearby when using solvent cleaning compound.
Cloths or rags saturated with solvent cleaning compound must be disposed of IAW authorized facilities'
Eye shields must be worn when cleaning with a wire brush. Flying rust and metal particles may cause
injury to personnel.
Particles blown by compressed air are hazardous. DO NOT exceed 15 psi (103 kPa) nozzle pressure
when drying parts with compressed air. Use a maximum of 30 psi (207 kPa) when cleaning compo-
nents. DO NOT direct compressed air against human skin. Failure to follow this warning may result in
serious injury or death. Make sure air stream is directed away from user and other personnel in the area.
To prevent injury, user must wear protective goggles or face shield.
Clean up all spills and leaks with rags. When gasket is taken off, clean area with solvent cleaning compound P-D680
Inspect tube and hose nuts and fittings for bad threads. Replace bad nuts and fittings.
Take protective caps or plugs off all tubes, lines, fittings, receptacles and connectors before they are installed.
Make sure connection points and insides of all tubes, lines and fittings are clean before installing them.
Sealing compound and solvent burn easily and can give off harmful vapors. To avoid injury, keep away from
open fire and use in a well-ventilated area.
Before you put connection points together again, wipe off openings with solvent cleaning compound P-D-680 and a
clean rag. If sealing compound was used around connection points, make sure it is removed.
Put a light coat of lubricant, same as lubricant in system being worked on, on all preformed packings before installing
Lubricating oil MIL-L-23699 or MIL-L-7808 can cause skin rash. If oil gets on skin or clothing, wash with
soap and water.
Put clean lubricating oil on all threads, except pipe (tapered) threads, before you screw parts together.
Always screw on and tighten tubes, hoses and fittings by hand to ensure they are not cross-threaded. Tighten with two
wrenches whenever possible until you feel solid resistance, then tighten 1/4 turn more.