Section V. GENERAL MAINTENANCE INSTRUCTIONS
This section contains general maintenance instructions for unit maintenance personnel. These instructions cover
removal, cleaning, inspection, repair, and installation procedures to be followed when maintaining the water distributor.
Disconnect the battery ground cable before removing electrical parts.
Prior to removal, clean the area around air or fuel line fittings to prevent dirt from entering into ports as the
fitting is removed. Cover or plug all open ports or lines.
Attach identifying tags to the mating ends of electrical, air, and fuel lines asthey are disconnected.
Use proper lifting devices when removing heavier components. Ensure that these devices are correctly
arranged and attached before removing attaching hardware.
Dry cleaning solvent P-D-680 Is toxic and flammable. Always wear protective
goggles and gloves, and use only in a well-ventilated area. Avoid contact with
skin, eyes, and clothes, and DO NOT breathe vapors. DO NOT use near open
flame or excessive heat. The solvent's flash point is 100°F-130°F (38°C -59°C). If
you become dizzy while using cleaning solvent, Immediately get fresh air and
medical help. If solvent contacts eyes, immediately wash your eyes and get
Do not spray or soak electrical parts such as coils, junction blocks, switches, and insulated wires in cleaning
solutions. Use a clean, lint-free cloth moistened with dry cleaning solvent (Item 7, Appendix D).
Use a cleaning compound to clean external parts and components.
Do not expose preformed packing, gaskets or other rubber materials to cleaning
solvents. The solvents will destroy them.
Use dry cleaning solvent (Item 7, Appendix D) to clean bearings and internal engine parts. If necessary,
brush caked grease and dirt from parts. Be careful not to score or damage facing parts. Spin bearings in
light lubricating oil after cleaning to remove solvent.
4-10. INSPECTION PROCEDURES.
Check all hose surfaces for broken or frayed fabric. Check for breaks caused by sharp kinks or rubbing
against other parts of the water distributor.
Inspect metal tubing lines for kinks.
Inspect fitting threads for damage.
Visually inspect all castings and weldments for cracks.
Inspect all wires for chafed or burned insulation. Inspect all terminal connections for loose connections and
Inspect all bearings and bearing cups in accordance with TM 9-214.
4-11. REPAIR PROCEDURES.
Replace all broken, frayed, crimped or soft flexible lines and hoses. Replace fittings that are stripped or
damaged. Ensure that hose clamps do not crimp hoses.
Replace all broken, worn, burned, or chafed electrical wiring. Wires with several broken strands must be
replaced. Broken strands increase the resistance of the wire and affect the efficiency of the electrical
Replace any bolt, screw, nut, or fitting with damaged threads. Inspect tapped holes for thread damage. If
cross threading or spalling is evident, drill and tap the hole for an oversize screw or stud. When retapping will
result in weakening the part, or when the cost of the part makes retapping impractical, replace the damaged
part. At times, merely chasing the threads with the proper size tap or die will be adequate.