TM 5-5420-202-20-1
INTRODUCTION - Continued
(3) General Cleaning Instructions.
If a steam cleaner is available, it may be used to remove any remaining dirt. After water or
steam cleaning, lubricate vehicle. Check all lubricant reservoirs for water droplets. If water is
found, drain and refill. Clean grease, oil, or dirt from all metal parts with dry cleaning
solvent, cleaning compound, or equivalent.
Use mild soap and water to clean or wash parts not made of metal. Rinse thoroughly after
cleaning with water and then dry.
Remove rust or dirt from fine-machined surfaces with dry cleaning solvent and crocus cloth, if
necessary. Do not use any other material. Be careful not to change the dimension of parts
when rubbing off rust. Coat bare metal surfaces, after cleaning, with lubricating oil.
Nameplates, caution plates, and instruction plates may rust quickly. When they are rusty,
clean parts and coat them with lubricating oil.
(4) General Maintenance Instructions
Put protective cape or plugs on all tubes, hoses, and fittings as coon as you disconnect them.
Dirt could get in and ruin the system. Do not remove cape or plugs until you are ready to
connect the system.
Replace bent, broken, or stripped bolts, nuts, screws, and washers. Bolts, screws, and nuts may
be loose if rust, chipped paint, or bare metal is around them. Tighten loose screws, bolts, and
nuts. Replace missing parts.
Inspect electric wires for broken, chafed, cracked, discolored, frayed, loose, melted, or worn
insulation. Replace or repair bad parts.
Have another soldier help aline mating ends of connectors, plugs, and receptacle on larger
harnesses. Make sure that pine and keyways line up. Tighten twist-snap type connector, plugs,
or receptacles until a click is heard. Tighten screw-on type connector until a ratchet noise is
heard to indicate that connectors, plugs, or receptacle are tight.
Look at hoses, fluid lines, and tubes for bends, wear, cracks, or leaks. Replace bad parts. Make
sure all clamps and fittings are tight. If a fitting leaks, tighten it.
Hold fitting adapter with one wrench and tighten nut with another wrench. When tightening
fittings, tighten nut snug and then tighten 1/6-turn to 1/8-turn more. If fitting leaks, loosen
nut a full turn and then tighten. If still leaking, replace defective parts.
Service, clean, or change oil filters, as applicable, when they are known to be contaminated or
clogged; service is recommended by AOAP laboratory analysis; or at prescribed hardtime
intervals.
(5) Lubrication.
Use only authorized lubricants.
All lubrication instruction are mandatory.
Change
4
3-9
