Section II. Operation Under Unusual Conditions
Operation in extreme cold (below O°F)
General. At extremely low temperatures, lubricants used for normal temperatures stiffen and lose much of their
lubricating effect. Metals become more brittle and lose some of their ability to withstand shock. Engine coolant requires
special attention. Batteries and wiring are also adversely affected by extreme cold.
Lubrication. Refer to the lubrication chart (Fig. 3-1) and lubricate. Change the lubricants as indicated for
specific temperature ranges shown in Fig. 3-1, 4 of 4.
Operational Precautions. Avoid all unnecessary shock loads when operating winch. Take up all cable slack and
increase tension on cables gradually to avoid sudden stress.
Refer to Table 2-1 and add necessary anti-freeze mixture to engine cooling system.
Check coolant frequently to make sure there is sufficient anti-freeze.
Fuel Tank. Keep fuel tank as full as possible at all times to prevent condensation of moisture in tank. Be sure to
use proper grade of fuel.
Electrical Wiring. Disturb electrical wiring as little as possible to keep it from becoming brittle.
Inspect cables and battery for damage. Clean battery and cables as necessary and make sure battery
terminals are clean and tight.
Make sure battery filler cap vent holes are open. Keep electrolyte level 3/8 in. above battery plates.
To prevent battery from freezing, keep fully charged.
2-8 Operation in extreme heat
Inspect engine coolant level frequently and maintain proper level. Avoid using water that contains
substances likely to cause rust or scale.
Make sure all "V" belts are properly adjusted.
Lubrication. Refer to lubrication chart (Fig. 3-1) and lubricate unit more frequently. Clean any oil or foreign
matter from exterior of engine and winch.
Table 2-1. Anti-freeze Mixture