SECTION IV. OPERATION UNDER UNUSUAL CONDITIONS
2-19. OPERATION IN EXTREME COLD
a. After firefighting, remember to drain residual water from all piping as detailed.
b. Be sure that all procedures and lubrication recommendations to maintain the vehicle operational in cold
weather are followed.
Doors and access panels may freeze shut and walking surfaces
become slippery and hazardous from formation of ice in freezing
weather. Be sure that all ice is removed as quickly as possible.
2-20. OPERATING IN EXTREME HEAT
a. When operating in a very hot environment, pay extra attention to the engine and transmission
temperature and oil pressure gauges. Open ENGINE COOLER valve handle located above PRIMER
valve handle on pump panel when pumping.
b. Be sure that lubricant and coolant recommendations for operation under extreme heat conditions are
2-21. OPERATION IN AREAS WITH SALT AIR AND MIST
a. In areas where salt air and sea spray are common, measures must be taken to protect the vehicle from
corrosion. Use wax and/or other surface protection agents frequently on painted and chrome plated
surfaces. Coat all other exposed metallic surfaces with protective oil as necessary.
b. If salt water is used for firefighting, the firefighting system, including ail hoses used, should be flushed
with potable water on return to base.
The pump is designed for use with fresh water. Therefore, if salt
water is used, the pump must be flushed with fresh water to
prevent corrosion of pump components.
2-22. OPERATION IN SNOW
a. Operating in areas with heavy snowfall can cause problems unless walkways, hose beds, and control
equipment are continuously cleared of snow. If not cleared frequently, the equipment including exposed
controls may become difficult to operate.
b. When driving through deep snow or snow banks, engage the interaxle differential lock.