SECTION IV. OPERATION UNDER UNUSUAL CONDITIONS -706880099

TM 5-4210-233-14&P-1

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.

WARNING

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

followed.

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.

CAUTION

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.

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