OPERATION UNDER RAINY OR HUMID CONDITIONS

TM 5-4110-234-14

TO 40R7-5-7-1

(1) Keep engine clean. Keep cooling system clean.

(2) Service air cleaner as frequently as required.

(3) Change crankcase oil and filter more often than recommended under normal conditions.

2-12. OPERATION UNDER RAINY OR HUMID CONDITIONS

The equipment is reasonably weatherproof; however, during periods of extremely wet, windy and humid weather, the

following precautions should be observed to provide maximum protection to the unit and to assure efficient operation:

a. Shield fuel tank opening on the F10000RG-2 when filling to avoid water contamination of gasoline.

b. Increase the frequency of maintenance performed on components subject to corrosion such as electrical points and

contacts.

2-13. OPERATION IN SALT WATER AREAS

a. Increase the frequency of maintenance on electrical components with points and contacts and cleaning of the

condenser tubes and fins.

b. All exposed areas should be spray-rinsed or sponged with clear water periodically to remove salt encrustations.

2-14. OPERATION AT HIGH ALTITUDES

The air pressure above sea level decreases as altitude is increased. The result is a decrease in air pressure to the

carburetor causing a too-rich gasoline-air mixture. If this condition interferes with the operation of the refrigeration unit,

report to the proper authority.

2-16