42. Operation at High Altitude
The carburetor used on this road roller compensates automatically for changes in the atmospheric density resulting
from changes of altitude. The road roller does not need special servicing or adjustment and will perform satisfactorily in
high altitude areas.
43. Operation in Rain, Snow, or Sleet
a. Engine.
(1) Keep the side doors closed when operating the road roller in rain, snow, or sleet. Install protective shields to
prevent snow or rain from entering the engine compartment.
(2) Keep the magneto, spark plugs, and spark plug cables dry. Accumulated moisture on the ignition wires and
spark plugs may cause shorts in the electrical circuit, and the engine may miss or stop.
(3) When operating the road roller in high wind and rain, drive the road roller so that the radiator faces into the
wind. This will lessen the amount of moisture and rain entering through the openings in the side doors.
(4) If it is necessary to operate the road roller in a blizzard, drive the road roller so that the radiator faces into
the wind. Install a protective shield in front of the road roller to break the impact of the wind. Cover the top
of the compression roll housing with a canvas cover and fasten the cover ends securely. Do not cover the
radiator, or the engine will overheat.
(5) Do not handle the engine ignition wiring with wet hands. Moisture is a good conductor of electricity, and
handling electrical wiring may cause serious shock. Always wipe hands dry and use woolen or rubber
gloves when handling the wiring.
b. Transmission and Gears.
(1) Cover the side doors of the road roller to prevent rain, snow,
or sleet from entering and settling on
transmission and exposed gears.
(2) Wipe off accumulated moisture and lubricate the gears as specified in LO 5-1185.
44. Operation in Humid Climates
a. Effect on Equipment. The moisture caused by humid climates condenses on the road roller and may cause
serious corrosion of all metal parts and wiring insulation. The road roller must be protected from moisture to avoid
possible short circuits or engine misfiring.
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