TM 9-4940-549-14&P
b.
Lubrication,
Strainers and filters will have to be replaced more of-
ten than usual. Take care to clean dust and dirt from the lubrication
points before applying lubricant. Clean the area around the oil fil-
ler cap and oil level gage before checking oil level or adding oil.
Cooling System. Inspect cooling system frequently for leaks and
c.
improper operation. Keep radiator filler cap tightly secured and be
sure the fan belts are adjusted to the proper tension. Clean and
flush the cooling system regularly.
Fuel System. Take all precautions to keep the fuel and fuel system
d.
free from dust and foreign particles. Inspect the filters more fre-
quently than under normal circumstances.
e.
Dynamotor-Welder. Inspect the dynamotor-welder filter screens fre-
quently to keep dust and dirt to a minimum.
OPERATION UNDER RAINY OR HUMID CONDITIONS.
General. Provide adequate ventilation and shelter to protect the
a.
shop set from rain and humidity. Remove any coverings during dry
period to aid in drying out the shop set and components.
b.
Keep fuel tank full to avoid condensation in the tank.
Fuel System.
Dynamotor-Welder. Do not attempt to weld in the direct presence of
c.
rain or when condensate is forming on metal parts in an extremely
humid atmosphere.
OPERATION IN SALT WATER AREAS.
General. Wipe the exposed surfaces of the body interior and exter-
a.
ior, as well as all component surfaces, with clean, fresh water. Be
careful not to contaminate the fuel system or damage the electrical
system with the water.
Protection. Remove all rust and corrosion immediately. Coat ex-
b.
posed metal surfaces with rust-proofing material and apply paint or
oil as required.
Cooling System. Be sure the water used in the cooling system is
c.
not salt water. The cooling system is not intended for use with salt
water; however, salt water may be used in an emergency. After
such an emergency, be sure to drain and flush the cooling system
thoroughly.
OPERATION AT HIGH ALTITUDES. Operating difficulties at high altitudes re-
sult largely from the reduced density of the atmosphere. This affects
the shop set primarily in regards to the ventilation and cooling of com-
ponents. The dynamotor-welder AC and DC outputs are both rated at
12KW at altitudes up to 5,000 feet. To calculate either AC or DC out-
put above 5,000 feet elevation, use the following formula: (round off
to closest tenth).
