TM 5-3820-233-12/2
f. Fuel System. Keep the fuel tanks full at all times
operation.
d. Cooling System. Any signs of overheating may
to minimize condensation. If water is noted in the fuel
indicate sand or dust have clogged the cooling system
supply, dain and refill with clean fuel.
g. Crushing and Screening Unit.
passages. Flush the cooling system with clean water.
Clean radiator cases and fins of foreign matter with
(1) Keep return roll idler, pulleys, etc., free of ice
compressed air.
and snow.
e. Air Cleaners. Check the air cleaner frequently.
(2) Eliminate spillage of material by adjusting
Change the cartridge if necessary (para 3-12).
skirt board flashing.
(3) To stop ice and snow accumulation on the
driving surface and prevent slipping of conveyor belts
2-23. Operation in Rainy or Humid Conditions
use a small amount of antifreeze on the drive pulley of
a. General. High humidity conditions generally do not
the. conveyor belt.
affect the operation of the crushing unit.
h. Brakes. Drain air reservoirs after operation to
b. Fuel System. Keep fuel tanks full at all times.
remove condensation and prevent freezing.
c.
Lubrication.
Keep all moving parts well
lubricated.
2-21. Operation in Extreme Heat
d. Electrical System. Clean all moisture from wiring.
a. Cooling System.
e. V-Belts. If proper V-belt contact between the
(1) Make sure the system is clean and free
belts and drive pulley is lost due to excess rain, a slowing
flowing.
down of the RPM of the crusher will result. This will
(2) Keep the coolant level in the radiator as high
require the entire plant to be shut down.
as possible.
(3) Keep the water pump and its drive well
2-24. Operation in Salt Water Area
lubricated.
a. General. Keep the crushing unit as clean as
(4) Keep the fan belt adjusted properly. Be sure
possible in salt water areas. Salt water causes corrosion
there is no obstruction of air to the fan.
to exposed parts.
(5) Open the drain cocks on the radiator and
b. Electrical System. Keep all wiring and ignition
engine block to drain and flush the system. Fill with clean
terminals free of corrosion.
water.
c. Lubrication. Keep all lubrication points wiped
b. Engines.
clean and well lubricated. Use anti-rust lubricant on
(1) Use only the crankcase oil recommended in
exposed parts of adjustment mechanisms, clutch
the lubrication order.
controls, etc. Use generous amounts of lubricant to help
(2) Keep the engine clean. Accumulations of
seal bearings.
dust and oil form an insulation against cooling air from
the fan.
2-25. Operation In High Altitudes
c. Electrical System. Check batteries at frequent
a. General. High altitudes will have no effect on the
intervals and fill to proper level with water.
performance of the crushing unit.
b. Engine. Horsepower of the power unit may be
2-22. Operation Under Sandy or Dusty Conditions
decreased in high altitudes, thus reducing the capacity of
a. Inspection and Lubrication. Fine sand or dust will
the plant. If engine must be operated at altitudes above
penetrate into bushings and bearings. Because of this,
5000 feet, deration may be necessary. The loss of
inspect, lubricate and clean the unit more often. Remove
power at any altitude is held to a minimum on a diesel
accumulations of sand or dirt and clean lubrication
engine which utilizes a turbocharger or blower so all
fittings thoroughly be- fore attaching the grease gun.
engines will not require deration beginning at the same
b. Fuel System. Keep fuel tank filler caps tight to
altitude. Deration can be determined by the appearance
prevent sand or dust from entering fuel tank and fuel
of the engine exhaust while operating the crusher under
tank containers. Service fuel filters frequently to keep
load at the intended altitude of operation. If deration is
them free of sand and grit.
required because of excessive smoke, injector settings
c. Clutches and Brakes. Inspect clutch plates and
must be changed to reduce the amount of fuel fed to the
brake linings and blow out or wipe off any accumulation
engine (see para 4-13 for injector timing).
of sand and dirt. Failure to keep clutch plates and linings
clean will result in worn, scored drums and unsatisfactory
2-25
