TM 10-4320-310-14
2-8.
OPERATION IN HIGH ALTITUDES
The operating efficiency of the engine diminishes at higher altitudes. Be sure that engine is operating at peak efficiency.
2-9.
OPERATION IN SANDY OR DUSTY AREAS
CAUTION
Monitor air cleaner intake restriction Indicator more closely In
sandy or dusty locations. At first sign of restriction, change air
filter.
a.
If red band appears in window of air cleaner restriction indicator and rain hood is not blocked and no damage
to system components is found, replace air filter. Refer to paragraph 34.
b.
With engine stopped, inspect frequently to be sure that cylinder cooling fins are clean and free of dirt that
inhibits cooling.
c.
With engine stopped, inspect frequently to be sure that blower ring is clean and free of dirt.
d.
With engine stopped, inspect frequently to be sure that engine oil is to top mark on dipstick. Add oil, if
necessary, to bring level up to top mark.
e.
During refueling and PMCS, be sure that sand or dust is not allowed to enter fuel or lubrication system.
f.
If centrifugal pump is not in use and suction and/or discharge hoses are not installed, be sure that suction
(intake) and discharge couplings are covered with dust covers.
g.
Be sure that frequency of PMCS is increased in accordance with local conditions and requirements.
2-32
