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TM 10-3930-671-24
STOPPING THE ENGINE
1.
Disengage Power Take-Off.
2.
Reduce engine Speed to Idle - if hot, run engine
at idle for several minutes to cool.
3.
Move switch to OFF position.
4.
If the fuel pump is fitted with a mechanical shut
off, move the control to full close.
1.
OIL
PRESSURE
-
should
be
up
to
recommended pressure at operating speed and
over 0.5 Bar (7 PSI) at idle (800-1200 R.P.M.)
2.
AMMETER - should register "CHARGING" at all
times engine is running-a voltage regulator may
limit it to a very low reading).
3.
WATER TEMPERATURE - normal operation 81
2 C - 96-C (178 - 205°F). Higher temperatures
are acceptable with pressurized systems.
Overheating is detected by loss of coolant.
"FREQUENT READINGS OF GAUGE SHOULD
BECOME A HABIT".
4. MUFFLER RESTRICTION - should not exceed
508mm (20") water. Inspect mufflers periodically
for restrictions to prevent burned valves.
5. CLEAN AND SERVICE AIR CLEANER - as
recommended to maintain its efficiency.
6. WHEN ENGINE IS OVERHEATED - do not add
water - allow engine to cool so as to prevent
cracking the cylinder block, or cylinder head.
7. AVOID COLD-SLUDGE CONDENSATION - by
protecting
unit
to
maintain
crankcase
temperature over 135°F (57"C). Use a proper
temperature range thermostat and warm engine
up thoroughly.
COLD WEATHER OPERATION Battery condition is very
important for proper starting.
The oil used during cold weather should have a cold test
below the lowest anticipated temperatures that will be
encountered during its use. The multigrade lubricating
oils 5W-20 and 1 O0W-30 are ideal for cold starting with
its reduced initial drag until warmed up, when they
assume the characteristics of the heavier oil.
Sludge formation at low temperatures is a close second
to dirt in causing engine damage and wear. This is
formed by the piston combustion gases mixing with
8. BREAKING IN A NEW OR REBUILT ENGINE
for peak performance and economical operaton
the following adjustments should be made at end
of first day's operation;
1.
Adjust
valve
tappets
to
specified
clearances.
2.
Adjust idle speed to equipment
manufacturer's recommendation.
9. FOLLOW
PREVENTIVE
MAINTENANCE
SCHEDULES RECOMMENDED - this will avoid
troubles
which
might
cause
expensive
breakdowns and maintain your engine for
dependable and economical operation.
10. IDLING ENGINE - slow engine down to low idle
for about 5 minutes, after each operating period,
before stopping - too rapid cooling down may
cause distortion.
11. CLEAN, WATER FREE FUEL - is vitally
important to the operation of your engine and
fuel injection system. Injection pump warranty
will be affected if pump failure results from water
in the fuel. When the presence of water in the
fuel is suspected, the filter bowl should be
drained daily until the amount of water so
removed indicates that less frequent draining will
be adequate to prevent water from entering the
fuel injection pump. If more than a tea-cup full of
water is drained off, the source of ingress must
be found or else the filter bowl must be drained
at more frequent intervals.
the fine oil mist in the crankcase and condensing on a
cold surface. This condensation forms both a sulphuric
and sulphurous acid which combines with the oil to
become a highly injurious sludge. This dew point is
about 1350F (570C) . When crankcase temperatures
are higher, the contaminated gases remain in gaseous
form and the engine operates clean as long as breather
system is kept clean-however temperatures below this
will result in injurious sludge formation. It is vitally
important therefore to maintain oil and crankcase
temperatures above 1350F (57°C) as shown on the
following chart:
F-139
11 “MUSTS “ FOR YOUR ENGINES
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