TM-5-3805-254-14-P-1
TRUCK, DUMP, 20 TON, 6X4, ON-OFF HIGHWAY 71,000 GVW, IHC MODEL F-5070 (CCE)
TECHNICAL MANUAL; OPERATOR'S, ORGANIZATIONAL, DIRECT SUPPORT, GENERAL SUPPORT AND DEPOT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS INFORMATION AND SUPPLEMENTAL MAINTENANCE INSTRUCTIONS)
AUGUST 1980
TM-5-3805-254-14-P-1 - Page 40 of 590
OPERATION
4.
Pull the compressions release (if so equipped).
5.
Press starter button or turn switch-key to "start"
position.
Caution:
To prevent permanent cranking motor
damage, do not crank engine for more than 30
seconds continuously.
If engine does not fire within
first 30 seconds, wait one to two minutes before
recranking.
6.
A manual override knob provided on the forward
end of the electric shut-down valve allows the valve to
be opened in case of electric power failure.
To use,
open by turning fully clockwise; return to run position
after electric repair.
7.
After three or four seconds of cranking, close the
compression release (if so equipped) and continue to
crank until the engine fires.
Caution:
After engine has run for a few minutes,
shut it down and allow time for oil to drain back into
pan.
Check engine oil level again; add oil as
necessary to bring oil level to "H" mark on dipstick.
The drop in oil level is due to absorption by the oil
filter and filling of the oil cooler.
Never operate the
engine with oil level below the low level mark or
above the high level mark.
COLD-WEATHER STARTING
To aid in starting engine when temperature is 50
deg.
F (10 deg.
C) or below, an intake air preheater is
available.
Preheater equipment consists of a hand-
priming pump to pump fuel into intake manifold, a glow
plug which is electrically heated by battery and a switch
to turn on glow plug.
Fuel burns in the intake manifold
and heats intake air.
See Fig's.
1-4 and 1-5.
Caution:
Do not use ether in conjunction with the
preheater.
To do so could result in a fire.
To use the preheater for cold starting:
1.
Set throttle in idle position.
Do not accelerate
engine during the starting procedure.
2.
Turn glow plug toggle switch to "ON" position.
Red indicator light must be on.
3.
After red light has been on for 20 seconds, start
cranking the engine.
As soon as engine begins rotating,
operate the preheater priming pump to maintain 80 to
100 psi (5.6 to 7.0 kg/sq cm) fuel pressure.
Use of
primer before the 20-second interval will wet glow plug
and prevent heating.
NOTE:
On engines equipped with an oil pressure
safety switch, the fuel by-pass switch must be in
"start" position before operating priming pump.
Hold the fuel by-pass switch in "start" position until
engine oil pressure reaches 7 to 10 psi (0.5 to 0.7
kg/sq cm); then, move to "run" position.
4.
If engine does not start within 30 seconds, stop
cranking.
Wait one to two minutes and repeat cranking
operation.
5.
After engine starts, pump primer slowly to keep
engine idling smoothly.
In cold weather this may require
4 to 5 minutes or longer.
Do not accelerate engine.
6.
When the engine has warmed up so it does not
falter between primer strokes, stop pumping.
Close and
lock primer.
Turn off glow plug toggle switch.
(Red
indicator light will go out).
34
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