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start, repeat the steps in the above stated order. If engine still fails in three attempts, find and elim-
inate the defect. The starter may be switched on for 15 sec only; the minimum interval between
the engine start attempts should be not less than 1 min.
Before starting the heated engine set the fuel feed pedal in the position corre-
sponding to the medium rotation frequency of the crank shaft. Switch on the starter and after the
engine starts release the starter switch key.
7.2.3 Cold engine start with use of glow-plug preheater
The procedure of cold engine start at temperature from minus 12 °
С
to minus 25 °
С
:
1. Pump the engine feed fuel system through using a fuel-feed hand-operated pump (af-
ter parking the truck longer than twenty four hours).
2. Switch on the storage batteries.
3. Put the gear lever to the neutral position.
4. Switch on the instruments turning the ignition key in the middle position.
5. Put the engine stop lever to the working position (rest it against the board).
6. Depress the glow-plug preheater switch-on button and hold it until the signal light
glows.
7. Press the fuel feed control pedal up to the position corresponding to the medium rota-
tion frequency of the crankshaft.
8. After the signal light turns on, press the clutch pedal against the stop and switch on the
starter turning the ignition key to the utmost right position and holding the button switched on.
9. When the engine starts running, switch off the starter, hold the glow-plug preheater
switch-on button pressed until the engine runs steadily, then gradually release the clutch pedal and
the glow-plug preheater button. If the engine has not started, repeat the procedure in the above-
mentioned sequence with the pauses between the starts of 1-2 min.
7.2.4 Cold engine start with the help of the engine starting preheater
The procedure of starting the cold engine at temperature from minus 25 °
С
and lower.
If anti-freeze liquid is used in the engine cooling system, warm it up and start it in the fol-
lowing order:
1. Raise the hood. Make sure that the heater fuel tank valve is open.
2. Switch the pump unit on using the switch located on the start preheater control panel for
10-15 sec.
3. Switch the fuel electric heater on using the switch located on the starter preheater control
panel (the switch is spring-loaded), and hold the switch handle in turned position for a period of
30 sec if the ambient temperature is above minus 30 °
С
and for 60 sec if the ambient temperature
is from minus 30 down to 50 °
С
.
4. Switch the spark plug on using the switch located on the starter preheater control panel
(the switch is spring-loaded), and at the same time switch on the pump unit and the electromagnet-
ic valve without switching off the spark plug. Hold the spark plug switch handle (not longer than
20 sec) until you hear specific noise from the tank which indicates the process of fuel combustion
in the burner. The properly functioning heater should start in 10-15 sec.
5. Release the spark plug switch handle (the spark plug is switched off). A continuous even
noise in the tank indicates that the heater has started operating in a stable way. If the heater fails to
