TM 9-6115-669-13&P
2.9.1 Operating the Engine Preheating Assembly.
The Engine Preheating Assembly can be used at 14 °F (-10 °C) or below and must be used at -22 °F
(-30 °C) or below.
a.
b.
C.
d.
e.
f.
g.
Perform the Preventive Maintenance Checks and Services (PMCS) listed as ‘Before” in table
2-9 (refer to TM 9-6115-668-13).
Open flap (1, figure 2-27) Control cabinet assembly controls and indicators are accessible.
Set MASTER SWITCH (8) to ON (Position Four):
BATTERY CHARGING CONTROL (2) and OIL PRESSURE (3) lamps light up.
Press HEATING ON illuminated pushbutton switch (6): Heating unit begins operating, and
HEATING ON lamp (6) lights up.
NOTE
The READY TO START IF HEATING IS ON lamp (4) may not light up
at temperatures above 14 °F (-10 °C), since the temperature switch
monitoring the oil temperature may perform a shutdown.
The READY TO START IF HEATING IS ON lamp (4) lights up after about 13 minutes. The
diesel engine can be started (the fan motor will continue to run for about 90 seconds).
If the HEATING ON lamp lights up before the READY TO START IF HEATING IS ON lamp
(4) lights up, press the HEATING ON illuminated pushbutton switch (6) again.
If the diesel engine is started before the READY TO START IF HEATING IS ON lamp (4)
lights up, shut down the heating system with the HEATING OFF pushbutton switch (7).
Refer to TM 9-6116-668-13, Chapter 3, Section II if the HEATING FAILURE lamp (5) lights
up, or if the READY TO START IF HEATING IS ON lamp (4) does not light up (i.e. the engine
preheating assembly is not operating properly).
2.9.2 Operating the Flame Glowplug System (Below 32 °F (0 °C)).
a.
Perform the Preventive Maintenance Checks and Services (PMCS) listed as “Before” in table
2-9(refer to TM 9-6116-668-13).
b.
Open flap (1, figure 2-28): control cabinet assembly controls and indicators are accessible.
c.
Set MASTER SWITCH (6) to ON (Position Four):
BATTERY CHARGING CONTROL (2) and OIL PRESSURE (3) lamps light up.
d.
Turn GLOWPLUG/START rotary switch (5) to GLOWPLUG and hold:
GLOWPLUG ON lamp (4) must light up within 90 seconds.
CAUTION
Do not turn the GLOWPLUG/START rotary switch (5) to the START
position until the GLOWPLUG ON lamp (4) lights.
Release the GLOWPLUG/START rotary switch (5) as soon as the
diesel engine is running under its own power.
e.
Turn GLOWPLUG/START rotary switch (5) to START and hold:
Diesel engine must start and begin accelerating within 20 seconds. BATTERY CHARGING
CONTROL and OIL PRESSURE lamps (2, 3) go out 2-3 seconds after engine starts.
If the diesel engine does not start within 20 seconds, wait approximately 30 seconds and repeat the
starting procedure.
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