C4, TM 9-2350-230-12
TABLE 2-4.1. COLD WEATHER STARTING PROCEDURE (REFER TO FIGURE 2-14)
STEP
PROCEDURE
FIG/ITEM
NOTE. Steps marked with asterisk (*) are applicable only to vehicles with
hand pump lock and air box flame heater fuel shutoff valve
(B, figure 2-14). All other steps are applicable to all vehicles.
PREPARATION FOR STARTING
1
Traverse turret to the side and open engine compartment right exhaust grille.
*2
Open air box flame heater fuel shutoff valve.
3
Check air box flame heater accumulator pressure gage. Pressure indicator
should be in cold start area of gage. If not, use accumulator hand pump to
increase pressure:
*a. Release accumulator hand pump lock.
b. Turn pump handle to release from detent, and actuate handle
to increase pressure.
4
After attaining required pressure, rotate pump handle to engage detent.
*5
Position hand pump lock to locked position.
6
Close engine compartment exhaust grille.
STARTING
7
Place transmission shift lever in "N" (neutral) position.
8
Turn vehicle master switch ON.
9
Turn speed/RPM indicator switch to RPM.
NOTE. If engine coolant heater has been operation, proceed to step 11.
10
Pull out on fuel shutoff control knob, hold starter switch in START, and
hold air box flame heater switch to ON position for 15 to 20 seconds.
11
Push in fuel control shutoff knob, continue to hold starter switch in START,
and cycle flame heater switch on and off 1 or 2 times per second, with a
2 second pause in the OFF position every 7 to 10 seconds until engine
reaches 400 to 500 RPM, then depress accelerator half way and disengage
starter switch.
NOTE. If engine does not commence firing after a total of 40 seconds of
cranking or if the indication of cylinder firing ceases for a
period of over 10 seconds, stop cranking and check the air box
flame heater system components for proper operation. If a
malfunction is evident, notify organizational maintenance personnel.
12
With brakes locked, move transmission shift lever to 4th position and 2-9
continue operation of the engine at 1200-1500 RPM until coolant temperature
gage indicates 120 to 140F. If transmission high temperature warning
light illuminates, shift to "N" (neutral) and idle at 1200-1500 RPM until
light goes out.
*13
Reopen right exhaust grille and close flame heater fuel shutoff valve.
Close grille.
RECHARGING ACCUMULATOR
NOTE. When through with vehicle operation for the day, reopen right
exhaust grille. Recharge accumulator as follows:
*14
Open flame heater fuel shutoff valve.
*15
Move hand pump lock to unlocked position.
16
Release hand pump from detent position.
17
Run engine is neutral at approximately 2000 RPM until no further increase
in pressure is apparent on accumulator pressure gage.
18
Return hand pump to detent position.
*19
Move hand pump lock to locked position.
*20
Close flame heater fuel shutoff valve.
21
2-20.2