I
I
ENGINE HARD TO START
Do steps A through F.
I
AUXILIARY POWER UNIT
ENGINE HARD TO START IN COLD WEATHER
Do steps E through F.
A
B
c
D
E
F
NOTE
Install winterization kit in extremely cold weather conditions,
0° to -65° F.
Open fuel falter drain cocks to remove water and contaminants from falters.
Check for dirty or clogged fuel filters. Replace fuel falter elements if dirty
(p 13-16).
Inspect for leaking APU fuel lines and fittings. Tighten or replace defective
lies or fittings (p 13-25 thru 13-29).
Check for dirty air cleaner filter element. Clean or replace falter element (TM
9-2350-267-10).
Disconnect lead R to glow plugs and preheater (p 6-133). Measure continuity
from preheat relay terminal to glowplugs and preheater. Meter should indicate
O ohms. If not, replace or repair lead R from relay terminal to glow plugs and
preheater. If circuit R shows continuity, disconnect lead R from glow plug and
measure resistance from each glow plug terminal to ground. The meter should
indicate 4.75 ± 1.5 ohms for each glow plug. If not, applicable glow plug is
defective; notify Support Maintenance. If it does, go to step F.
Measure resistance from preheater plug terminal to preheat terminal. The meter
should indicate 0.6 ± 0.05 ohms. If it does not, replace appropriate defective
preheater plug.
2-261
Change 4
TM 9-2350-267-20
