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TM 10-4320-307-10
Table 2-2. Operator/Crew Preventive Maintenance Checks and Services (Cont)
Item
Location
Not Fully
No.
Interval
Item to
Procedure
Mission Capable
Check/Service
if:
33
During
3-Way Selec-
WARNING
Category Class
tor Valve and
Death or serious injury could occur if
Ill fuel leaks or
Fuel Line As-
diesel fuel is not handled carefully.
fire hazard leak-
-
sembly.
Use in a well-ventilated area away
age are found.
from open flame, arcing equipment,
ignition sources, heaters, or excessive
heat. Be certain that fuel lines and
connections are secure. Do not inhale
vapor. Do not over fill fuel tank.
Engine must be turned off and cooled
before refueling. Use proper refueling
procedures and equipment to avoid
spillage. Do not run engine near open
fuel containers. DO NOT SMOKE.
CAUTION
Both supply and return 3-way fuel
valves must be aligned to the same
selected fuel supply (auxiliary or unit
tank). Alignment to different supplies
could cause engine overheating, shut-
down from rapid fuel exhaustion, or
fuel system overflow and the
associated fire hazards.
Visually check for fuel leaks at 3-way valve stems (1),
cap plugs for auxiliary lines (2), connectors (3), and
fuel line assemblies (4).
2-31
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