TM 5-4320-302-14
4-35.
ENGINE SHUTDOWN VALVE (CONT)
Location/Item
Action
Remarks
3.
Engine shut-
Remove breather plug, washer,
down valve
and banjo bolt from fuel in-
jection pump by rotating
counterclockwise. Remove
and discard washers.
TEST/INSPECTION
4.
Engine shut-
Electrically test operation of engine shutdown
down valve
valve and valve solenoid. Connect pin (P2) to
ground. Intermittently apply +12 vdc to pin 1
(P1). The valve should normally be open with
+12 volts applied to pin 1 (P1) but should
close when no voltage is applied to pin 1 (P1).
These signals simulate the engine fault sensi-
tive control signals from the control panel.
Test valve is open when an electrical signal
(+12 vdc) is applied to the valve solenoid pin
1 (P1), simulating the reset signal. If either
malfunction, replace engine shutdown valve
and solenoid.
5.
Engine shut-
Inspect valve, breather plug, and banjo bolt
down valve
for damage, rust, corrosion, or restrictions in
fuel flow. If damaged, severely rusted, or cor-
roded, replace valve. If valve needs to be ad-
justed, follow adjustment procedure below.
Inspect electrical contacts on both ends of
electrical connectors at engine shutdown valve.
Inspect wiring to and from control panel. For
connections at control panel, follow procedures
in paragraphs 4-15 and 4-16. If any electrical
problems or malfunctions exist, replace wiring
and/or connectors as necessary.
4-167
