TM 5-2420-230-24-2
Fuel Shutoff Valve (005-043)
B3.9 and B5.9 Series Engines
Page 5-72
Section 5 - Fuel System - Group 05
Voltage Check
To perform the solenoid voltage check, connect the wiring
harness, and apply voltage to the solenoid with the ignition
key as follows:
1. With the key in the RUN position, check the hold-in
voltage.
2. With the shutdown lever held in the shutdown position,
move the key to the START position, and check the
pull-in voltage.
Refer to the table for synchro start voltage specification
with solenoid at 20C [68F]. Voltage requirements will be
higher as engine temperature rises; therefore, these values
are only valid with the solenoid at normal ambient tem-
peratures.
Solenoid Voltage
Minimum Voltage
Pull-in
Hold-in
12
8.5
5.2
24
17.0
9.4
CAUTION
Do not check energize-to-run solenoid operation with
governor cover removed from the fuel injection pump.
Test the shutdown solenoid on the Stanadyne DB4 fuel
injection pump by applying an electrical current to the
terminals and listening for a ''click." If a solid ``click'' is
heard, the solenoid is operating freely.
Use the following values to check energize-to-run sole-
noids with an ohmmeter:
Stanadyne DB4 Solenoid
VDC
VDC to Energize (Minimum)
12
8.8
24
17.6
When the valve on the Lucas CAV DPA/DPS pump opens,
a ``click'' can be heard.
Use the following values to check the solenoid with an
CAV Solenoid Values
VDC
Resistance Ohms
VDC to Energize
(Minimum)
12
9 @ 22C [71.6F]
9
24
36 @ 22C [71.6F]
18
L-932
