TM-9-2320-272-23-1
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 1 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-1 - Page 399 of 1313
ENGINE CRANKS BUT WILL NOT START IN COLD WEATHER (FUEL SYSTEM OPERATING PROPERLY) -
Continued
STEP
8.
IS THERMAL CLOSE VALVE OR THERMAL CLOSE VALVE TUBING RESTRICTED?
a.
Disconnect ether valve to thermal close valve tubing at ether valve (Volume 2, WP
0263).
b.
Disconnect thermal close valve to atomizer tubing at thermal close valve (Volume 2, WP
0263).
T0483DAA
Figure 8.
Thermal Close Valve.
c.
With thermal close valve cold , blow compressed air into tubing at ether valve end to determine if system
is clear.
d.
If restricted, disconnect tubing from thermal close valve and check for restrictions in tubing.
CONDITION/INDICATION
IS THERMAL CLOSE VALVE OR THERMAL CLOSE VALVE TUBING RESTRICTED?
DECISION
YES - Tubing restricted, replace tubing (Volume 2, WP
0263). Go to Step (10) to verify problem is solved.
YES - Tubing clear, replace thermal close valve (Volume 2, WP
0264). Go to Step (10) to verify problem is
solved.
NO - Go to Step (9).
TM 9-2320-272-23-1
0021
0021-14
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