TM-9-2815-220-24
AVDS-1790 2CA, 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL FOR AVDS-1790 2CA, 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines
TM-9-2815-220-24 - Page 171 of 1563
TM 9-2815-220-24
SMOKE GENERATING SYSTEM ABNORMAL OPERATION
0025 00
THIS WORK PACKAGE COVERS:
Troubleshooting Table and Diagnostic Tests
WARNING
When using JP-8 fuel the smoke generator must be disabled.
Smoke will not
be generated when using JP-8 and excess fuel could puddle causing a
potential fire hazard.
See Field Service Bulletin 458 for disabling procedure.
INITIAL SETUP:
Tools:
General mechanic’s tool kit (item 121, WP 0176)
Personnel Required
Track Vehicle Repairer (2) 63H10
Equipment Conditions:
Engine installed in vehicle or ground hop.
MALFUNCTION 1:
Engine fails to produce smoke when engine is operating and smoke
generating system is activated.
PROBABLE CAUSE
CORRECTIVE ACTION
a. Fuel shut-off valve closed.
(1) Open fuel shut-off valve.
(1) Bring engine speed to 1000 rpm
momentarily to insure generator output.
b. No generator output.
(2) Troubleshoot generator malfunction
(WP 0021 for 650 ampere, or WP 0022 for
300 ampere).
c. Restricted fuel tube adapters in exhaust
pipes.
(1) Replace fuel tube assemblies.
d. Air cleaner blower motors not operating.
(1) Refer to pertinent vehicle technical manual.
e. Ruptured fuel hose or tube.
(1) Replace fuel hose or tube.
f.
Fuel solenoid valve(s) not operating.
(1) Replace solenoid valve(s).
g. Restricted fuel hose or tube.
(1) Replace fuel hose or tube.
MALFUNCTION 2:
Smoke produced is of poor quality.
PROBABLE CAUSE
CORRECTIVE ACTION
a. Loss of fuel from loose connection or
ruptured hose or tube.
(1) Tighten connection or replace hose or tube.
b. Restricted fuel hose or tube.
(1) Replace hose or tube.
c. Restricted fuel filters.
(1) Service fuel filters.
d. Restricted fuel tube adapters in exhaust
pipes.
(1) Replace fuel tube assemblies.
e. No current to solenoid valves.
(1) Repair wiring harness.
f.
Solenoid valve(s) defective.
(1) Replace solenoid valve(s).
END OF WORK PACKAGE
WP 0025 00-1 (2 blank)
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