TM 5-3805-294-23-1
0117
Table 1. Engine Emits Excessive Black or Gray Exhaust Smoke - Continued.
Test or Inspection
Corrective Action
Malfunction
4.
Shut down engine and turn key
1.
If excessive black exhaust
switch to OFF position (TM
smoke is present, proceed to
5-3805-294-10). (Volume 5,
Malfunction 5.
WP 0794)
2.
If excessive black exhaust
smoke is not present, problem
corrected.
1.
Remove air filters and hoses.
5.
Air Intake
Restricted With
(Volume 3, WP 0456)
Debris or Foreign
Objects.
2.
Visually inspect air filters,
1.
If restricted, remove debris or
housing, and hoses for debris
foreign objects. Restore
and foreign objects.
machine to original condition.
2.
If not restricted, proceed to
Malfunction 6.
1.
Install air filters and hoses.
6.
Exhaust Pipes and
Muffler Damaged or
(Volume 3, WP 0456)
Restricted.
2.
Visually inspect exhaust pipes
1.
If restricted, remove debris or
and muffler for damage and
foreign objects.
restrictions. (Volume 3,
If damaged, replace exhaust
2.
WP 0482)
pipes and/or muffler. (Volume
3, WP 0482) Restore machine
to original condition.
3.
If not restricted and not
damaged, proceed to
Malfunction 7.
Perform Cylinder Cutout Test.
1.
If black smoke decreased
7.
Cylinder Cutout
when each cylinder was
Test.
(Volume 3, WP 0329) Note
cutout, replace affected
which cylinder(s) have a
cylinder(s) fuel injector(s).
decrease in black smoke when
each cylinder is cutout.
(Volume 3, WP 0408) Restore
machine to original condition.
2.
If black smoke did not
decrease when each cylinder
was cutout, proceed to
Malfunction 8.
0117-3