TM 9-2320-365-20-1
2-92
a10. EXCESSIVE BLACK OR GRAY EXHAUST SMOKE
START
1.
Exhaust smoke may
be black or gray if
air flow to engine is
restricted.
AIR FILTER RESTRICTION
GAUGE Check
TEST OPTIONS
REASON FOR QUESTION
KNOWN INFO
Does AIR FILTER
RESTRICTION
GAUGE read below
yellow area?
Air cleaner element
serviced by emergency
cleaning.
Air inlet system OK.
Faulty air cleaner.
Clogged air filter.
Damaged manifold hose
and/or flex hose.
Damaged particle
extraction hose.
POSSIBLE PROBLEMS
YES
NO
Service air cleaner or
replace restricted air
hoses (para 4-2).
2.
Is air filter
clean?
NO
YES
Air filter check
Exhaust smoke may be
black or gray if air filter
is clogged.
Air cleaner element
serviced by emergency
cleaning.
Air inlet system OK.
AIR FILTER RESTRICTION
GAUGE OK.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Clogged air filter.
Damaged manifold
hose or flex hose.
Damaged particle
extraction flex hoses.
Replace air filter
(para 4-2). Go to
step 4 of this fault.
INITIAL SETUP
Equipment Conditions
Engine shut down (TM 9-2320-365-10).
Tools and Special Tools
Tool Kit, Genl Mech (Item 44, Appendix C)
