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Page Title:
EXCESSIVE BLACK OR GRAY EXHAUST SMOKE |
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 TM 9-2320-366-20-1
TM
INITIAL SETUP
Equipment Conditions
Tools and Special Tools
Engine shut down (TM 9-2320-366-10-1).
Tool Kit, Genl Mech (Item 46, Appendix C)
START
KNOWN INFO
TEST OPTIONS
1.
Air cleaner element
AIR FILTER RESTRICTION
serviced by emergency
GAUGE Check
Does AIR FILTER
REASON FOR QUESTION
cleaning.
RESTRICTION
Air inlet system OK.
Exhaust smoke may
GAUGE read below
be black or gray if
yellow area?
POSSIBLE PROBLEMS
air flow to engine is
Faulty air cleaner.
restricted.
Clogged air filter.
Damaged manifold hose
and/or flex hose.
Damaged particle
NO
extraction hose.
Service air cleaner or
replace restricted air
YES
hoses (para 4-2).
KNOWN INFO
TEST OPTIONS
2.
Air cleaner element
Air filter check
serviced by emergency
REASON FOR QUESTION
Is air filter
Exhaust smoke may be
cleaning.
clean?
black or gray if air filter
Air inlet system OK.
is clogged.
AIR FILTER RESTRICTION
GAUGE OK.
POSSIBLE PROBLEMS
Clogged air filter.
NO
Damaged manifold
hose or flex hose.
Damaged particle
extraction flex hoses.
YES
Replace air filter
(para 4-2). Go to
step 4 of this fault.
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