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 TM 9-2815-220-24
ENGINE ABNORMAL EXHAUST
0016 00
MALFUNCTION 1: (Continued)
Excessive black smoke (one or both banks).
PROCEDURE
OBSERVATION
ANALYSIS
Engine speed 1800-1950 rpm.
Engine power is
normal.
(Continued)
Repeat the preceding
Engine speed below 1800 rpm.
Power is below normal.
step, but operate
Engine speed above 1950 rpm.
Transmission is
engine for 30 seconds
slipping or fuel
(maximum).
injection pump is out of
adjustment.
Normal engine speed (1800-1950 rpm).
Air cleaner elements
satisfactory.
Speed below normal.
Proceed to next step.
If engine speed increases from speed
The elements are dirty.
Open doors, remove
obtained previously to normal speed.
elements, clean
element chamber and
close doors. Repeat
stall test.
PROBABLE CAUSE
CORRECTIVE ACTION
(2) Service filter (clean, dry or replace). Refer
b. (Continued) Air cleaner restriction
to pertinent vehicle technical manual.
(element dirty, wet or blower motor
inoperative).
c. Air cleaner hose collapsed.
(1) Inspect, repair or replace (refer to pertinent
vehicle technical manual).
(1) Inspect and clean (refer to pertinent vehicle
d. Turbocharger air inlet blocked with plastic
technical manual).
plug, tape, rag, or other debris (usually one
bank only).
e. Turbocharger compressor housing clamp.
(1) Tighten or replace clamp.
(1) Remove inlet elbows (refer to pertinent
f. Turbocharger defective (sticky, worn or
vehicle technical manual) and check for
failed bearings, seals and damaged
bearing play or looseness, impeller damage,
impeller).
or excessive carbon deposits on turbine
wheel. Replace defective turbocharger
Replacement (2CA & 2DA) or WP 0100 for
2DR).
(1) Inspect exhaust manifold for leaks and
g. Exhaust manifold leak (loose flange, failed
repair as required (WP 0107, Exhaust
gasket, cracked or damaged manifold or
Manifolds and Associated Parts
elbow).
Replacement).
WP 0016 00-2
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