TM 5-3895-385-23-1
FIELD MAINTENANCE
BITUMINOUS MATERIAL PAVING MACHINE (BMPM)
ABNORMAL ENGINE EXHAUST NOISE
INITIAL SETUP:
Personnel Required
References ― Continued
91L
WP 0348, Vol 2
Assistant
WP 0357, Vol 2
References
WP 0361, Vol 2
WP 0277, Vol 2
WP 0448, Vol 3
WP 0323, Vol 2
Equipment Conditions
WP 0347, Vol 2
Engine off (TM 5-3895-385-10)
Engine hood assembly removed (WP 0433, Vol 2)
TROUBLESHOOTING PROCEDURE
WARNING
A turbocharger becomes very hot and requires more time to cool down than other parts of engine
assembly. Shut down Bituminous Materials Paving Machine (BMPM) engine and allow it to cool
sufficiently before performing checks, services, or maintenance. Wear gloves and additional
protective clothing as required. Failure to comply may cause injury or death to personnel.
Table 1. Abnormal Engine Exhaust Noise.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. High-pitched hiss or whistle
1. Inspect exhaust outlet for
1. Clear exhaust outlet of any
from exhaust outlet with
obstructions.
obstructions.
decreased engine output.
2. If exhaust outlet is not
obstructed, proceed to next
test.
2. Inspect exhaust piping for
1. If damaged, replace exhaust
damage.
piping (WP 0347, Vol 2).
2. If exhaust piping is not
damaged, proceed to next test.
3. Inspect muffler for damage.
1. If damaged, replace muffler
(WP 0361, Vol 2).