TM-9-2320-361-24-1
2-1/2 TON, 6X6, M44A2 SERIES TRUCKS
TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE PART 1 OF 2
AUGUST 2006
TM-9-2320-361-24-1 - Page 103 of 1176
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
12. EXCESSIVE FUEL
CONSUMPTION;
EXHAUST COLOR BLUE
AND/OR EXCESSIVE
SMOKE
1. Check for air cleaner restrictions
and air cleaner indicator.
2. Inspect fuel lines, hoses, and
connections for leaks and
damage.
3. Inspect engine oil for presence
of fuel.
1. If red appears at indicator
window, inspect air intake for
restrictions. If restrictions are
not present, replace air cleaner
element (WP 0052 00).
2. Reset air cleaner indicator
(TM 9-2320-361-10).
1. Tighten any loose connections.
2. Repair or replace damaged
components.
If fuel is present in oil, remove fuel
pump, drain system, and replace
fuel pump (WP 0061 00).
TM 9-2320-361-24-1
0006 00
0006 00-7
MECHANICAL SYSTEMS TROUBLESHOOTING - UNIT (Contd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. EXHAUST COLOR BLUE
DURING NORMAL
OPERATION
NOTE
Blue exhaust indicates excess
engine oil in cylinder combustion
space.
1. Check that engine oil grade is
correct for vehicle use and
climatic conditions (WP 0020 00).
2. Check that engine fuel grade is
correct for vehicle use and
climatic conditions
(TM 9-2320-361-10).
3. Inspect turbocharger for oil leaks
into engine air intake or exhaust
system.
4. Perform compression test
(WP 0008 00, table 1,
malfunction 11).
If oil grade is incorrect, replace oil
(WP 0020 00) and oil filters
(WP 0044 00).
If fuel grade is incorrect, drain
complete fuel system and replace
with correct grade of fuel
(TM 9-2320-361-10).
If oil leaks are found, replace
turbocharger (WP 0057 00).
Replace defective components
identified by compression test.
Table 2. Exhaust System Troubleshooting Procedures.
Table 1. Engine Troubleshooting Procedures (Contd).
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