TM 9-2350-247-20-1
PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDING
LUBRICATION INSTRUCTIONS — Continued
0128 00
ITEM
NO.
INTERVAL
MAN-
HOUR
ITEM TO BE
CHECKED OR
SERVICED
CREWMEMBER
PROCEDURE
EQUIPMENT
NOT READY/
AVAILABLE
IF:
b. If outside air temperature is less than 85 degrees
F (29 degrees C), normal operating temperature
should be 160 to 200 degrees F (71 to 93
degrees C). If outside air temperature is greater
than 85 degrees F (29 degrees C), normal
operating temperature should be 160 to 230
degrees F (71 to 110 degrees C).
c. With range selector in N (M548A1) or SL
(M548A3), engine should idle smoothly at 650
to 700 rpm.
d. High and low engine idle speed is usually
caused by accelerator linkage being out of
adjustment. Adjust linkage if necessary
(WP 0197 00 or WP 0200 00).
e. Rough idling is usually caused by faulty injector
timing and rack setting, faulty injectors, or air in
the injection system. Notify your supervisor.
83
Semi-
Annual
Governed
No-Load Test
a. Run engine at 800 to 1000 rpm for 3–5 minutes
with range selector in 2–3 range and brakes
locked until normal engine operating
temperature is reached.
b. If outside air temperature is less than 85 degrees
F (29 degrees C), normal operating temperature
should be 160 to 200 degrees F (71 to 93
degrees C). If outside air temperature is greater
than 85 degrees F (29 degrees C), normal
operating temperature should be 160 to 230
degrees F (71 to 110 degrees C).
c. With range selector in N (M548A1) or SL
(M548A3), slowly open throttle control until
accelerator is fully depressed.
0128 00-89
