TM 9-2360-261-20-l
Table 2-1. Unit Level Preventive Maintenance Checks and Services for M113A2 FOV
Item
Interval
Item To
Procedure
Not Mission
No.
Be
Capable If:
Inspected
3
Semi-
Idle Test
CAUTION
Annual
Avoid lengthy engine idling .
This causes coolant temperature
to drop below operating tem-
peratures and can shorten en-
gine life.
Run engine at 800 rpm for 3-5 minutes
with range selector in 2-3 range and
brakes locked until normal operating
temperature is reached.
Engine runs hot or
rough.
If outside air temperature is less than
85°F (29°C), normal operating tem-
perature should be 160° to 200° F (71°
to 93°C). If outside air temperature is
greater than 85° (29°C, normal oper-
ating temperature should be 160° to
23O°F (71” to 110°C).
With range selector in N, engine
should idle smoothly at 650 to 700
rpm.
High or low engine idle speed is usu-
ally caused by accelerator linkage be-
ing out of adjustment. Adjust linkage
if necessary (page 23-34).
Rough idling is usually caused by
faulty injector timing and rack setting,
faulty injectors, or air in the injection
system.
Contact next higher level
maintenance.
Change 3 2-43
