TM 5-5420-226-20-1
P r e v e n t i v e M a i n t e n a n ce
Item
No.
11
Interval
Semiannual
TACHOMETER
(RPM)
C h e c k s a n d S e r v i c e s f o r M 4 8 A 5 A V L B H u l l -
Location
Item to
Check/Service
Engine (Governed
Speed and
Performance)
C o n t i n u ed
Procedure
DURING ROAD TEST
Test engine for normal acceleration
and full power in each transmission
range while vehicle is moving.
While testing in low speed range, ac-
celerate to wide open throttle.
Check that engine speed under load
does not exceed more than 2450
rpm. If engine speed exceeds 2450
rpm, notify support maintenance.
Not Fully Mission
Capable if:
High engine speed
or low power.
Engine speed ex-
ceeds 2450 rpm.
TRANSMISSION
SHIFTING
CONTROL
Change 6
3-19
