TM-5-2350-377-14-P
ARMORED COMBAT EARTHMOVER (ACE), M9
TECHNICAL MANUAL; OPERATOR'S, UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST) SUPPORTING THE HYDRAULIC BLADE FOLDER-TRACK TENSIONER (HBF-TT)
TM-5-2350-377-14-P - Page 35 of 335
TM 5-2350-377-14&P
OPERATING PROCEDURES - continued
TRACK TENSION ADJUSTMENT
NOTE
Ensure that bowl is empty before adjusting track tension. Optimum track adjustment is when
the track is in the tightest possible condition which still allows the vehicle to be lowered to the
digging position.
It is normal to have short delays during lowering and raising while the HBF-TT track adjusting
components function.
1. Start engine (TM 5-2350-262-10).
2. Place SPRUNG/UNSPRUNG control lever (1) in SPRUNG position and allow suspension system to stabilize.
3. Adjust the hard throttle so engine idles at 750-850 rpm to maintain hydraulic pressure. Allow engine to idle for five
minutes so that the vehicle will settle into a constant position.
NOTE
Every time the tracks are loosened by track loosening switch, adjust tension in both tracks one
at a time using the steps listed below.
4. Move track loosening switch (10) momentarily (two to three seconds) to loosen both tracks. Vehicle will move slightly
as track adjust cylinders retract.
0005 00-6
0005 00
1
10
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