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 24 of 335
TM 5-2350-377-14&P
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THEORY OF OPERATION
SCOPE
This section contains information relative to the principles of operation for the M9, Armored Combat Earthmover with
Hydraulic Blade Folder and Track Tensioner.
The general functional description of the vehicle and the HBF-TT system
is contained in this section.
Maintenance personnel should be familiar with the principles of operation of these systems
before working on or troubleshooting this system.
A more thorough understanding of the hydraulic system and electrical
system can be obtained by referring to
TM 5-2350-262-20-1, Vehicle Wiring Diagram and TM 5-2350-262-20-3, Vehicle
Hydraulic Schematic.
SUSPENSION SYSTEM
The suspension system consists of tracks, roadwheels, arms, drive sprockets, rotary actuators, and bump stops.
The
suspension system components used in the HBF-TT system are described below.
TRACK ADJUSTING CYLINDERS
The track adjusting cylinders control the track tension.
The track adjusting cylinders can be controlled by a control lever
in the driver's compartment.
TRACK ADJUSTING
CYLINDER
ADJUSTING FLANGE
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