TM 5-3805-264-14&P
Section III.
PRINCIPLES OF OPERATION
Paragraph
Number
Paragraph Title
Page
Number
1-15.
1-16.
Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-17.
Dump Body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-13
Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-13
1-16
1-15.
ELECTRICAL SYSTEM.
a.
The dump body electrical system consists of wiring harnesses that connect to the vehicle’s chas-
sis wiring harnesses.
b.
The dump body harnesses connect to:
(1)
Lights. Taillights and marker clearance lights (one on each side of dump body and three in
light cluster at rear hinge) are located on dump body. Beacon warning light is located on cab shield.
(2)
Instrument Panel Indicator/Warning Lights and Related Switches. Body Up and Body
(Transport) Lock indicator lights are located on instrument panel in cab. Body Up and Transport Lock switches are
located on cylinder support frame.
(3)
MCS Tailgate (M917A1 w/MCS). Solenoid-controlled air cylinders open and close MCS
gates.
1-16.
DUMP BODY.
a.
Dump Body Assembly.
(1)
The dump body is a welded assembly of heavy gage steel with bolt-on assemblies and
components. It is 13.5 ft (411 cm) long with 14 cu yd (10.7 m3), 18.5 ton (16.8 metric ton) capacity.
(2)
The dump body is attached to the truck frame at the rear hinge. Other attachment points
are at the stabilizer and the hydraulic cylinder.
shield.
(3)
An abrasion resistant steel bed resists wear and denting.
(4)
A bolt-on cab shield protects the cab. The beacon warning light is mounted on the cab
(5)
Wooden side boards along the top on both sides of the dump body add height to help pre-
vent spillage when hauling material.
(6)
The dump body has an interlocking under structure.
b.
Stabilizer.
(1)
A hinged stabilizer, mounted between the truck frame and the dump body, adds stability as
the dump body is raised.
(2)
Five grease fittings on the stabilizer allow for lubrication.
c.
Body Props.
(1)
Use of body props permit inspection or maintenance to be safely performed underneath an
empty raised dump body.
(2)
Body props are located on outside of truck frame. When not in use, they are stowed in the
horizontal position.
1-13
