TM-9-2320-285-10
TRUCK TRACTOR, YARD TYPE, 43,500 LB GVW, DED, 4X2, ARMY MODEL M878A1
TECHNICAL MANUAL; OPERATOR’S MANUAL
JUNE 1985
TM-9-2320-285-10 - Page 8 of 121
TM 9-2320-285-10
Section II.
EQUIPMENT DESCRIPTION
Para
Para
Equipment Purpose, Capabilities, .
...................
Location and Description of
Features and Characteristics.
....................
1-7
Major Components.
.................................................
1-8
Purpose of M878A1 Tractor.
......................
1-7a
Equipment Data .
.....................................................
1-9
Capabilities and Features .
.........................
1-7b
1-7.
EQUIPMENT PURPOSE, CAPABILITIES, FEATURES AND CHARACTERISTICS
a.
Purpose of M87AM1 Tractor.
Perform terminal yard operations such as spotting and moving trailers.
b.
Capabilities and Features.
(1)
Hydraulically operated fifth wheel enables lowering or raising of fifth wheel for alignment with trailers.
(2)
Pneumatically operated fifth wheel unlatch.
(3)
Hand operated cab tilt pump enables tilting of cab to 45 degrees.
Cab may then be manually tilted to 90
degrees.
(4)
Six cylinder diesel engine and five speed automatic transmission.
(5)
Power steering.
(6)
Fail-safe brakes: loss of air pressure automatically allows large spring in rear axle brakes air chambers to
apply parking brake.
1-8.
LOCATION AND DESCRIPTION OF MAJOR COMPONENTS
Engine - 6-cylinder turbocharged diesel.
Transmission - Automatic, with five forward speeds, neutral, and reverse.
Exhaust System - Consists of muffler and exhaust pipe.
Brakes - Drum type, pneumatic operated.
1-3
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