TM-9-2320-285-24-1
TRUCK TRACTOR, YARD TYPE, 43,500 LB GVW, DED, 4X2, ARMY MODEL M878A1
TECHNICAL MANUAL; ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
OCTOBER 1985
TM-9-2320-285-24-1 - Page 23 of 987
TM 9-2320-285-24-1
1-29.
ACCESSORIES
1.
WINDSHIELD WIPER.
Single wiper arm and
blade, controlled by WIPER control located at front
instrument panel; mounted at center of windshield,
driven by pneumatic-operated motor assembly.
2.
WINDSHIELD WASHER.
Applies two streams
of washer solvent to windshield; operation of WASHER
button, located at front instrument panel, causes washer
pump and reservoir, mounted on engine compartment
rear grille, to deliver solvent to two washer nozzles
located below windshield.
3.
CAB HEATER.
Uses hot engine coolant and electric motor-driven blower to heat cab.
Operation of defroster
control allows cab heater air to be directed through defroster vents to windshield.
In warm weather, with temperature
control pushed in fully (no heat), operation of fresh air control allows outside air, entering through cab vents, to circulate
through cab.
1-30.
FIFTH WHEEL HYDRAULIC SYSTEM
1.
HYDRAULIC PUMP.
Located at right hand side of transmission, supplies hydraulic oil to fifth wheel control valve.
2.
POWER TAKE-OFF.
Located at right hand side of transmission, drives hydraulic pump; controlled by PTO
control, located at right corner instrument panel.
3.
FIFTH WHEEL CONTROL VALVE.
Regulates flow of hydraulic fluid to fifth wheel hydraulic cylinders.
4.
FIFTH WHEEL HYDRAULIC CYLINDERS.
Mounted to rear chassis and fifth wheel boom, raise and lower fifth
wheel boom.
5.
HYDRAULIC RESERVOIR.
Mounted on chassis, behind fuel tank at left hand side of vehicle, supplies hydraulic
fluid to fifth wheel hydraulic system.
1-14
Back to Top
