TM-9-2320-273-10
TRUCK, TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER
TECHNICAL MANUAL; OPERATOR’S MANUAL
DECEMBER 2012
TM-9-2320-273-10 - Page 93 of 452
ENGINE AND TRANSMISSION FUNCTION - CONTINUED
The M915 through M920 vehicles use Caterpillar Model D-7155 Overdrive 16-Speed
semi-automatic transmissions with remote air control power shift. Gear selection is
accomplished through a manual control lever mounted on a control tower in the cab.
The manual control lever is connected to the transmission by air hose using operating
air from vehicle air supply. The transmission will not operate unless the transmission
air control valve is pushed in to provide transmission with operating air from vehicle
air supply.
Figure 4. M915 through M920 Transmission Controls.
MANUAL
CONTROL
LEVER
TRANSMISSION
AIR CONTROL
VALVE
TM 9-2320-273-10
0004
0004-5
Back to Top
