TM 5-5420-234-14&P
Section I. DESCRIPTION AND USE OF OPERATOR'S
CONTROLS AND INDICATORS
This section addresses the location and use of controls and indicators used to operate the M1977 Common Bridge
Transporter (CBT) and the Bridge Adapter Pallet (BAP). You should know the location and proper use of every control
and indicator before operating the vehicle.
1
4
3
2
PTO ENGAGE
OFF
ON
MODEL A SHOWN
HIGH IDLE
OFF
ON
Figure 2-1. Load Handling System (LHS) Cab Controls and Indicators
Key
Control or Indicator
Function
1
WORK LIGHT Switch
Turns on and off the worklight located between the arms of the
main frame on the LHS, and the spotlight located on the hydraulic
cabinet assembly.
2
PTO [Power Takeoff] ENGAGE
When placed in the ON position, hydraulic pressure is supplied to
Switch
operate the LHS and BAP.
3
PTO ENGAGE Indicator
Indicates when the PTO switch is in the ON position.
4
HIGH IDLE Switch
When placed in the ON position, increases the truck's idle speed
from low to high (1200 rpm) for LHS operation.
Change 1
