1-11. BOLSTER LOGGING TRUCK W/W: M815
a. Purpose of the Vehicle. The M815 bolster truck and trailer combination is designed
to transport utility poles, bridge sections, and logs. The trailer is carried on the truck
when not in use.
b. Physical Description. The M815 bolster truck is equipped with a cab protector,
front winch, midships winch, bolster assembly, and bolster trailer carrier. The carrier is
connected to the truck frame to support the M796 bolster trailer in the loaded position.
Ramps are used for loading and unloading the bolster trailer, Mounting brackets for the
ramps are located at the rear section of the trailer carrier.
The bolster trailer M796 has two bolster assemblies mounted over the midsection of the
trailer frame, an adjustable reach, a bolster assembly mounted on the reach, safety
chains, failsafe air-over-hydraulic wheel brakes, separate parking brake for both front
wheels, an intervehicular electrical cable, two airbrake hoses, and a retractable landing
gear mounted on the reach. Refer to TM 9-2330-287-14 for additional trailer operation