CRANE OPERATOR AND RIGGER CONTROLSCONTINUED
Control or Indicator
Controls gas-particulate air purifier to supply operator and
rigger clean air through mask M25 or M25A1.
Boom winch shift control
A three-position control equipped with a pull-up lock. The
outer notch provides high gear ratio, center notch provides a
neutral position (gears not engaged), and inner notch provides
low gear ratio for load handling.
Tow winch shift control
A three-position control equipped with a lock trigger. Turned
fully counterclockwise provides high gear ratio, turned
halfway provides a neutral position (gears not engaged), and
turned fully clockwise provides low gear ratio for load
Load rating capacities
Indicates safe operating capacities of boom in relation to load
weight, boom position, boom elevation, and with suspension
locked, indicates tow winch capacities with and without
A single pole 24-volt outlet that allows auxiliary electrical
equipment operation from vehicle electrical system.
Controls two floodlights from inside cab. Used to illuminate
night recovery operations.
12 Flasher indicator lamp
Flashes on and off when flasher light is operating.
Controls flasher light to warn personnel during vehicle
Level wind switch
Controls electrical power to level wind assembly to
automatically align cab with tow winch wire rope.
Filter bypass indicator
Lights when hydraulic reservoir filter is plugged with foreign
. Boom cylinder control
Operates a three-position hydraulic valve to control boom
cylinders to raise or lower boom. It is spring-loaded to return
to center position.