controls opening of dipper door when operating with
shovel front end attachment. Pull this lever toward
operator to open dipper door. Release lever the instant
shifter lever (af. above) will swing or propel the
dipper door opens.
machine. With swing shifter lever pulled back in swing
aa. Engine Throttle Control Lever. Located on left
position, pull swing clutch lever toward operator to swing
right, push toward front to swing left. With propel shifter
compartment panel at rear of operator's seat (fig. 2-24)
lever moved forward in propel position, push, propel
is used to set engine speed. Move forward to increase
clutch lever forward to travel forward, or pull toward
speed, back to idle.
operator for reverse.
ab. Manual Engine Shut Off Control. Located below
Caution: When traveling over 100 feet, or
throttle control lever (fig. 2-24) this control shuts off fuel
flow to injector pump. Pull to stop engine (para 2-11),
longer distances, the crawler idler sprockets must
then after engine stops, push in.
be at front of crane-shovel, and must point in
ac. Steering Gear Engaging Lever. Located behind
direction of forward travel.
steering wheel (fig. 2-24), this lever should always be up
al. Crowd (Digging) and Retract Clutch Lever. This
as illustrated, except when steering wheel is to be used.
lever (fig. 2-23) is a push-pull type lever which rotates
Moving lever downward engages steering wheel with
left hand (digging) crowd drum. Pull toward operator to
steering gear.
wrap cable on the drum. Push away from operator to
run cable off drum (when planetary pinions are
"trigger lever" type control for locking machine so it will
installed).
With shovel front end attachment and
not swing during transportation, or prolonged storage.
sprocket installed, pull lever toward operator to crowd
Lever is illustrated in the unlocked position. To lock,
shovel into bank, push lever away from operator to
remove wedge; grasp trigger lever and squeeze
retract dipper from bank after it is loaded.
together while moving lever forward. (It may require
am.
Hoist Clutch and Propel Brake Lever. This
swinging machinery deck a little left or right before the
lever (fig. 2-23) when pulled toward operator engages
lock will engage ring gear). Let wege hang on its chain.
clutch on hoist drum and wraps cable on drum. When
Note. Anti-rotation bars (para 2-5g) must also
this lever is pushed away from operator, it applies the
be installed for transportation and storage.
propel brake. To lock propel brake in applied position,
ae. Swing Brake Lever. Located between steering
push down on propel brake hydraulic control handle (e
wheel and pressure primer discharger (fig. 2-24), push
above) and turn clockwise.
this lever forward to apply hydraulic pressure to swing
brake. To lock the swing brake, push lever forward and
located at extreme right of lever stand, when pulled
set brake, then push swing brake hydraulic control
toward operator, will wrap cable on boom hoist drum
handle in and turn one quarter turn clockwise.
and raise boom (or auxiliary gantry, when used with
af. Swing and Propel Shifter Lever. This lever,
backhoe). Push this lever away from operator to
located at left of steering wheel (fig. 2-24) and along
release boom hoist brake and allow boom to lower by
side instrument control stand, shifts motive power to
gravity. Return lever to neutral position to set boom
propel or swing. Move shifter lever fully forward to
hoist brake and hold boom in new position.
travel machine, fully to the rear to swing it.
ao. Boom Hoist Hydraulic Control Handle. This
ag. Hoist Brake Lock. Turning this lever to the left
handle (fig. 2-23) must be squeezed toward boom hoist
clutch lever to close the pressure retaining valve
brake in applied position. Move right to release.
connected to boom hoist hydraulic line and lock hoist.
ah. Digging Brake Lock. Moving this lever to right
Clutch lever can then be pumped (moved to and from
operator more than once), to engage boom hoist clutch
brake in the applied position.
more firmly on the drum.
ap. Boom Angle (radius) Indicator. This indicator
located on floor in front of lever stand, near instrument
control stand, applies brake to left hand or digging drum.
of crane boom, and is used in conjunction with capacity
aj. Hoist Brake Pedal. Located on floor in front of
plate mounted on right cab panel directly behind cab
door, to determine crane safety capacity at any given
lever stand to right of digging brake pedal (fig. 2-23),
boom length, or angle.
this pedal applies brake to right hand or hoist drum.
2-27
