3-14 Operation
022-00029AE Operation and Maintenance Manual
9.
If machine is parked on a slope, install
wheel chocks in front of and behind vehicle
wheels.
ADDITIONAL BRAKING
Machine hydraulic system can supply additional braking force during travel. To accomplish this, move pilot
control valve lever (joystick) to crowd position and hold it there. Hydraulic pump will be driven to supply
output at maximum pressure (relief pressure). Energy expended to drive pump, will slow engine speed.
Additional braking, along with proper gear selection, can be used to slow a vehicle that is being driven
down an incline.
BOOM RAISE KICKOUT
Placing pilot control valve lever (joystick) in
"Boom Raise Detent" position will lock lever
(joystick) in raise boom position. Boom will raise
until trip plate (1, Figure 30) makes contact with
bucket height limit switch (2). When limit switch
is tripped, boom will stop raising and lever
(joystick) will automatically be returned to
"NEUTRAL" position. Trip plate can be adjusted
to control maximum height that boom can be
raised.
WARNING!
Always secure machine with wheel
chocks when parked on a slope.
Leaving machine in gear will provide
no braking effect because
transmission clutch is hydraulically
operated. When engine is turned
"OFF," there is no hydraulic pressure
in transmission and clutch is not
engaged.
Figure 29
HBOI441L
2
1
3
Figure 30