OPERATION
OPERATION
3-116
DIGGING
NOTICE
q
Do not shift down with the accelerator pedal depressed (with the engine speed raised). If the transmis-
sion is shifted down when the engine speed is high, there will be an excessive load on the engine,
torque converter, transmission, axles, final drive, and the whole power train.
q
When thrusting the bucket in, shift down to 1st. If the bucket is thrust in at high speed, there will be an
impact load on the machine and this will reduce the service life of the machine.
q
When shifting down, release the accelerator pedal to reduce the engine speed before shifting down.
Then gradually depress the accelerator pedal. If the accelerator is operated suddenly after shifting
down, there will be excessive load brought to bear on the engine and power train.
q
Do not carry out operations with the machine articulated. If the machine is articulated, the direction of
force will be different on the front wheels and rear wheels. As a result, the power when traveling will
not be transmitted fully to the front wheels, so this will reduce the digging force and bring an exces-
sive load to bear on the center hinge pin. In addition, even with the front wheels, the power will not be
transmitted uniformly to the left and right wheels. The load will be brought to bear on one wheel, so
this will reduce the service life of the tire on one side.
q
Do not push the machine in too far. If it is pushed in too far, a high load will be brought to bear on the
machine and this will reduce the service life of the work equipment and frame.
q
Operate the control lever slowly near the end of the bucket tilt operation. If the control lever is oper-
ated suddenly, an impact load will be brought to bear on the tilt cylinder, and there is danger that the
cylinder may be damaged.
q
When close to pit excavation, do not let the front wheels rise up on the cutting face. This will cause
cuts to the tires.
1.
Immediately in front of the rock, let the accelerator pedal back and shift down from 2nd to 1st.
2.
After shifting down, depress the accelerator pedal gradually and push the rock.
3.
Raise the lift arm slightly and increase the driving force of the front wheels. When doing this, do not push in too
far.
REMARK
When digging up large rocks, in some cases it may be better not to raise the lift arm too high. If the lift arm is raised
too high, the rear wheels may come off the ground.
4.
After loading the rock completely into the bucket, operate
the bucket tilt and lift 2 - 3 times repeatedly to fill the
bucket.
5.
Let back the accelerator pedal, operate the control levers
slowly, and tilt the bucket back fully.
6.
To prevent the load from falling out of the bucket, after
completing the scooping-up operation, operate in the dump
and tilt direction when the bucket is near the full tilt to stabi-
lize the load.
REMARK
If the brakes are operated lightly before traveling in reverse, it
is possible to stabilize the load in the bucket.
To prevent generation of heat in the torque converter, keep the
standard time for digging to within 10 seconds from the start of
pushing in to the completion of scooping up.
Summary of Contents for WA800-3E0
Page 2: ......
Page 3: ...FOREWORD 11...
Page 27: ...SAFETY SAFETY LABELS 2 5 LOCATION OF SAFETY LABELS 2...
Page 66: ...GENERAL VIEW OPERATION 3 4...
Page 84: ...EXPLANATION OF COMPONENTS OPERATION 3 22 SWITCHES 3...
Page 224: ...TROUBLESHOOTING OPERATION 3 162...
Page 309: ...SPECIFICATIONS 15...
Page 330: ...HANDLING MACHINES EQUIPPED WITH VHMS ATTACHMENTS OPTIONS 6 20...
Page 331: ...INDEX 17...
Page 332: ...INDEX 7 2...
Page 335: ...COLOPHON 18...