Working the Machine
5-5
Hauling
While travelling the haul road, always maintain a safe speed for the
haul road conditions and grades. Never allow the machine to move or
coast with the transmission in 'NEUTRAL'!
When approaching or encountering extremely soft or slippery condi-
tions, stop the machine and engage the differential locks. Do not
engage the differential locks when the machine is moving or wheels
are spinning. Disengage the locks as soon as conditions return to
normal.
When approaching downgrades, select the proper transmission gear
range and use the retarder and service brakes as required to main-
tain safe descent speed, without over-speeding the engine, or gaining
excess travel speed. Generally, the transmission range required for
ascending is also correct for descending a grade.
Always remain a safe distance behind the machine ahead, particu-
larly on downgrades. A good rule-of-thumb to follow is to allow two
truck-lengths between machines for each 16 km/h (10 mile/h) of travel
speed under normal operating conditions. Under adverse conditions,
allow more room for safe operation. On jobs on which minimum dis-
tance between machines is specified for the haul road, be sure to
observe the regulations at all times. Such regulations are established
for the safety of everyone on the job.
Pay attention to haul road conditions to avoid rocks, holes, or other
obstacles. Such obstacles not only present hazards to safe operation,
but can needlessly damage tyres and suspensions if not avoided.
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