OPERATION UNDER USUAL CONDITIONS - CONTINUED
Maneuver around large obstructions when traveling. Driving over large objects may damage transmission
The following instructions are intended to provide basic procedures on traveling with scraper, loaded or
Travel only on haul roads that have been authorized for your use and have been properly maintained (WP 0007 00 con-
tains information on haul road maintenance). Avoid making deep ruts in road. Travel next to previous track to reduce rut-
Loaded machines always have the right of way, unless otherwise directed by supervisor.
· Speed is governed by smoothness of haul road, by favorable or adverse grades, and by underfoot conditions.
Keeping bowl low enhances stability at high speeds and on uneven roads.
· "Loping" is a rhythmic up-and-down motion of the machine. Slower speeds are necessary if uneven surfaces
Travel at a safe speed for the road conditions. Use higher speeds on smooth, level surfaces. Use lower speeds for rough,
rolling surfaces or when there is traffic congestion at work site.
Use service brakes, retarder and downshift as needed and reduce machine speed and engine RPM. Reduce machine speed
If a ground guide is encountered at blind spots or crossings, obey their signals.
Carry bowl low for best stability--but high enough so that bowl has adequate ground clearance. Under normal circum-
stances, proper travel height can be gauged by raising bowl until steering cylinders are level with the ground.
Select gear speed for downgrade that is same as gear speed needed for similar upgrade. Use transmission hold pedal to
keep transmission from upshifting.
If machine starts to slip when traveling across a hillside, turn machine to downhill side. Turn machine to downhill side
whenever machine is unstable.
When machine is loaded and traveling across a hillside, reduce speed significantly BEFORE turning uphill.
Failure to do so may cause machine to roll over, resulting in injury or death.
When machine is loaded and an uphill turn is required, turn uphill ONLY by making a wide turn at a very slow speed.
10. In the event of a brake failure, drop scraper bowl to aid in stopping machine.
11. If machine becomes stuck when traveling with load, perform the following to break free:
Raise bowl to maximum height.
Move machine forward or back, while at the same time steering in quick succession, first sharp left, then sharp right,
etc. This technique is called "duck walking."