Komatsu — PASSING

OM3030.1 Operation - Section 3 Operating Instructions Page 3-7 HAULING 1. Always stay alert! If unfamiliar with the road, drive with extreme caution. Cab doors should remain closed at all times if truck is in motion or unattended. 2. Obey all road signs. Operate truck so it is under control at all times. Govern truck speed by the road conditions, weather and visibility. Report haul road conditions immediately. Muddy or icy roads, pot holes or other obstructions can present hazards. 3. When backing the truck, give back-up signal (three blasts on the horn); when starting forward, two blasts on the horn. These signals must be given each time the truck is moved forward or backward. 4.

Use extreme caution when approaching a haul road intersection. Maintain a safe distance from oncoming vehicles. 5. Maintain a safe distance when following another vehicle. Never approach another vehicle from the rear, in the same lane, closer than 50 ft. (15 m). When driving on a down grade, this distance should not be less than 100 ft. (30 m). 6. Do not stop or park on a haul road unless unavoidable. If you must stop, move truck to a safe place, apply parking brake, and shut down engine before leaving cab. Block wheels securely and notify maintenance personnel for assistance. 7.

Before starting up or down a grade, maintain a speed that will insure safe driving and provide effective retarding under all conditions. Refer to Grade/Speed decal in operator’s cab. 8. When operating truck in darkness, or when visibility is poor, do not move truck unless all headlights, clearance lights, and tail lights are on. Do not back truck if back-up horn or lights are inoperative. Always dim headlights when meeting oncoming vehicles. 9. If the "Emergency Steering" light and/or "Low Brake Pressure Warning" light ( if equipped ) illuminate during operation, steer the truck immediately to a safe stopping area, away from other traffic if possible. Refer to item 6 above. 10.

The Statex III w/Fuel Enhancement system monitors wheel motor, ambient, and static exciter temperatures. If any one of these values is outside the limits established, the Statex III controls will cause the engine to increase to 1650 RPM. (Normal engine RPM for haul road/retarding operation is 1250 RPM.) 11. When maximum truck speed is reached, haul trucks equipped with Statex III w/Fuel Enhancement (Fuel Saver) system will experience a DECREASE in engine RPM. NOTE: This is different from trucks equipped with Statex II or Statex III without Fuel Enhancement, which increase RPM upon reaching speed limit . 12. Check tires for proper inflation periodically during shift.

If truck has been run on a "flat", or under-inflated tire, it must not be parked in a building until the tire cools . PASSING 1. Do not pass another truck on a hill or blind curve! 2. Before passing, make sure the road ahead is clear. If a disabled truck is blocking your lane, slow down and pass with extreme caution. 3. Use only the areas designated for passing.