Operation - Section 3 OM3006.1 04/98 Page 3-6 Operating Instructions LOADING 8. Before starting down a grade, maintain a speed that will insure safe operation and provide effec- tive retarding under all conditions. 1. Pull into the loading area with caution. Remain at a safe distance while truck ahead is being loaded. 2. Do not drive over unprotected power cables. When descending a known grade with a loaded truck, the operator should adjust the speed of the truck if necessary, to preselect a transmission gear range , so that operation can be maintained within the speeds listed on the Retarding Capac- ity decal located inside the cab on the left front cab post (Shown below).
Either the retarder con- trol lever or the foot-operated brake pedal can be used to control the speed of the truck. 3. When approaching or leaving a loading area, watch out for other vehicles and for personnel working in the area. 4. When pulling in under a loader or shovel, follow ‘‘Spotter’’ or ‘‘Shovel Operator’’ signals. The truck operator may speed up loading operations by observing the location and loading cycle of the truck being loaded ahead, then follow a similiar pattern. 5. Operator should remain in truck cab with engine running while truck is being loaded. Place Transmission Range Selector in ‘‘ N eutral’’ and apply the Brake Lock Switch.
If operator must leave truck cab during loading, engine must be shut down and parking brake applied. DO NOT use emergency brake for parking. Remain far enough away from truck to avoid being struck by flying material. 6. When truck is loaded, pull away from shovel as quickly as possible, but with extreme caution. HAULING 1. Always stay alert! If unfamiliar with the road, drive with extreme caution. Retarder Operation 2. Govern truck speed by the road conditions, weather and visibility. Two lists are provided on the Retarding Capacity decal, one a continuous rating and the second a short-length rating. Both lists are matched to the truck at maximum Gross Vehicle Weight. 3.
Operate truck so it is under control at all times. 4. Use extreme caution when approaching a haul road intersection. Maintain a safe distance from oncoming vehicles. The continuous numbers on the chart indicate the combination of speeds and grades which the vehicle can safely negotiate for unlimited time or distance. 5. Obey all road signs. 6. Always dim headlights when meeting oncoming vehicles. The short-length numbers listed on the chart indi- cate the combination of speeds and grades which the vehicle can safely negotiate for three minutes. These speeds are faster than the continuous val- ues, reflecting the thermal capacity of various system components.
System components can accept heating at a higher-than-continuous rate for a short period of time, beyond which the sys- tem would become over-temperature. 7. Maintain a safe distance when following another vehicle. Never approach another vehicle from the rear, in the same lane, closer than 15 m (50 ft). When operating on a down grade, stay at least 30 m (100 ft) away.