OM3050 7/09 Operating Instructions - Section 30 Page 30-7 AFTER ENGINE HAS STARTED 4. If any application or release of any brake circuit appears sluggish or improper, or if warning alarms are activated on application or release, shut the engine off and notify maintenance per- sonnel. DO NOT operate the truck until the brake circuit in question is fully operational. 5. Check the gauges, warning lights and instru- ments before moving the truck to ensure proper system operation and proper instrument func- tioning. Pay special attention to braking and steering circuit hydraulic warning lights. If warn- ing lights come on, shut off the engine immedi- ately and determine the cause.
Do not leave the truck unattended while the engine is running. Move the directional control lever to PARK and turn off the engine before leaving the truck. 1. Become thoroughly familiar with steering and emergency controls. After the engine has been started, DO NOT accelerate engine speed or drive truck until low pressure and warning sys- tems are normal, and the coolant temperature is at least 71°C (160°F). 6. Ensure the headlights, work lights and taillights are in proper working order. Good visibility may prevent an accident. Check operation of the windshield wipers. 2. With the service brakes applied, move the directional control to the NEUTRAL position, then apply the wheel brake lock.
Release the service brakes. Test the truck steering in extreme right and left directions. If the steering system is not operating properly, shut the engine off immediately. Determine the steering system problem and have it repaired before resuming operation. 7. Any time the directional control lever is placed in the FORWARD or the REVERSE position, the engine speed will go to 1,600 rpm for 15 seconds in preparation for truck movement. If the throttle pedal is not touched within 15 sec- onds, engine speed will return to 750 rpm. 8. Any time the truck is moving and engine rpm is above 1,600 rpm and the throttle pedal is released, engine rpm will hold at 1,600 rpm.
If the throttle pedal is not touched within 15 sec- onds, then engine rpm will return to 750 rpm. 3. Operate each of the truck's brake circuits at least twice prior to operating and moving the truck. These circuits include individual activa- tion from the operator's cab of the service brake, parking brake, and wheel brake lock. With the engine running and with the hydraulic circuit fully charged, activate each circuit indi- vidually. a. Park the truck on level ground. b. To operate the park brake, place the direc- tional control lever in the PARK position. c. To operate the wheel brake lock, apply the service brake and move directional control lever to NEUTRAL.
Release service brakes, and apply wheel brake lock. Turn the wheel brake lock OFF, then back ON again. d. Release wheel brake lock and apply service brakes several times. e. With service brakes applied, move direc- tional control lever to PARK.