Komatsu — MACHINE OPERATION SAFETY PRECAUTIONS

OM3044 Operating Instructions - Section 30 Page 30-5 AFTER ENGINE HAS STARTED MACHINE OPERATION SAFETY PRECAU- TIONS 1. After engine has started, do not accelerate engine speed or drive truck until low pressure and warn- ing systems are normal, and the coolant tempera- ture is at least 160°F (71°C). After the truck engine is started and all systems are functioning properly, the operator must follow all local safety rules to insure safe machine operation. 2. Become thoroughly familiar with steering and emergency controls. Test the truck steering in extreme right and left directions. If the steering system is not operating properly, shut engine down immediately.

Determine the steering system problem and have repairs made before resuming operation. If any of the red warning lights turn ON or if any gauge reads in the red area during truck operation, a malfunction is indicated. Stop truck as soon as safety permits, shut down engine if problem indi- cates and have problem corrected before resuming truck operation. 3. Operate each of the truck's brake circuits at least twice prior to operating and moving the truck. These circuits include individual activation from the operator's cab of the service brake, parking brake, and brake lock (also emergency brake, if equipped).

With the engine running and with the hydraulic circuit fully charged, activate each circuit individually. 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 down and notify mainte- nance personnel. Do not operate truck until brake circuit in question is fully operational. Operating truck with stalled or free spinning wheel motors may cause serious damage to wheel motors! If truck does not begin to move within 10 seconds after depressing throttle pedal (Selector Switch in a drive position), release throttle pedal and allow wheels to regain traction before acceler- ating engine again. 4.

Check gauges, warning lights and instruments before moving the truck to insure proper system operation and proper instrument functioning. Give special attention to braking and steering circuit hydraulic warning lights. If warning lights come on, shut down the engine immediately and deter- mine the cause. 1. Always look to the rear before backing the truck. Watch for and obey ground spotter's hand sign before making any reverse movements. Sound the warning horn (3 blasts). Spotter should have a clear view of the total area at the rear of the truck. 2. Operate the truck only while properly seated with seat belt fastened.

Keep hands and feet inside the cab compartment while truck is in operation. 5. Insure headlights, worklights and taillights are in proper working order. Good visibility may prevent an accident. Check operation of windshield wiper. 3. Check gauges and instruments frequently during operation for proper readings. 6. When truck body is in dump position, do not allow anyone beneath it unless body-up retaining pin or cable is in place. 4. Observe all regulations pertaining to the job site's traffic pattern. Be alert to any unusual traffic pat- tern. Obey the spotter's signals. 7. Do not use the fire extinguisher for any purpose other than putting out a fire!

If extinguisher is dis- charged, report the occurrence so the used unit can be refilled or replaced. 5. Match the truck speed to haul road conditions and slow the truck in any congested area. Keep a firm grip on steering wheel at all times. 8. Do not allow unauthorized personnel to ride in the truck. Do not allow anyone to ride on the ladder of the truck. 6. Do not allow engine to run at IDLE for extended periods of time. 7. Check parking brake periodically during shift. Use parking brake ONLY for parking. Do not use park brake for loading/dumping. Do not attempt to apply parking brake while truck is moving! 9. Do not leave truck unattended while engine is running.

Shut down engine before getting out of cab.