Komatsu — MACHINE OPERATION SAFETY PRECAUTIONS

OM3012.1 Operation - Section 3 Operating Instructions Page 3-5 6. When getting a battery assist from one truck to another, all switches must be "Off" prior to making any connections. Be certain to maintain correct polarity. 4. Give special attention to braking and steering circuit warning lights. If warning lights come on, shut down the engine immediately and determine the cause. a. Connect one lead of booster cable to 24V posi- tive (+ ) post of battery needing assist, and other lead of the booster cable to the 24V posi- tive (+ ) post of auxiliary battery. 5. Insure headlights, worklights and taillights are in proper working order. Good visibility may prevent an accident.

Check operation of windshield wiper. b. Connect one lead of second booster cable to 24V negative (-) post of auxiliary battery, and then connect other lead of the booster cable to a good frame ground on the disabled truck away from the battery needing assist. 6. When truck body is in dump position, do not allow anyone beneath it unless body-up retaining pin or cable is in place. 7. Do not use the fire extinguisher for any purpose other than putting out a fire! If extinguisher is discharged, report the occurrence so the used unit can be refilled or replaced. This procedure will avoid the possibility of causing sparks near the battery where explosive gases may be present. NOTE:

HAULPAK ® Trucks are generally equipped with two 12 volt batteries connected in series to provide 24 volt output. Be sure to maintain correct voltage and polarity when connecting booster cables. Damage to electrical components may result if voltage and polar- ity are not correct. 8. Do not allow unauthorized personnel to ride in the truck. Do not allow anyone to ride on the ladder or on the deck of the truck. 9. Do not leave truck unattended while engine is running. Shut down engine before getting out of cab.

MACHINE OPERATION SAFETY PRECAUTIONS AFTER ENGINE HAS STARTED 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. 1. 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 sys- tem problem and have repairs made before re- suming operation. If any of the red warning lights come "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 resum- ing truck operation. 2. Operate each of the truck’s brake circuits at least twice prior to operating and moving the truck. These circuits include individual activation of the service brake, parking brake, brake lock (and emergency brake if equipped) from the operator’s cab. 1. Always sound the warning horn before moving the truck. When backing the truck, give back-up sig- nal (three blasts on air horn); when starting for- ward, two blasts on air horn. These signals must be given each time the truck is moved forward or backward. Look to the rear before backing the truck.

Watch for and obey ground spotter’s hand signals before making any reverse movements. Spotter should have a clear view of the total area at the rear of the truck. Activate each circuit individually with the engine running and with hydraulic circuit (air circuit if truck is equipped with air/hydraulic brakes) fully charged. If any application or release of any brake circuit does not appear proper or if sluggishness is ap- parent on application or release, shut the engine down and notify maintenance personnel. Do not operate truck until brake circuit in question is fully operational. 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. 3. Check gauges, warning lights and instruments before moving the truck to insure proper system operation and proper instrument functioning. 3. Check gauges and instruments frequently during operation for proper readings.