Komatsu — 16.3 IF BATTERY IS DISCHARGED

16. TROUBLESHOOTING 16.3.1 STARTING ENGINE WITH BOOSTER CABLE When starting the engine with a booster cable, do as follows: REMOVAL, INSTALLATION OF BATTERY CABLE 1. Open battery cover 1 . 2. Before removing the battery, remove the ground cable (normally connected to the negative - terminal). If any tool touches between the positive terminal and the chassis, there is danger of sparks being generated. Loosen the nut of the terminal and remove the wires from the battery. 3. When installing the battery, connect the ground cable last. Insert the hole of the terminal on the battery and tighten the nut. Tightening torque: 9.8 – 19.6 Nm (1 – 2 kgm, 7.2 – 14.5 lbft) 4. Close battery cover 1 .

PRECAUTIONS WHEN CONNECTING AND DISCONNECTING BOOSTER CABLE ¤ WARNING When starting the engine from another machine, connect the batteries in parallel. When connecting the cables, never contact the positive + and negative - terminals. When starting the engine with a booster cable, always wear safety glasses. Be careful not to let the normal machine and problem ma- chine contact each other. This prevents sparks from generat- ing near the battery which could ignite the hydrogen gas given off by the battery. If hydrogen gas explodes. It could cause serious injury. Make sure that there is no mistake in the booster cable connections.

The final connection is to the engine block of the problem machine, but sparks will be generated when this is done, so connect to a place as far as possible from the battery. Use care when removing the cables from the machine that has been started. Do not allow the cable ends to contact each other or the machine, to avoid hydrogen explosion. NOTICE The size of the booster cable and clip should be suitable for the battery size. The battery of the normal machine must be the same capacity as that of the engine to be started. Check the cables and clips for damage or corrosion. Make sure that the cables and clips are firmly connected.

Check that the safety lock levers and parking brake levers on both machines are securely at the LOCK position. Check that all control levers are at the neutral position. 2-85