Komatsu — 4.7.11.a CHANGING THE FRONT AXLE OIL

MAINTENANCE PLAN 4.7.11 MAINTENANCE EVERY 1000 HOURS OF OPERATION Carry out these operations together with those to be performed every 50, 250, 500 HOURS. 197 4.7.11.a CHANGING THE FRONT AXLE OIL DANGER • Oils, filters, the coolant and the battery are considered special waste and must be collected and disposed of ac- cording to the anti-pollution regulations in force. DANGER • Oils, filters, the coolant and the battery are considered special waste and must be collected and disposed of ac- cording to the anti-pollution regulations in force.

This operation must be carried out with the machine positioned on level ground and at operating temperature, so that the oil be- comes fluid and can be easily drained, which facilitates the elim- ination of any suspended solid particles. DIFFERENTIAL 1 - Remove the drain plug (2) and let the used oil flow out com- pletely, gathering it into a container with suitable capacity. While the oil flows out, remove the plug (1). Use a 17 mm spanner. 2 - Once the oil has been drained, put back the plug (2) and pour oil of the prescribed type through the hole (1), until reaching the level corresponding to the lower edge of the hole itself. 3 - Put back the plug (1).

FINAL REDUCTION GEARS 1 - Move the machine until the plug (3) is in low position on the vertical axis. 2 - Remove the plug (3) and let the used oil flow out, gathering it into a container with suitable capacity. Use a 17 mm spanner. 3 - Once the oil has been drained, move the machine until the plug (3), which serves also as level indicator, is positioned on the horizontal axis. 4 - Pour oil of the prescribed type until reaching the lower edge of the hole itself. 5 - Put back the plug (3). Carry out some forward and backward movements, stop the ma- chine and check the levels again. Always use oil of the prescribed type. (See “4.3 FUEL, COOL- ANT AND LUBRICANTS”).