Page 21 MAINTENANCE SECTION 2 WHEEL HUB NUTS If wheel hub nuts (1) are loose, tire wear will be increased and accidents may be caused. If any hub nuts are loose, tighten them to the specified tighten- ing torque. * Tightening torque: 48 t 5 kgm l If any wheel bolt is broken, replace all bolts for that wheel. f Always rotate in the direction of tightening when checking for loose nuts. EVERY 500 HOURS SERVICE * Maintenance for every 50. 100 and 250 hours should be carried out at the same time TRANSMISSION OIL FILTER 1 Remove drain plug (1) at the bottom of the filter case, and drain the oil. After draining the oil, tighten the plug.
2 Hold case (2) and loosen center bolt (3), then remove case (2). 3 Remove the element, and clean the inside of the case. Assemble a new element, then install the case. * When tightening center bolt (3), install so that chamfered surface (4) of the washer faces the hexagonal head of the canter bolt. w 4 Be careful not to apply excessive torque to center bolt (3). Tightening torque: 18.5 21.5 kgm 4 Run the engine for a short time at idling speed, then stop the engine. Check that the oil is at the specified level (for details, see WHEN REQUIRED). * * Use a genuine Komatsu element Replace the filter gasket and o-rings with new parts.
Coat the gasket and O-rings with clean engine oil before installing. *