EVERY 2000 HOURS SERVICE i. ALTERNATOR AND STARTING MOTOR As the hours of engine employ- ment indicate that the brushes are already worn out, you should re- quest repair from a Komatsu distributor. I. BUCKET HINGE PIN AND BUCKET LINK PIN m.HYDRAULIC TANK STRAINER They should be repaired every 1000 hours, if the machine is fre- quently operated at night. ENGINE VALVE CLEARANCE Ask Komatsu distributor to check engine valve clearance be- cause special tools should be used. 1. After removing plugs (1) and (21, refill gear oil (SAE140 GL-5) from hole of plug (I) until new oil comes out from grease fitting inside. Amount of refill oil:
When changing the oil in the hy- draulic tank, drain the oil from the tank and clean the strainer. Loosen bolts (1) and (31, then remove covers (2) and (4). Loosen bolt (51, remove strainer cover (61, then remove strainer (8) together with spring (7). Remove any dirt from strainer (81, then wash in clean light oil or flushing oil. If strainer (8) is broken, replace it with a new part. k. BRAKE DISC Ask Komatsu distributor to check and repair brake disc. * Approx. 0.278 2. + Install plugs (I 1 and (2). After removing bucket pin, be sure to refill with oil. Never use grease in place of gear oil. * - 102- w-04312