MAINTENANCE O. BOOM & ARM 1. Inspect Boom and Arm structures for signs of excessive wear and damage. See Figure 4.21A. 2. Should repair or replacement be necessary, con- tact an authorized KOBELCO Service Dealer for assistance. NOTE Remove any excessive grease form the attachment pin connecting areas to inspect welding. See Figure 4.21A. FIGURE 4.21A WARNING DISCONNECT BATTERIES BEFORE WELDING ON THIS MACHINE. SEE FIGURE 4.21B. CONNECT WELDER GROUND CABLE WITHIN 1M (3’-3”) AWAY FROM AREA TO BE WELDED. 4 DISCONNECT BATTERY NEGATIVE (-) CABLE WHEN INSPECTING ELECTRICAL OR WELDING FIGURE 4.21B SK32004057 P. CUTTING EDGE, BUCKET TEETH & SIDE CUT- TERS 1.
Inspect bucket teeth and side cutters for signs of excessive wear and damage. See Figure 4.21C. MAKE SURE CUTTING EDGES AND TEETH ARE IN GOOD WORKING CONDITIONS 2. Should repair or replacement be required, fol- low bucket manufactures recommendations. CAUTION Wear goggles, safety shoes, hard hat, work clothes and work gloves to perform inspection and maintenance on this machine. FIGURE 4.21C 3. Inspect cutting edge for signs of excessive wear and damage. See Figure 4.21C. 4. Should repair or replacement be required, con- tact your KOBELCO Dealer Service Depart- ment for proper advice. NOTE Make sure that bolts on cutting edges are properly tighten.
If bolts are loose, remove bolts, clean threads on bolts and nuts, apply locktite #262 and torque them to specs. Refer to the Specifications Section in this book. SK210(LC)/SK250(LC)–VI Dynamic Acera OM, 09/00 Rev.2 4-21 Make sure to clean these areas during the inspection