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Boom & AttachmentsXR620/621/842/1045/1245/1254/1267/1534/2050/30342. Note order and number of shims and spacers used at slide block installation.NOTE: Not all slide blocks may have shims and spacers installed.3. Remove two screws and two washers securing slide block to boom section.4. Remove slide block, shims, and spacer from boom.5. Apply Loctite Blue 242® to the two screws that will attach slide block to boom section. Apply toportion of screw threads that will engage with slide block nut.6. Install new slide block and spacer with two screws and washers. Do not tighten screws if shims are tobe inserted between slide block and spacer, otherwise tighten screws.7. Insert shims between slide block and spacer.8. Tighten screws.9. Repeat steps 1-8 for remaining slide blocks at location.10. Check operation of boom. Pay particular attention to binding caused by excessive friction betweenboom and new slide blocks for full length of boom stroke.10-10 INSPECT BOOM ROLLERSEVERY 250 HOURS OFOPERATIONPerform the following procedure to inspect the boom rollers:PersonnelSpecial tools and equipment– TASK REQUIREMENTS –One mechanicSafety glassesGrease gunParts and consumable materials Danger tags (2)Grease, NLGI #2, extreme pressureBe very careful when working near moving boom parts and the chain. Seriousinjuries may result when fingers or loose clothing get caught in moving chain orboom components.Service Manual Rev 01 – 05/10 10-21P/N 24933-000