TM 10-3930-675-20-20139 00-1BOOM ASSEMBLY WEAR PLATES REPLACEMENT0139 00THIS WORK PACKAGE COVERSGeneralStyle A Wear Plate: Removal, InstallationStyle B Wear Plate: Removal, InstallationStyle C Wear Plate: Removal, InstallationINITIAL SETUPTools and Special ToolsTool kit, general mechanic’s (Item 31, WP 0204 00)Wrench, torque, 15-75 lb-ft capacity (Item 42, WP0204 00)Materials/PartsRag, wiping (Item 22, WP 0203 00)Tag, marker (Item 28, WP 0203 00)Washer, lock (P/N 920098.009) (4)Personnel RequiredTwoReferencesWP 0099 00WP 0198 00Equipment ConditionBoom and tophandler lowered to transport position(TM 10-3930-675-10)NOTEAfter initial 100 hours of RTCH operation, torque of boom assembly wear plates must be checked.GENERAL1.Wear plates are used on the boom assembly between sliding components as opposed to using lubrication grease andgrease fittings.2.Spacer blocks and spacers are used with boom wear plates and need to be replaced to maintain proper spacing betweenboom sliding assemblies.3.Wear plates are inspected at semi-annual intervals and must be maintained in good working order for the boom assemblyto function properly.4.There are three styles of wear plates used on the boom assembly: style A, B, and C. One wear plate for each style isreplaced in this work package.5.Appropriate notes and access procedures are included for removal and replacement of each style wear plate as applica-ble.6.The fixed boom uses four style A wear plates at the front. The extending boom uses four style A wear plates at the rear.
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