1. Bolt hpe jep yu ai
Slewing drive hpe bungli galaw hpang ai hpang, bolt ni hpe shaning shagu jep yu ra ai. Shawng nnan na hkying hkum 100 daram lang ngut ai hpang, masat da ai torque de bai-bolt ni hpe bai shinggrup da u. N bung ai bungli galaw ai masa hta, jep joi ai lam ni hpe n law htum galaw lu ai. Loose bolt ni hpe mu yang, bolt, washer, nut yawng hpe kalang ta galai ra ai.
2. Sau bang ai
Slewing drive arung arai ni hta, slewing bearing a gat shingjawng ai lam ni hte n-gun n rawng ai roller bearing ni hpe, jak rung kaw shawng - sau chya da ai. Worm hte slewing bearing lapran na matut mahkai shara hpe n lang shi yang sau bang ra ai. Factory kaw pre-grease galaw da ai raitim, re-grease hpe bang ai shaloi, jak bungli galaw ai lam hpe hkra machyi hkra n galaw na matu, dawdan ra ai.