1. Pump kha titawp la, accident a thlen loh nan maintenance hmain pressure chu thlah rawh.
2. Pump i disassemble dawnin assembly dik tak turin mark rawh.
3. Maintenance neih lai hian hliam tuar lo turin himna ngaihtuah thin ang che.
4. Maintenance zawhah pump hnathawh dan pangngaia hman theih turin test run neih tur a ni.
