- Regular inspection: Waterproof nut hman a nih hnuah enfiah fo tur a ni. He inspection-ah hian nut tightness leh sealing components dinhmun te pawh a tel tur a ni. Looseness chhinchhiahna leh sealing components te chu tar emaw deformation emaw chhinchhiahna atan nut en rawh. Nut chu a lo chhuak a nih chuan torque tarlan tawhah chuan khauh takin khih rawh; Sealing components te a chhiat chuan thlak nghal tur a ni.
- Force tam lutuk pumpelh rawh: hman lai hian waterproof nut chu pawn lam thiltihtheihna tam lutuk hnuaia dah lo turin fimkhur rawh. Stretching tam lutuk, compression, emaw twisting emaw hian nut structure leh sealing performance a tichhe thei a ni. Entirnan, hmanrua enkawl emaw, hman emaw lai hian, a hman dan dik loh avanga waterproof nut a chhiat loh nan hnathawh dan tur dik tak zawm tur a ni.
- Proper disassembly leh reassembly: Waterproof nut chu tihchhiat a ngai a nih chuan, nut leh bolt tihchhiat loh nan hmanraw leh hman dan dik tak hmang ang che. Disassembly hnuah, nut leh sealing components te a chhiat loh chuan tihfai leh enfiah hnuah an inzawm leh thei a ni. Reinstall leh hunah chuan pre-installation preparation leh installation step te pawh i zawm tur a ni a, chu chuan waterproof performance a nghawng loh nan a ni.