1. Faʻapipiʻiina ma le faʻaitiitiga o le hub, ma lona laʻititi eleele kilia≥300mm lea e fetaui ma le paʻu o le 8.25R16;
2. Fa'aaogaina loka va'aiga va'aiga uili, lea e fa'atatau i auala palapala ma passiability lelei;
3. Nozzles lubrication, ma e leai se manaomia mo le greasing tausiga i lona olaga atoa.