TM 10-4210-235-13Table 4-1. Unit Preventive Maintenance Checks and Services for Fire Suppression EquipmentTrailer Set - continuedITEMITEM TO BENOT FULLY MISSIONNOINTERVALCHECKED ORPROCEDURECAPABLE IF:SERVICEDUnit Functional Checkc. On the trailer mounted- continuedextinguisher assembly, pull lockpin and remove fire hose nozzlesfrom nozzle bracket Walk towardthe auxiliary mobile hose reel cartwhile pulling the hose assemblycompletely off drum.4-8