Unlike other complex units Lechler’s 5TM was developed and designed to be easily repaired on site so that you don’t have to return it to the manufacturer. All rotary indexing machines use a combination of gears and bearings to operate. The 5TM unit is a simple unit to refurbish, in comparison to others. The 5TM was designed with larger sized gears which make periodic servicing so easy. Each unit comes with a full color photo step by step Operational Manual showing users how to care for their machine. It includes color photos comparing a worn component to a new component which allows you to decide if it requires replacement or not. Other tank cleaning units use small stacked gears arranged in a complex array pattern, making it complicated to repair. The only tool required for a Lechler 5TM nozzle is a standard easily obtained spanner wrench. Other units require a multitude of special tools and various snap ring type pliers to deal with retaining rings.