The tailgate is the rear door or panel of the hopper that opens to allow collected debris to be discharged. On many sweepers, the tailgate is part of the hopper sealing system and plays an important role in containing debris, water, dust, and airflow during operation.
A properly functioning tailgate must open smoothly, close securely, and seal correctly before sweeping begins. Worn hinges, damaged seals, loose latches, or debris buildup around the tailgate can cause leaks, dust escape, or incomplete dumping.
A tailgate seal is a rubber or flexible sealing component that prevents air, water, and debris from escaping around the rear of the hopper. It helps maintain containment and, on air-based sweepers, supports proper airflow and suction performance.
Tailgate seals should be inspected regularly for cracks, flattening, tears, gaps, or missing sections. A damaged seal can reduce sweeping efficiency, create debris leakage, and increase dust emissions during operation.
A tank strainer filters debris from water before it enters the pump, spray bar, or nozzle system. It helps protect water-system components from sediment, leaves, rust, and other particles that may be present in the tank.
A clogged tank strainer can reduce water flow and weaken dust suppression. Regular cleaning is especially important when using non-potable water or operating in dusty environments where tank contamination is more likely.
A tension spring applies pulling force to a component and helps maintain position, pressure, or return movement. Sweepers may use tension springs in broom suspension, linkages, doors, belts, or return mechanisms.
Correct spring tension helps keep components operating consistently. A stretched, broken, or missing spring can cause poor broom contact, incomplete return movement, vibration, or uneven wear.
A terminal block is an organized electrical connection point where multiple wires can be joined or distributed. It is commonly used inside electrical panels, junction boxes, and control systems.
Terminal blocks make troubleshooting and service easier by keeping circuits organized and accessible. Loose screws, corrosion, moisture, or damaged wires at a terminal block can cause intermittent electrical problems or complete function failure.
Thermal protection is a system or design feature that helps prevent damage caused by excessive heat. It may protect engines, hydraulic systems, electric motors, pumps, control modules, or other heat-sensitive components.
Thermal protection may trigger a warning, reduce power, shut down a component, or limit operation until temperatures return to a safe range. Operators should never ignore overheating warnings because continued operation can lead to major component damage.
Throttle control adjusts engine speed to provide the power needed for travel, sweeping, hydraulic operation, airflow, or dumping. Depending on the sweeper design, throttle control may be manual, electronic, or managed automatically by the machine’s control system.
Correct throttle settings help maintain proper broom speed, fan performance, hydraulic flow, and water-system operation. Running the engine too low may reduce sweeping performance, while excessive throttle can increase fuel use, noise, heat, and wear.
A tie-down point is a reinforced location on the machine used to secure the sweeper during transport. These points are designed to handle the forces created when the machine is chained or strapped to a trailer or transport vehicle.
Using the correct tie-down points helps prevent machine movement and damage during transport. Operators should never secure a sweeper to weak brackets, hoses, broom arms, or components not designed for transport loads.
Tire scrub is the friction that occurs when tires drag, slide, or twist against the pavement during tight turns or misaligned movement. It can increase tire wear and place additional stress on steering and suspension components.
In sweeping operations, tire scrub may occur during repeated curb work, parking lot turns, or low-speed maneuvering in tight areas. Operators can reduce tire scrub by using smooth steering inputs and avoiding unnecessary sharp turns when possible.
Torque is rotational force used to tighten fasteners or turn rotating components. In street sweepers, torque applies to broom drives, fan drives, conveyor systems, wheel hardware, hydraulic motors, and fasteners throughout the machine.
Correct torque is important for both safety and reliability. Under-tightened fasteners can loosen during vibration, while over-tightened fasteners can stretch, strip, or damage components.
Traffic control includes the signs, cones, arrow boards, warning lights, shadow vehicles, lane closures, and procedures used to protect workers, operators, motorists, and pedestrians during sweeping. It is especially important for highway, DOT, airport, bridge, and roadside sweeping.
Proper traffic control allows sweeping to be completed safely in areas with moving vehicles or limited visibility. Operators should follow the work-zone plan, site requirements, and local regulations when sweeping near traffic.
A transfer case is a drivetrain component that distributes power to different axles or driveline outputs. It may be present on certain chassis configurations, especially those designed for specialized traction or power distribution.
While not unique to sweepers, the transfer case can affect vehicle mobility and drivetrain performance. Proper fluid level, maintenance, and inspection help prevent noise, overheating, leaks, or driveline failure.
A transfer station is a facility where collected sweepings, refuse, or debris may be unloaded, consolidated, processed, or moved for final disposal. Municipalities and contractors may use transfer stations to improve route efficiency and reduce long disposal trips.
Disposal procedures depend on debris type, local regulations, and site requirements. Material collected from streets may contain sediment, trash, organic material, metals, or contaminants, so operators should follow approved dumping and handling practices.
A trash screen captures larger debris while allowing air or water to pass through. In a sweeper, it may protect airflow passages, pumps, fans, spray systems, or other downstream components from blockage.
Trash screens must be cleaned regularly to remain effective. A clogged screen can reduce airflow, water flow, suction, or system efficiency, depending on where it is installed.
Travel mode is the machine configuration used when driving between job sites, routes, or disposal areas. In travel mode, brooms, pickup heads, spray systems, and other sweeping components are typically raised, secured, and disengaged.
Using travel mode correctly helps prevent unnecessary broom wear, component damage, and road hazards. Operators should verify that all sweeping attachments are stowed before driving at road speed or leaving the work area.
Troubleshooting is the step-by-step process of identifying the cause of a machine problem and determining the proper corrective action. It usually begins with observing symptoms, checking simple causes, and then moving through electrical, hydraulic, mechanical, or airflow systems as needed.
Effective troubleshooting saves time and prevents unnecessary parts replacement. Good service manuals, operator feedback, fault codes, pressure readings, inspection results, and maintenance history all help technicians diagnose problems accurately.
A truck-mounted sweeper is a street sweeper built on a commercial truck chassis. The chassis provides road travel, cab, drivetrain, brakes, and vehicle systems, while the sweeper body provides debris collection, dust control, hopper storage, and dumping capability.
Truck-mounted sweepers are commonly used by municipalities, DOTs, airports, contractors, and industrial fleets because they combine road-speed mobility with heavy-duty sweeping performance. Proper chassis selection is important for payload, stability, braking, service access, and long-term reliability.
Turbulence is irregular or disrupted airflow inside a duct, pickup head, fan housing, hopper, or air passage. It can be caused by sharp turns, restrictions, leaks, damaged parts, debris buildup, or poor airflow balance.
In air-based sweepers, excessive turbulence can reduce pickup efficiency and make debris separation less effective. Maintaining smooth, sealed, and clean airflow paths helps improve suction, dust control, and overall system performance.