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Model DST-4® Dustless Street Sweepers

The TYMCO Model DST-4, mid-sized, dustless sweeper utilizes the same state-of-the-art technology as TYMCO's proven DST-6. The DST-4 removes dirt, dust and debris from the sweeping surface, and uses filters that have a Minimum Efficiency Reporting Value (MERV) 16 Rating, meaning they are able to capture a minimum of 95% of 0.30 micron and larger size particles, far exceeding PM10 requirements.

TYMCO's patented filtration system enables the DST-4 to be equally efficient in wet or dry conditions, so you don't have to avoid puddles and leave debris behind. Our DST System when coupled with our Regenerative Air System produces the most technologically advanced street sweeper available today. Both our DST-4 and DST-6 set the performance standards for particulate matter removal in the U.S. and Canada.

Mounted on a highly maneuverable cabover "standard truck chassis," the DST-4 can travel to the job site at legal speed limits and then perform the dustless cleaning required in industrial and municipal applications.

The dustless features are engineered to allow the sweeper to perform in all types of weather conditions with no operator adjustments required.

TYMCO Sweeper Design

TYMCO Sweepers are designed in way that truly reflects the culture at TYMCO.  When our engineers approach a challenge or a need on the sweeper, they work to develop straightforward solutions.  For example, all TYMCO Sweepers use True Regenerative Air.  This design delivers the simplest approach as well as the highest performance with the lowest downtime as compared to other sweeper technologies.

  • True Regenerative Air
  • Smart Gutter Broom
  • Easy Access to Components
  • Operator Friendly Design
  • High Productivity
  • Low Maintenance

More About TYMCO Sweeper Design


Pick-Up Head

The TYMCO Model DST-4 Pick-up head incorporates a full-width 78 inches of blast and suction. The Model DST-4 heavy duty Pick-Up Head is designed to work effortlessly with the TYMCO Regenerative Air System to pick up a wide variety of debris from leaves and trash to heavy dirt, sand, rocks, and most importantly, ultra-fine particles.


High dump function that lifts the hopper up to 72 inches for dumping into various size containers and most 30 cubic yard roll off containers. The TYMCO Model DST-4 is equipped with powerful piggyback hopper lift cylinders. These heavy duty dump cylinders allow the Model DST-4 to high dump even the heaviest of loads. A safety strut is permanently attached to the hopper frame for easy accessibility. When the hopper is in the up position, simply insert the steel pin into the hole on the built-in safety strut.

Gutter Brooms

Gets debris out of the curb/gutter with 36" diameter gutter brooms with in-cab controls. The tilt gutter broom allows you to reach down into the deepest gutters. TYMCO's 36" gutter broom design has a pressure sensing sequence valve to automatically determine the digging pressure needed for different debris; therefore, customers get maximum broom bristle life and cleaning performance.

Variable Speed Gutter Brooms

From inside the cab, the operator can control the speed of the gutter brooms. This allows the operator to match the speed of the truck while sweeping to lessen the amount of dust being kicked up.

Dust Control

TYMCO incorporates a high efficiency multi-pass cylindrical centrifugal dust separator for maximum particulate separation and sweeping performance. Designed for easy clean out and maintenance.

On board 77 gallons of water for dust control around the gutter brooms and inside the hopper. For below freezing conditions, the sweeper will continue sweeping dustless without using water.

DST System

The small amount of air that is diverted from the system to achieve the dustless effect is filtered through TYMCO’s patented DST system. The DST System will filter the diverted air through a pre-cleaner and cartridge filters. These filters have been determined through independent laboratory testing using the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) 52.2 testing standards to have a Minimum Efficiency Reporting Value (MERV) 16 Rating, meaning they are able to capture a minimum of 95% of 0.30 micron and larger size particles. That is 1/200 of the diameter of a human hair! The best part is that both the pre-cleaner and cartridge filters are washable, ensuring long service life.

The DST-4 can be used in wet or dry conditions because the combination of our centrifugal dust separator and pre-cleaner will spin out moisture before it sees the cartridge filters.

While sweeping, the cartridge filters are cleaned automatically by an intermittent air pulse which keeps the filters operational in most dusty applications.

Power Unit

The Model DST-4 sweeper is powered by a 56 horsepower Kubota auxiliary engine. This engine powers all hydraulic functions through a gear driven pump and directly belt drives the blower wheel.

Blower Wheel

TYMCO uses a natural rubber coated aluminum blower wheel which we have found to be the most abrasion resistant as well as reduces fuel consumption because of its lightweight design.

Rear View Camera

Cities, streets, alleyways, industrial areas are full of obstacles that need to be seen when backing up. The rear view back-up camera with in-cab display allows the operator to view the area behind the Model DST-4 while backing up providing additional safety and peace-of-mind to both Model DST-4 operators and owners. Additional cameras are also available to view the pick-up head and gutter brooms.

Truck Types

Isuzu NQR


Stainless Steel Hopper and Dust Box

For maximum corrosion and salt spray resistance all interior hopper body sheet surfaces to be fabricated with low carbon, high chrome stainless steel.

The hopper weldment, hopper door, skimmer hood, hopper screen and dust box assemblies are included in these options. Dust separator inlet scroll and door are not stainless steel. Stainless steel bolt-on blower housing, and dust separator are also available.

Pick-Up Head Curtain Lifter

Hydraulic actuated and retractable roller assembly that provides the pick-up head with the ability to sweep large volume of light debris. Electronically controlled in cab.

Street Sweeping & The Environment

The Model DST-4 has several environmental benefits, features, and options including:

  • Doing More With Less
  • Water Efficiency
  • South Coast AQMD Rule 1186 Certification
  • ETV Verified for PM10 and PM2.5 Efficiency

Video Gallery

Model DST-4® Regenerative Air Sweeper®

Diesel Auxiliary Engine / Diesel Cabover Chassis

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Sweeper Auxiliary Engine

  • Engine - Kubota V2403-CR-TE4B FT4, 4 cyl.
  • Displacement - 148.5 in3 (2.4 L)
  • Net torque - 140 lb-ft (190 Nm) @ 2100 RPM
  • Power - 56 hp (41.7 kW) @ 2600 RPM
  • Air cleaner - Heavy duty, w/pre-cleaner, and in-cab air restriction indicator w/gauge.
  • Oil filter - Spin on, full flow
  • Cooling - Liquid
  • Diesel fuel supplied from chassis fuel tank
  • Fuel tank capacity - 30 gal (113 L)
  • Auxiliary engine protection system
  • Fuel/water separator with WIF sensor
  • Fuel filters - 10 μm primary, 5 μm secondary

Blower, Rubber Coated

  • Aluminum alloy, high volume, open face turbine
  • Bearings - (2) Anti-friction
  • Housing - Steel w/abrasion resistant, replaceable liner
  • Drive - Heavy duty power band

Dust Separator, Rubber Lined

  • Type - Cyclonic, multipass, centrifugal separation
  • Cylindrical area - 20 x 22.5 in (51 x 155 cm)
  • Location - Adjacent to hopper
  • Particulate removal achieved through 22.5 in (57 cm) skimmer slot into skimmer hood
  • Inspection/cleanout port w/extended plug handle


  • Capacity (volumetric) - 4.0 yd3 (3.06 m3)
  • Capacity (useable) - 3.1 yd3 (2.37 m3)
  • Construction - Welded steel plate
  • Dump door opening- 77.25 x 70 in (196 x 178 cm)
  • Inspection door - (1) Right side of hopper, 8.5 x 8.5 in (21.5 x 21.5 cm)
  • Dump method - Hydraulic tilt
  • Dump direction - Rear
  • Dump floor angle - 37°
  • Dumping height - 72 in (183 cm)
  • Dump clearance height - 154 in (391 cm)
  • Dump door hydraulically opened/closed
  • Hopper screen lifts with door for easy cleaning
  • Hopper deluge
  • Abrasion protection package
  • Hopper drip edge extension

Pick-Up Head

  • Type - Dual chamber
  • Width (inside dimension) - 78 in (198 cm)
  • Pick-up head area - 2028 in2 (1.31 m2 )
  • Suspension - (4) springs, (2) drag links
  • Skids - DUO-SKID®, long life carbide
  • Suction hose diameter - 12 in (30.5 cm)
  • Pressure hose diameter - 12 in (30.5 cm)
  • Reverse pick-up head system

Gutter Brooms, Twin, Patented

  • Drive - Constant speed non-reversible hydraulic motor
  • Adjustment - Adjustable for down pressure, pattern and wear
  • Down pressure - Automatic
  • Flexibility - Integral anti-damage "swing away" relief valve
  • Broom - Steel wire vertical digger 36 in (91.5 cm)
  • Variable speed control
  • Hydraulic tilt - Adjust for curb depth
  • Floodlight – (2) LED
  • Parabolic mirror – (2) 10.5 in (26.67 cm) dia.

Hydraulic System

  • Operates gutter brooms, dump door and pick-up head
  • Drive - Gear driven from auxiliary engine
  • Flow rate - 5 GPM (18.925 LPM)
  • Reservoir - 13.5 gal (51.1 L) with 80 mesh suction strainer, sight/temperature gauge, oil cooler
  • Filter - 10 µm in-line
  • Hydraulic oil - Extended life 10W ISO 46
  • Cooler – Air to oil
  • Auxiliary hydraulic system

Dust Control System

  • Water spray nozzles for dust suppression
  • Pump - Electric diaphragm
  • Reservoir - Polyethylene, 77 gal (291.5 L)
  • Filter - 80 mesh in-line
  • Low water shut-off - Safety shut-off with audible and visual indicator in cab
  • Spray nozzles - At gutter brooms and inside hopper
  • Fire hydrant and garden hose connections
  • Hydrant fill hose - 20 ft (6 m)
  • High output water system

Dustless Filtration System

  • An external mounted modular filtration system with automatic BlueLogic® control adjustment
  • Capacity (volumetric) - 14 ft3 (0.40 m3 )
  • Filters - (4) MERV 16 Rated
  • Particulate removal efficiency ≥ 95% of 0.3 µm
  • Long life filters, not effected by wet sweeping conditions.
  • Filters cleaned by intermittent air pulse
  • Air compressor - Belt driven, liquid cooled, engine lubricated
  • Compression rate - 13.2 CFM (0.37 m3 /minute) @1200 RPM
  • Shop air connection for air pulse system
  • Dust box deluge washout system

Control System

  • BlueLogic® Control System
    Multiplexed electrical system includes hardware and TYMCO designed software that integrates the in-cab controls to the auxiliary engine and all sweeper functions; as well as provides intelligent safety features and on-board diagnostics (OBD) for the auxiliary engine and sweeper through the BlueLogic display. Specific to DST models, BlueLogic also monitors and automatically controls the adjustments for the DST system, requiring no operator adjustments. • BlueLogic Display
  • BlueLogic Display
    Pedestal mounted touchscreen display provides sweeper and auxiliary engine data and includes hour meters (trip and total) for the auxiliary engine, gutter brooms, pick-up head, blower, water pump, and DST filters; sweeper odometer (records curb miles swept and sweeping hours), service reminders, custom reminders, overspeed warning, low water audible alarm, dust control system winterization guide, and OBD.
  • Interior Components
    BlueLogic display ,auxiliary fuse panel, illuminated control switches: pick-up head, gutter brooms, auxiliary engine RPM, DST mode, purge system, dust control water system nozzles, safety lights.
  • Exterior Components
    Dump switch, BlueLogic Control Modules (BCMs)

Safety/Warning Devices

  • Alternating LED rear flashers (2)
  • Rear view camera system
  • Back-up alarm
  • Hopper safety prop

Optional Equipment

  • Auto Sweep Interrupt
  • Auxiliary hand hose 6 in dia. (15 cm)
  • Camera/monitor systems:
    • Additional camera view - pick-up head
    • CurbView camera system
  • Gutter broom drop-down
  • Hi/Low pressure washdown system
  • Light bar, cab mounted, LED
  • Low emissions package (required for South Coast AQMD Rule 1186)
  • Magnet: front bumper mounted, light duty
  • Pick-up head curtain lifter
  • Shop air purge, dust control system
  • Stainless steel (non-magnetic) options:
    • Hopper:
      -Hopper weldment
      -Dust box
      -Hopper door
      -Skimmer hood assembly
      -Hopper screen assembly
      -Inspection door
      -Suction inlet tube
    • Blower housing
    • Dust box
    • Dust separator
    • Hopper inspection door
    • Hopper screen
    • Hopper screen
    • Auxiliary hand hose hardware
  • Paint color (other than TYMCO standard white)

Special options are available for your individual requirements. Contact your local dealer or TYMCO.

Chassis Available

  • Isuzu NQR

Updated: 06/06/2024