TYMCO Sweepers
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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

Features


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.

Hopper

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.

Truck Types


Isuzu NQR

Options


Camera/Monitor System

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.

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.

Dual Steering

Allows the Sweeper to be driven and operated from the right side (or passenger side) as well as the left side for easier and more efficient sweeping of the right hand gutter area.

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®


Tier 4 Interim Auxiliary Engine/Cabover Chassis

Specs

Sweeper Auxiliary Engine

  • Engine - Kubota V2403-M-T, 4 cyl. (Tier 4i)
  • Displacement - 148.5 in3 (2.4 L)
  • Power - 56 hp (41.7 kW) @ 2600 RPM
  • Air cleaner - Heavy duty, w/pre-cleaner
  • Oil filter - Spin on, full flow
  • Cooling - Liquid
  • Diesel fuel supplied from chassis fuel tank
  • Fuel tank capacity - 30 gal (113 L)
  • Auxiliary engine shutdown system
  • Fuel/water separator

Blower, Rubber Lined

  • Aluminum alloy, high volume, open face turbine
  • Purpose - Creates air blast and suction
  • Bearings - Anti-friction
  • Housing - 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 (508 x 1549 mm)
  • Location - Adjacent to hopper
  • Particulate removal achieved through 22.5 in (572 mm) skimmer slot into skimmer hood
  • Inspection/cleanout port w/extended plug handle

Hopper

  • Capacity (volumetric) - 4.0 yd3 (3.06 m3)
  • Capacity (useable) - 3.1 yd3 (2.37 m3)
  • Construction - Welded steel plate
  • Dump door - 74 x 81.25 in (1880 x 2064 mm)
  • Dumping method - Hydraulic with tilt up
  • Dumping height - 72 in (1829 mm)
  • Dump clearance height - 154 in (3912 mm)
  • 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
  • Function - Delivers air blast and suction
  • Width (inside dimension) - 78 in (1981 mm)
  • 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 (305 mm)
  • Pressure hose diameter - 12 in (305 mm)
  • Reverse pick-up head system

Hydraulic System

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

Gutter Brooms, Twin, Patented

  • Standard equipment includes floodlight and parabolic mirror
  • Drive - Constant speed non-reversible hydraulic motor
  • Adjustment - Adjustable for down pressure, pattern and wear
  • Down pressure - Automatically adjusts to requirement
  • Flexibility - All directions, Integral anti-damage "swing away" relief valve
  • Broom - Steel wire vertical digger 36 in (914 mm)
  • Variable speed control
  • Hydraulic tilt - Twin gutter brooms adjust for curb depth

Dust Control System

  • Water spray nozzles for dust suppression
  • Pump - Electric diaphragm
  • Reservoir - Polyethylene, 75 gal (283.9 L)
  • Filter - 80 mesh in-line
  • Low water shut-off - Safety shut-off with low water warning light in cab
  • Spray nozzles - At gutter brooms and inside hopper
  • Fire hydrant and garden hose connections
  • Air purge system
  • 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
  • Dust box deluge washout system

Controls

  • Inside cab (lighted)
    Pick-up head, gutter broom(s), ignition and tachometer (auxiliary engine), voltmeter, low water warning system (for dust control system), all safety lights, hour meter
  • Outside cab - Dump
  • Alternating LED rear flashers (2)
  • Back-up alarm
  • Hopper safety prop

Optional Equipment

  • Auto Sweep Interrupt
  • Auxiliary fuse panel
  • Auxiliary hand hose 6 in dia. (152 mm)
  • Cabover dual steering
  • Camera/monitor system
  • Gutter broom tilt adjuster(s) (right, left, or dual)
  • Gutter broom drop-down
  • Hi/Low pressure washdown system
  • Light bar, cab mounted, LED
  • Low emissions package (required for South Coast AQMD Rule 1186, not applicable with high output water system)
  • Magnet, front bumper mounted, light duty
  • Pick-up head curtain lifter
  • Stainless steel 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 screen
    • Inspection door
    • 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: 08/21/2017