D3K2 Mulcher

Engine Model Cat C4.4 ACERT
Power - Net 104 HP
Displacement 269 in³
Bore 4.13 in
Stroke 5 in
Note Engine meets Tier 4 Final/Stage IV emission standards.
Rated Net Power - 2,200 rpm - ISO 9249/EEC 80/1269 104 HP
Rated Net Power - 2,200 rpm - SAE J1349 104 HP

Drive Pumps 1
Maximum Travel Speed - Forward 5.6 mile/h
Maximum Travel Speed - Reverse 6.2 mile/h
Relief Valve Settings 7033 psi
Track Motors 2

Operating Weight - XL 23746 lb
Operating Weight - LGP 24698 lb

Service Refill Capacities
Cooling System 5.92 gal (US)
Crankcase - With Filter 2.91 gal (US)
Final Drive - Each - LGP 2.6 gal (US)
Final Drive - Each - XL 2.6 gal (US)
Fuel Tank 51.5 gal (US)
Transmission - Hydraulic Tank 15.7 gal (US)

Hydraulic Controls
Pump Output 17.7 gal/min
Relief Valve Settings 2988 psi

Ground Contact Area - LGP 4425 in²
Ground Contact Area - XL 2829 in²
Ground Pressure - LGP 4.2 psi
Ground Pressure - XL 6.2 psi
Length - Track on Ground - LGP 89 in
Length - Track on Ground - XL 89 in
Number of Rollers - Each Side 6
Number of Shoes - Each Side - Sealed and Lubricated Track (SALT) Undercarriage 43
Shoe Width - LGP 25 in
Shoe Width - XL 16 in
Track Gauge - LGP 68 in
Track Gauge - XL 59 in

Retrieval Winch
Control Hydraulic
Drum Capacity - Optional Cable 256 ft
Drum Capacity - Recommended Cable 279 ft
Maximum Line Pull - Bare Drum 32150 lb
Maximum Line Pull - Full Drum 20000 lb
Maximum Line Speed - Bare Drum 50 ft/min
Maximum Line Speed - Full Drum 79 ft/min
Rope Diameter - Optional 0.63 in
Rope Diameter - Recommended 0.5 in
Speed Variable
Weight 1684 lb
Winch Drive Hydraulic

Air Conditioning System
Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.6 kg of refrigerant which has a CO2 equivalent of 2.288 metric tonnes.

FOPS ISO 3449:2005 Level II
ROPS ISO 3471:2008
Sound Levels - ISO 6396:2008 79 dB(A)
Sound Levels - SAE J1166 FEB2008 79 dB(A)

Ground Clearance - LGP 13 in
Ground Clearance - XL 13 in
Length - Basic Tractor - Without Mulcher - LGP 128.9 in
Length - Basic Tractor - Without Mulcher - XL 128.9 in
Overall Length - With Blade - LGP 167.6 in
Overall Length - With Blade - XL 168 in
Track Gauge - LGP 67.9 in
Track Gauge - XL 58.9 in
Tractor Height - LGP 108.8 in
Tractor Height - XL 112 in
Width - Tractor - Standard Shoes - No Mulcher - LGP 92.9 in
Width - Tractor - Standard Shoes - No Mulcher - XL 74.8 in

Service Refill Capacities
Diesel Exhaust Fluid (DEF) Tank 4.9 gal (US)

Specifications - HM518
Drive Method Polychain belt
Drum Speed Range 2150-2450 rpm
Fixed Teeth per Drum 38
Length 53 in
Lift Height 31 in
Maximum Angle - Either Side 25°
Maximum Tilt 14.5 in
Motor Closed loop hydrostatic
Optimum Hydraulic Flow 30 gal/min
Optimum Hydraulic Pressure 5900 psi
Overall Height 58 in
Overall Width 84 in
Weight 3197 lb
Working Width 72 in

Note Specifications shown are for machine equipped with mulcher, cab ROPS, back-up alarm, operator, coolant, lubricants and full fuel tank.

360° Visibility

Easy viewing of the job site operating area PLUS a rearview camera.

Seat Mounted Controls

Mounted on the air suspension seats, these controls isolate the machine vibration from the operator, reducing operator fatigue.

Pressurized Cab

Heated and air conditioned cab offer comfortable working environment resulting in less operator fatigue and improved productivity.

Hinged Radiator Grill

Allows for easy clean out of radiator without the need for tools.

Tractor Platform

Balanced and rugged for operating in rough terrain and soft underfoot conditions.

Long Life Mulching Head

New Cat® HM518 mulcher frame is designed for longer life using cladding material in high wear areas.

Hydraulically Controlled

Mulcher conveniently operates with a hydraulically operated front door and adjustable push bar.

Closed Loop Hydrostatic Circuit

Delivers efficient, high performance power to the mulcher head, using less pump flow.

Reversible Drum

Easier operation and improved productivity.

Drum Speed Bar Indicator

In-cab indicator, aids operator in managing ground speed and overall mulching productivity.


Cat C4.4 ACERT™ diesel engine meets U.S. EPA Tier 4 Final/EU Stage IV emission standards.


Cat Sealed and Lubricated Track with 406 mm (16 in) or 635 mm (25 in) track shoes provides superior flotation and stability for wide range of operating conditions.

Reversing Fan

Auto reversing fan changes air flow direction to purge debris from radiator and enclosures.

Standard Equipment

  • Alternator, 12 volt, 120 Amp, heavy duty brushless
  • Alarm, backup
  • Batteries, heavy duty, maintenance free, 1,500 CCA
  • Diagnostic connector
  • Horn, electric
  • Lights, halogen, 2 front and 2 rear
  • Starter, electric, 12 volt
  • ROPS/FOPS cab
  • Cab, polycarbonate windows and air conditioning
  • Seat, air suspended, cloth
  • Seatbelt, retractable 76 mm (3 in)
  • Foot pads, dash
  • Electronic Monitoring System with:
    – Gauges for engine coolant temperature, hydraulic oil temperature and fuel level
    – Travel speed limiter, electronic
    – Engine RPM and gear display
    – Hour meter, electric
    – Engine air cleaner service indicator, electronic
    – Water-in-fuel indicator, electronic
    – Mulcher drum speed and direction bar
  • Slope Indicate
  • Throttle switch, rotary
  • Controls, seat mounted, fore/aft adjustment
  • Armrests, adjustable
  • Mirror, rearview, inside
  • Single pedal combining deceleration and braking functions
  • Independent forward/reverse speed settings
  • Power port, 12 volt
  • Coat hook
  • Storage compartment
  • Cup holder
  • Floor mat, rubber, heavy duty
  • Hydraulics, 3 valve
  • Load sensing hydraulics
  • Single lever, three function control
  • Hydraulic pump and oil
  • Closed-loop hydrostatic circuit
  • Axial Piston variable displacement pump and motor
  • Cat C4.4 ACERT diesel engine, turbocharged, Tier 4 Final/Stage IV certified with aftertreatment
  • Aftercooler, Air-to-Air (ATAAC)
  • Aluminum bar plate cooling system (radiator, power train)
  • Air cleaner with precleaner, automatic dust ejection and under-hood intake
  • Dual path, closed-loop hydrostatic transmission
  • Electric fuel priming pump
  • Fuel/water separator
  • Reversing fan
  • SALT Undercarriage
  • 6 roller track frame
  • Track rollers, lifetime lubricated
  • Carrier rollers
  • Track adjusters, hydraulic
  • Guards, front/rear guiding
  • Master link
  • Cat Product Link™ PL641 Cellular
  • C-Frame, VPAT, hydraulic cylinders and lines
  • Lockable engine enclosures
  • Front pull device
  • Ecology drains (engine, power train and implement oil and engine coolant)
  • Scheduled oil sampling ports (engine, power train implement oil)
  • Vandalism protection
  • Hinged radiator grill
  • Rearview camera
  • Extended life coolant, –37° C (–35° F)
  • Guard, track guiding, center
  • Screen, rear, cab
  • Screen, side, cab
  • Sweeps, front
  • Sweeps, rear
  • Heavy duty crankcase guard

Optional Equipment

  • Radio, AM/FM, Bluetooth
  • Guard, track guiding, center
  • Screen, rear, cab
  • Screen, side, cab
  • Sweeps, front
  • Sweeps, rear
  • VPAT XL blade
  • VPAT LGP blade
  • VPAT Intermediate blade
  • Counterweight, rear
  • Winch, retrieval
  • Heater, engine, coolant, 120 volt
  • Starting aid, ether
  • Extended life coolant, –50° C (–58° F)
  • Winch, retrieval

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