Joy (former MTI), DT-3504, Haulage Truck


Joy DT-3504

  • Rated load capacity of 31,751 kg (70,000 lbs.)
  • Designed for ground-level maintenance with no climbing
  • Collet-style pins for lower wear and reduced maintenance
  • EPA and MSHA approved engines, with particulate filtering option
  • Automated lubrication system (optional)

Contact Account Manager

The DT-3504 truck has a rated load capacity of 31,751 kg (70,000 lbs.). The load-sensing variable displacement hydraulics reduce heat and fuel costs, while improving the life of the hydraulic components. In addition, the optional automated lubrication system keeps the DT-3504 working longer, harder, and more productively.

The DT-3504 truck, like all Joy trucks, is designed specifically for ease of use and maintenance, with simple operation gauges and a rugged long-life structure, providing the lowest possible total costs of operation including low capital costs.

Designed for safe operation and maintenance

The DT-3504 includes multiple features that are designed to maximize safety for both the operator and the maintenance staff:

  • ROPS/FOPS canopies and cabins provide protection from falling rock or rollovers
  • Fail-safe braking system features a spring-applied braking system that activates when low hydraulic oil pressure or electrical failures are detected
  • Operation interlocks prevent accidental machine activation
  • Three-point mounting and anti-slip steps minimize slips and falls
  • Hot component isolation to prevent burns

Designed for reliability

The DT-3504 has been designed for reliability and long component life, including the following features:

  • Rugged steel frame
  • Choice of engines from Mercedes and Cummins that are EPA and MSHA certified and feature clean emissions and class-leading fuel consumption
  • MIL (military specification) components that meet international standards
  • Heavy-duty all-mechanical powertrain featuring Dana components for a rugged platform and long service life; the powertrain, combined with load-sensing hydraulics, mean excellent maneuverability, faster ramp speeds, and a more comfortable ride
  • Hydraulic systems with piston pumps
  • Severe-duty electrical system
  • Collet-style pins for lower wear and reduced maintenance

Designed for ease of maintenance

The DT-3504 includes several key features that reduce maintenance times and costs, including:

  • Ground-level maintenance design to eliminate climbing
  • Centralized lubrication system
  • Simple electrical design

Designed for productivity

The DT-3504 has been designed to provide the highest possible productivity in its class:

  • Combines power and efficiency to provide fast tramming speeds and cycle times, with impressive breakout power
  • Powertrain, combined with load-sensing hydraulics, means excellent maneuverability, faster ramp speeds, and a more comfortable ride for your operators
  • Easy-to-use controls are simple to train and simple to operate
  • Rugged structures and heavy-duty components increase equipment uptime

Designed for customization

The DT-3504 has many upgrades available, including:

  • FOPS/ROPS certified canopy
  • FOPS/ROPS certified enclosed operator’s cab with air conditioning and/or heat
  • Automated lubrication system
  • Fire suppression system
  • Reverse camera


Standard payload 31,751 kg 70,000 lbs.
Standard box 17.4 m3 22.7 yd3

Overall dimensions

Width without dump box 2,988 mm 9 ft. 10 in.
Maximum width 3,023 mm 9 ft. 11 in.
Total length 10,271 mm 33 ft. 8 in.
Length with dump box lowered 10,907 mm 35 ft. 9.4375 in.
Height at protective canopy* 2,581 mm 8 ft. 6 in.
Height at dump box* 2,438 mm 8 ft. 0 in.
Dump height* 5,278 mm 17 ft. 3.8125 in.
Ground clearance* 325 mm 1 ft. 0.8125 in.
Dump angle 70 degrees
Approach angle 18%
* Vehicle height and ground clearance will vary with tire manufacturer, tire pressure, and load. With the vehicle loaded, expect tires to compress up to 76 mm (3 in.).