Tires and Articulation Joints Key ADT Maintenance

Two of the hardest working parts of articulated dump trucks (ADTs) are the tires and the articulation joint. Both see their own unique stresses.

We got the lowdown on tire and joint maintenance from several ADT OEMs. Some even bake preventive maintenance into their ADT joint designs.

Maintaining ADT tires

“Tires are one of the highest operating costs on an ADT, so managing them properly has a direct impact on your bottom line,” said Lauren Meyer, ADT product marketing manager for John Deere.

“Before we even get to maintenance, it’s important to discuss the right tire choice because that affects how quickly they wear down or how easily they get damaged,” said Volvo Construction Equipment’s Tyler Smith, articulated hauler product manager.

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“For most applications, this means deciding between E3 and E4 tires. E3 tires are generally best for earthmoving work where cycles are longer, and travel speed can be a little higher,” Smith said.

“E4 tires are better for quarry and mining work because they have thicker side walls that are harder to damage. Another decision is whether to use standard tires or move to wider metric tires, which provide more flotation in poor ground conditions.”

From E3 to big three

“The three most important aspects of ADT tire maintenance include inflation, daily inspections, and payload management,” according to Develon product manager Jay Patel.

“Truck owners should maintain proper tire pressures based on the environment [cold versus warm] and haul road conditions. Under-inflated tires can decrease fuel economy and lead to higher operating costs,” Patel said.

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“Operators should perform daily checks for cuts, debris, and uneven tire wear. It’s recommended to avoid overloading the truck, which can cause excessive tire stress. The Develon tandem bogey design and equal weight distribution help ensure even tire wear across all six tires.”

Some ADT manufacturers help tackle weight management and tire conditions through onboard weighing systems and tire pressure monitoring systems, so look for those helpful systems when considering your ADT buy.

Managers should specific attention to those haul roads, as well.

“Haul road condition and speed management play a major role in maximizing tire life and reducing operating costs,” said Caterpillar market professional Scott Thomas.

He also tied articulation joint condition to haul roads.

Articulation joints

“Regular inspection, proper lubrication, proper adjustment at the required service intervals stated in the operation and maintenance manual and keeping joints clean are key,” Thomas said.

“Well designed haul roads that minimize shock loading also help extend joint life.”

Volvo’s Smith points to articulation joint design itself.

“Within the articulation joint on Volvo ADTs, we have a truly maintenance-free rotating hitch, and we redesigned this area so that the hoses are kept upright for added protection,” Smith said.

“Develon ADTs feature a standard auto-lube system, but it is vital to use the specific special four-ball grease recommended by Develon rather than generic grease to prevent premature failure,” Patel said.