The only people who like maintenance are those who are paid to do it. At a cost of about a dollar a minute, maintenance is an expensive proposition. But smart operators can spec some of that cost out of the truck before it even rolls down the assembly line. The cost reduction strategy begins with establishing a purchase/lease schedule that aligns with the fleet’s financial goals and continues with ordering components that will help reduce the time trucks spend in the shop.
There’s little benefit in spec’ing a bulletproof truck if you plan to keep it only four or five years. If you can keep a truck running for 500,000 miles without any significant maintenance or replacement cost, you’ll come out money ahead. But that doesn’t mean you can simply ignore the truck for five years.
Preventive maintenance schedules were once based largely on oil change intervals. Not long ago, the average interval was 10,000-15,000 miles, or about once a month. With some of today’s engines capable of going 40,000-50,000 and even out to 70,000 miles between oil drains, PM intervals can be safely extended only if the rest of the truck can be left alone that long – and that’s not often the case.
The long and the short of it
You need to look at maintenance from the long and short view. Long-term considerations involve spec’ing components that can be expected to last the anticipated first life of the truck. The short view demands that you regularly inspect the consumables, top-off fluid reservoirs and check for progressive wear, such as with tires and components likely to corrode.
Disc brakes are a good example of the long-view spec’ing decision. The full life-cycle cost of discs compared to drums is about the same. You pay more up front for discs, but you’ll spend more maintaining drum brakes over time. “Looking purely at the numbers, the two almost neutral themselves out,” says Valparaiso, Indiana-based Greg Hart, principal of Hart Consulting. “Discs are far more reliable than drums and there are way fewer parts to worry about. They’ll also keep you out of trouble during roadside inspections. So, are disc brakes a smart spec’ing decision in the right application? Hell, yes!”
Be warned, though, that while disc brakes are nearly maintenance-free, they do require regular inspections. And there’s a risk to ignoring them. Should you try to avoid the inevitable mid-life pad changes – a quick and cheap PM item – you run a high risk of destroying a $3,000 rotor, which more than negates the savings.
Hart’s spec’ing philosophy is to look at the trucks’ historically most expensive time frame, years three and four. “If you look at years three and four, years one and two will take care of themselves,” he says. “Experience has taught me that spending a little extra money up front always pays off in the end.”
Take alternators, for example. The upcharge for a high-efficiency, high-output alternator when ordering new might be a couple of hundred dollars more than the standard spec, but it will more than pay for itself in fewer battery problems, fewer no-starts and even in fuel efficiency.
“In certain applications, a high-efficiency alternator can save $100 a year in fuel alone,” says Joe Puff, vice president of truck technology and maintenance at NationaLease. “If that alternator has kept the batteries charged, you might not need to replace them in the third year, and you may have eliminated or reduced the non-start problems. When you factor that in, the more expensive alternator starts to look like a real bargain.”
Hart says vertical integration has limited spec’ing choices in many instances, but it hasn’t eliminated them. “You will have to pay more for a premium item, but upgrading the major electrical components – batteries, cables, alternators, starters and the like – is always money well spent.”
Straying from standard
Fleets like to stick with what they know and have become familiar with, but occasionally those components are dropped from the data books or they become custom-order items. Bruce Stockton, principal of Stockton Solutions, Joplin, Missouri-based transportation fleet consultants, says fleets should trust the OE when it comes to spec’ing certain components, unless you have data or experience that suggests otherwise.
“Your current fleet will have its share of problems, so draw on that experience in spec’ing the new trucks,” says Stockton. “Ask what the OE has done about the problem you’re having and whether it’s been resolved in the new generation of trucks.”
The other danger in straying from the standard spec is availability of parts. Standard parts are generally well-stocked; rarer items might not be. That can lead to downtime while waiting for inventory, warns Hart.
Stockton says on the whole, trucks are pretty well made these days, and stuff that we once worried about is no longer an issue – drivelines, transmissions and axles, for example. Most of the problems are going to come from engines and aftertreatment systems and their associated electronics and sensors. “You can’t delete those from the spec, so you need to learn everything you can about them to minimize the problems.”
One possible solution is adding an auxiliary HVAC system to sleeper trucks. This will lower idle time and reduce soot buildup in the DPF, says Chris Marks, director of maintenance at Ryder.
“You need to pay special attention to things that affect the exhaust aftertreatment system, like fuel economy, speed, loads and duty cycles,” he says. “If you get it wrong, not only does it affect the vehicle’s reliability, it can really drive up maintenance costs. When ordering add-ons like auxiliary power units or power take-offs, we always have it done at the factory to avoid installation issues with third parties and the problems they can lead to later in the vehicle’s life.”
One of the big things that has changed with trucks in general today is that there is no longer any such thing as a general-purpose truck. You’ll pay a big price over time if you try to run an over-the-road truck in a P&D operation or vice versa. Today’s spec has to be duty-cycle dependent, factoring in annual miles, application and everything else, says Marks.
“If you get the spec wrong from the start, the cost will be substantial,” he says. “And it’s very expensive to try to fix it after the fact. You have to get it right from the start, or the maintenance budget will be eaten up.”
So, when considering the cost of spec’ing possibly premium components or long-life or maintenance free, keep in mind that maintenance costs today are at a dollar a minute in a well-run shop. That should be good incentive to think twice about scrimping on your spec.