Preventive maintenance is simple on paper and hard to keep up with in real life.
Knoxville fleets run a mix of work: regional runs on I-40, I-75, and I-81, local delivery in city traffic, construction hauling, and yard moves at distribution centers. When every truck is needed every day, pulling one for a shop PM gets pushed back — until something breaks on the side of the road.
Mobile PM brings the maintenance to the yard. Trucks can be serviced between shifts, overnight, or on weekends, with no driver running them to a shop and waiting. Every PM is also a chance to catch worn brakes, leaking seals, cracked belts, and chafed wires early. In the fall, it’s the time to get batteries, coolant, air dryers, and fuel treatment ready before the first hard freeze.
What’s included with our Fleet Preventive Maintenance
- Engine oil and filter changes
- Fuel filter and water separator replacement
- Air filter inspection and replacement
- Chassis lube — kingpins, U-joints, slack adjusters, and fifth wheel
- Coolant condition, freeze protection, and level checks
- Belt and hose inspection
- Brake inspection and adjustment checks
- Tire inspection and pressure checks
- Battery and charging system testing — before winter especially
- Lights and electrical checks
- Air dryer cartridge service
- DEF system checks and DEF filter replacement on schedule
- Fault code scans to catch problems early
- A written PM report for each unit
What mobile PM doesn’t include
- DPF cleaning, which means removing the filter and cleaning it on a machine
- Some major fluid services that need a lift and bulk fluid handling — ask about your units
- Overhead adjustments on some engines, depending on the engine and conditions
- Alignments and tire balancing
Used oil and filters have to be handled and disposed of properly. Ask how waste fluids are handled when you set up service.
Repair it where it sits, or tow it?
PM is scheduled work, so there’s no tow decision. The question is whether a problem found during PM gets fixed on the same visit. Worn brakes, leaking seals, bad belts, and failing batteries can often be replaced right away with your approval.
Anything that needs a shop gets written up with details, so you can schedule the repair when the truck is free instead of when it breaks down.
Have this ready when you call
A few details up front help the mechanic load the right parts and tools and get it done in one trip.
- How many trucks and trailers, and their makes and models
- Engine hours or mileage, and when each unit was last serviced
- Where the vehicles are parked and when they’re available
- Your preferred PM interval, or the manufacturer’s schedule
- Problems drivers have reported
Makes & engines we work on
- Freightliner
- Peterbilt
- Kenworth
- Volvo
- Mack
- International
- Western Star
Class 6 through Class 8 trucks, including engines from Cummins, Detroit Diesel, PACCAR, Volvo, Mack, Navistar, and Caterpillar.
Fleet Preventive Maintenance around Knoxville & East Tennessee
Mobile PM works best at yards where trucks come back regularly. That includes fleet yards and distribution centers around Knoxville, construction and dump fleets in Blount, Loudon, and Sevier counties, manufacturers’ yards in Morristown and Oak Ridge, and owner-operators’ home bases throughout the area.
Highways we cover
Towns we cover
- Knoxville
- Farragut
- Maryville & Alcoa
- Oak Ridge
- Clinton
- Lenoir City & Loudon
- Sevierville & Pigeon Forge
- Morristown
Fleet Preventive Maintenance: common questions
How often should fleet trucks get PM?
Follow the engine and truck manufacturer’s schedule for your duty cycle. Trucks that idle a lot or run stop-and-go routes often need service based on engine hours rather than miles.
Can PM be done overnight or on weekends?
Dispatch is open 24/7. Tell dispatch when your trucks are parked and available, and a schedule can be set around your operation.
What’s in a PM service?
A typical PM includes oil and filters, lubrication, and an inspection of brakes, tires, lights, belts, hoses, and fluids. The checklist can be matched to your fleet.
What should we do to get trucks ready for winter?
Load test batteries, check coolant freeze protection, service air dryers, check block heaters, change fuel filters, and start treating fuel before the first cold snap. Our winter guide has a checklist.
Can PM be combined with a DOT inspection?
Yes. Doing the annual inspection during a scheduled PM saves a second visit. See DOT inspections.
Do you service owner-operator trucks too?
Yes. PM isn’t just for fleets — an owner-operator’s truck can be serviced at home or at a truck stop during a break.