Paving
Equipment fleet maintenance program field guide for paving contractors
How to keep the trucks, pavers, rollers, and loaders running on a schedule so a breakdown does not idle the crew, blow the paving window, or eat the margin you bid.
Direct answer
A fleet maintenance program is the scheduled servicing, inspections, and per-asset records that keep a contractor's trucks, pavers, rollers, and loaders running so a breakdown does not idle the crew. Service by hour meter and mileage on the OEM interval, run a daily walkaround, and keep a service history per machine.
Key takeaways
- Service heavy equipment on the OEM interval by running hours, typically at 250, 500, 1,000, and 2,000 hours, never by waiting for failure.
- Hard, dusty, or high-load service shortens the recommended interval by 20 to 30 percent; when in doubt, service earlier, never later.
- A DVIR (driver vehicle inspection report) is required under 49 CFR 396.11 when a defect is found; carriers retain it at least 3 months.
- Commercial trucks need a periodic inspection at least every 12 months under 49 CFR 396.17; documentation is kept for 14 months.
- Owning and operating cost equals fixed owning cost plus variable operating cost divided by hours worked; fuel often runs 30 to 50 percent of operating cost.
What a fleet maintenance program is, and why downtime is the enemy
A fleet maintenance program is the scheduled servicing, the daily inspections, and the per-machine records that keep a contractor's own trucks and heavy iron running. It covers the haul trucks, the pavers, the rollers, the loaders and skid steers, the milling machines, and the small stuff like plate compactors and saws. The whole point is that the equipment is ready when the crew shows up, because a machine that will not start does not just lose its own day. It loses everybody standing around it.
Downtime is the enemy because a paving crew runs as a chain. The plant loads the trucks, the trucks feed the paver, the paver lays the mat, the rollers compact it behind. Take one link out and the rest stop. If the paver throws a hydraulic line at 9 a.m., the loaded trucks back up, the mix cools and gets rejected, the rollers sit, and a six- or eight-person crew plus the iron they run all bill against a job that produced nothing that hour. The machine is a large capital cost on its own, often six or seven figures across a fleet, but the bigger number is the idled crew and the missed paving window behind the broken one.
This guide is about keeping that from happening through scheduled work and records, not heroics. The estimate that priced the job assumed a production rate and an equipment cost per hour, and a sibling guide walks through that paving estimating and takeoff. The plant feeds the trucks on a schedule, covered in the asphalt plant production guide. A maintenance program is what makes both of those numbers real, because neither the bid nor the haul cycle survives a machine that is down.
Why the program pays: downtime, repair cost, resale, safety, and DOT
Preventive maintenance is cheaper than the breakdown. That is the whole argument, and it holds up five different ways.
Downtime is the first and biggest. A planned oil change is an hour in the yard on a Saturday. A spun bearing because the oil never got changed is the machine on a lowboy to the dealer, a week of rental to cover it, and the crew sitting or scrambling. The repair is the second. A water pump replaced on schedule is a part and an hour. The same pump that lets go on the job takes the head gasket and sometimes the engine with it. You pay ten times for the same failure when you wait for it.
Resale is the third, and people forget it until trade-in day. A machine with a clean, documented service history brings real money over one with a shoebox of receipts, because the buyer or the dealer is paying for proof it was cared for. Safety is the fourth. A neglected brake, a worn tire, a frayed hydraulic line under pressure, these hurt people, and a single serious injury costs more than a decade of PM. DOT compliance is the fifth. For the on-road trucks, the federal inspection and reporting rules are not optional, and a roadside out-of-service order parks the truck and the load it was carrying. None of these is the headline by itself. Stacked together, they are why the PM gets done on time instead of when there is a free afternoon.
How often should you service heavy equipment?
Service heavy equipment on the OEM interval by hours, not when it breaks. Most manufacturers, including Caterpillar, Komatsu, Volvo, Deere, and Hitachi, build their schedules around running hours and lay out service at 250, 500, 1,000, and 2,000 hours. The 250-hour service is typically the engine oil and filter plus a greasing and a look at the basics. The longer intervals add hydraulic and final-drive fluids, fuel filters, coolant service, valve checks, and the bigger inspections. The exact list and the exact hour numbers belong to the machine's manual, so the OEM schedule controls, not a number off a forum.
On-road trucks run on mileage and time the same way, with the engine oil, filters, and chassis lube on the manufacturer's mile interval. The principle is identical: a fixed trigger you can plan around, set by the maker of the equipment.
The interval shortens in hard service. Heat above about 40 degrees C, heavy dust, and constant high load can pull the recommended interval in by 20 to 30 percent, and a quarry or a dusty mill job can take a 1,000-hour air filter down to 500 before the engine starts dusting and wearing rings. When in doubt, service earlier, never later. Skipping the interval to keep a machine on the job one more day is how you turn a planned hour into an unplanned week.
| Interval (typical) | What it usually covers | Controls |
|---|---|---|
| Daily / 10 hr | Walkaround, fluid levels, greasing, leaks | Operator and OEM checklist |
| 250 hr | Engine oil and filter, grease, basic inspection | OEM manual |
| 500 hr | Fuel filters, undercarriage, deeper inspection | OEM manual |
| 1,000 hr | Hydraulic fluid and filters, coolant service | OEM manual |
| 2,000 hr | Major service, final drives, valve adjustment | OEM manual |
Tracking hours and miles to trigger the service
The schedule is only as good as the meter reading behind it. Every machine has an hour meter and every truck has an odometer, and the PM interval triggers off that number. Miss the reading and the interval slides, the oil runs 400 hours instead of 250, and the wear you cannot see is already happening inside the engine.
The old way is a clipboard in the cab and a guy who is supposed to write the hours down on Friday. It works until it does not, which is the first busy week. The reading gets guessed, then estimated, then forgotten, and by the time anyone checks, three machines are overdue and one is already making metal.
A field tool fixes the weak link by capturing the hour meter where the work happens. The operator logs the reading off the machine during the daily check, the system knows the interval, and it flags the unit as service due before it goes past, not after. The reading rides with the asset instead of living on a clipboard that ends up under a seat. The same reading then feeds the cost-per-hour math later, so logging it once does two jobs. Track the hours like you track the fuel, because the hours are what tell you when to spend the maintenance dollar.
The daily walkaround and pre-trip inspection
The daily walkaround is the cheapest insurance on the fleet, and it is the first thing that gets skipped when the crew is late. Before the machine moves, the operator walks it: fluid levels at the dipstick and the sight glasses, tires for pressure and cuts and chunking, tracks and undercarriage for tension and packing, the ground under the machine for fresh leaks, lights and backup alarm and horn, the cutting edges and ground-engaging tools for wear, and anything loose, cracked, or hanging.
The point is to catch it cold, in the yard, before it strands the machine on the job. A puddle under the loader at 6 a.m. is a five-minute look at a fitting. The same leak found when the hydraulics go soft mid-load is a recovery off the job and a crew waiting on it. A low tire caught in the yard is a fill. The same tire run flat to the site is a roadside change or a ruined casing.
Pre-trip on the on-road trucks is the same idea with a federal list of categories behind it: brakes, steering, lights, tires, mirrors, wipers, coupling, wheels and rims, horn, and emergency equipment. The driver confirms the truck is safe before it rolls. Two minutes of looking beats a breakdown on the interstate with a loaded trailer every single time.
What is a DVIR, and what does DOT require?
A DVIR is a Driver Vehicle Inspection Report, the record a commercial driver makes of a truck's condition, required under the federal motor carrier rules. The post-trip DVIR lives in 49 CFR 396.11, and for property-carrying trucks the driver is required to prepare a written report only when the inspection turns up a defect or deficiency, a point that changed in 2014. The pre-trip safety check sits separately under 392.7. The federal categories the inspection covers include the service and parking brakes, steering, lighting and reflectors, tires, the horn, wipers, mirrors, coupling devices, wheels and rims, and emergency equipment.
The DVIR builds a chain of accountability. The driver reports the defect, the carrier repairs it and certifies the repair, and the next driver confirms the fix before the truck is dispatched. A carrier is not allowed to send out a truck with a defect that affects safe operation until it is fixed and certified, and the penalty for getting that wrong runs into five figures per occurrence plus the risk of an out-of-service order. Carriers retain the reports for at least three months.
On top of the daily reporting, every commercial motor vehicle gets a periodic inspection at least once every 12 months under 49 CFR 396.17, against the standards in Appendix A. The documentation has to be on the vehicle and the carrier keeps it for 14 months. These are federal minimums and they apply to the on-road fleet; the exact applicability depends on vehicle weight, use, and whether you cross state lines, so confirm what governs your trucks with the FMCSA rules and your state. The off-road iron is not under DOT, but the daily walkaround discipline carries over.
Operator defect reporting: fix it before it grows
Most failures send up a flare before they happen, and the operator is the one who sees it. A new noise, a soft pedal, a gauge reading off, a hot smell, a hydraulic function that got slow. The operator who runs that machine eight hours a day knows its normal better than anyone. The problem is getting what they notice off the machine and in front of the person who can fix it, before the next operator climbs on and it gets lost.
When defect reporting depends on someone remembering to mention it at the end of a long day, it does not happen. The note gets made in the cab, or made to nobody, and the small thing grows into the breakdown. A worn hydraulic hose reported Tuesday is replaced in the yard. The same hose nobody flagged blows on Thursday and takes the hydraulic pump with it.
A field tool closes that loop. The operator logs a defect against the specific machine from their phone, adds a photo of the leak or the worn part, and the report lands with the mechanic and the equipment manager the same minute, tied to that asset's record. Nothing waits for a Friday handoff. The defect is on the books, it is assigned, and when it gets fixed the repair joins the machine's history. The flare gets seen while it is still small.
Per-asset service history: each machine its own file
Every machine needs its own service history, and it is the part most fleets do worst. The history is the running record of what was done, when, at how many hours, with what parts, by whom, and what is due next. Without it you are guessing whether the hydraulic fluid in that excavator was changed last fall or two falls ago, and a guess is how a 2,000-hour service slips to 3,000.
The shoebox of receipts is not a service history. Neither is a memory, a text thread, or a spreadsheet that one person keeps and nobody else can find. When that person is out and a machine goes down, the crew is rebuilding the history from invoices while the job waits.
A field tool gives each asset a file that travels with it. In FieldOS every service, every defect, every inspection, and every part logs against the specific unit, so the excavator's whole life is in one place: hours at last service, what is overdue, the photo of the last repair, the cost rolled up over its life. The equipment manager opens the machine and sees its status instead of reconstructing it. At resale that same file is the proof of care that brings the higher number, and it is already built. Per-asset records are the spine of the program, because the schedule, the cost, and the resale value all read from them.
Stocking PM parts and fluids so the service does not wait
The fastest way to blow a planned service is to start it and find you do not have the filter. Now the machine is half apart in the yard, the parts counter is closed, and a one-hour job is a two-day job. Stock the routine PM parts and fluids ahead so the service happens on schedule instead of waiting on a delivery.
Carry the consumables you burn on the interval: engine oil and the oil filters for each machine class, fuel filters and water separators, air filters, hydraulic filters, common belts and hoses, grease, coolant, and the hydraulic and gear oils your fleet runs. Know which filter crosses to which machine, because a mixed fleet has a dozen part numbers and the wrong one on the shelf is the same as no part. Keep enough for the next round of services plus a cushion, not a warehouse.
The stock is a small carrying cost against a large downtime cost. A few hundred dollars of filters on a shelf is nothing next to a machine waiting two days for one. The trick is knowing what to keep, and that comes straight out of the service schedule. If you know what is due in the next month, you know what to have on hand, which is one more reason the schedule and the records earn their keep.
What is owning and operating cost per hour?
Owning and operating cost is what a machine costs you for every hour it runs, split into the cost of owning it and the cost of running it. You need this number to bid the work and to charge for the equipment, and a fleet that does not know it is guessing on both. The method goes back to the equipment cost handbooks, and Caterpillar's Performance Handbook is the common reference for it.
Owning cost is the fixed side and it runs whether the machine works or sits: depreciation as it loses value, financing or interest on what you borrowed to buy it, insurance, taxes, and storage. Heavy equipment can shed 20 to 40 percent of its value in the first year, and most machines depreciate over five to seven years, so depreciation is usually the biggest single owning number. Operating cost is the variable side and it tracks the hours: fuel, which often runs 30 to 50 percent of operating cost, plus maintenance and repairs, ground-engaging tools and other wear parts, tires or tracks, and the operator if you fold labor in.
Add both sides and divide by the hours the machine actually works. The hours are the catch: a machine that runs 1,200 hours a year carries its fixed cost over more hours than one that runs 600, so the idle machine's cost per hour is higher even though it did less. This is the number that feeds the estimate, and the paving estimating and takeoff guide prices the job against it. Get the cost per hour wrong and the bid is wrong before you measure a single square yard.
| Cost side | What it includes | Behavior |
|---|---|---|
| Owning (fixed) | Depreciation, interest, insurance, taxes, storage | Runs whether the machine works or sits |
| Operating (variable) | Fuel, maintenance, repairs, wear parts, tires/tracks | Tracks with the hours run |
| Per hour | (Owning + Operating) divided by hours worked | Falls as utilization rises |
Repair or replace? Reading the curve
Every machine reaches a point where keeping it costs more than replacing it, and the maintenance records are how you see that point coming instead of being surprised by it. The decision turns on three things: the rising repair cost, the downtime the machine is causing, and what it is still worth on resale.
Repair cost climbs with age, and the tell is the trend, not any single bill. One big repair on an otherwise sound machine is just a repair. A pattern of climbing repair cost, more frequent failures, and a machine that is down more than it works is the curve turning up. When the annual repair and downtime cost starts to rival a payment on a replacement, the old machine is making the decision for you.
Downtime weights the call heavily in paving, because the cost is not just the repair, it is the crew the breakdown idles and the paving days it costs you. A machine that is cheap to own but unreliable in the middle of the season is more expensive than its repair bills look. Resale is the third leg: a machine sold while it still runs and still has a documented history brings money that a worn-out one does not, so the time to sell is usually before the curve goes vertical, not after. The records make all three legs visible. Without them, repair-or-replace is a gut call, and the gut usually says keep it one more year right up until it strands the crew.
Telematics and GPS on the fleet
Telematics is the data the machine and the truck report on their own: hours, location, fault codes, fuel burn, idle time, and often the diagnostic detail behind a warning light. Most newer iron ships with it and most fleets underuse it. The value is that it removes the human from the data collection, which is exactly where the clipboard fails.
The hours are the first win. Telematics reports the hour meter automatically, so the PM trigger does not wait on someone writing it down. Fault codes are the second: the machine tells you it threw a code, sometimes before the operator notices anything, which turns a surprise failure into a scheduled look. Location protects against theft and tells you the machine is where the job is. Idle time is money, because an engine idling burns fuel and racks up hours toward the next service while producing nothing.
The catch with telematics is that the data is useless sitting in a separate dealer portal nobody opens. Each brand has its own, and a mixed fleet ends up with three or four logins and no single picture. The fix is to pull the readings that matter, the hours and the faults, into the same place the rest of the program lives, so the service triggers and the defect reports work off one record instead of a stack of portals.
Fuel and idle management
Fuel is the largest operating cost on most machines, often 30 to 50 percent of it, so the fuel line on the cost sheet is worth watching and the idle behind it is worth cutting. An engine at idle burns fuel, adds hours toward the next service, and produces nothing, and a paving fleet idles a lot: trucks waiting on the plant, the paver paused between trucks, machines left running through a break.
The two levers are idle discipline and tracking. Shut the machine down when it will sit more than a few minutes, within reason for the engine and the conditions. Track fuel per machine so you can see the outlier, because the unit burning well more than its sisters is telling you something, a clogging filter, a dragging brake, an operator who lets it idle all day, or a leak. Idle hours from telematics make the waste visible. You cannot manage the burn you do not measure.
Tires, tracks, cutting edges, and wear parts
Wear parts are the items the machine consumes by design, and the program manages them so they get replaced on a plan instead of failing at the worst moment. Tires on the trucks and rubber-tired machines, tracks and undercarriage on the dozers and excavators, and the ground-engaging tools, the cutting edges, bucket teeth, and grader blades, all wear at a rate you can track and predict.
Tires get checked for pressure, cuts, and uneven wear in the walkaround, because an underinflated tire wears fast and a run-flat ruins the casing. Undercarriage is one of the largest lifetime costs on a tracked machine, so track tension and pin and bushing wear get watched on the interval, since a thrown track on the job is a long recovery. Cutting edges and teeth get turned or replaced before they wear into the base metal, because running them past worn makes the machine work harder, burns more fuel, and starts cutting into the part behind the wear part. Watch the wear, plan the swap, and you never lose a day to an edge that finally gave up mid-shift.
Seasonal service and winterizing the off-season iron
Paving is seasonal in most of the country, which means a block of equipment sits through the winter, and how it gets put away decides what shape it is in come spring. Equipment that just gets parked in November comes back with dead batteries, gummed fuel, seized fittings, and rodent damage. Equipment that gets winterized starts on the first crank.
Before the off-season, service the fluids so the machine sits on clean oil rather than acid-laden used oil, treat or stabilize the fuel and keep tanks full to cut condensation, check and charge or pull the batteries, grease everything to push moisture out of the fittings, and store it covered and off bare ground where you can. A spring startup service brings the machine back up before its first job, not on it. The mistake is treating the storage months as free. The damage that happens to a parked machine is real, it is just quiet, and it shows up as a no-start the morning the season opens and the schedule is already tight.
Operator care: abuse shortens the life
The operator has more effect on a machine's life than the maintenance schedule does, for better or worse. A careful operator warms the machine before loading it, watches the gauges, eases off when something feels wrong, and does the walkaround like it matters. An abusive operator runs it cold and hard, ignores the warning light, slams the tracks against the curb, and runs the bucket into rock until something breaks.
The cost difference between the two is enormous and it does not show up on the maintenance line, it shows up as a transmission at 6,000 hours that should have gone 12,000. Training pays here. New operators should learn the warmup and cooldown, the gauge readings that mean stop, the daily checks, and the limits of the machine. Hold operators to the walkaround and the defect report and they become the eyes of the program instead of the source of the surprise failure. The machine that gets cared for by the person on it every day outlasts the identical machine that does not, by years.
Warranty and OEM-required maintenance
Warranty coverage usually comes with a string attached: do the manufacturer's required maintenance, on the interval, and prove it. Skip the documented PM and the manufacturer can deny a warranty claim, leaving you to eat a repair that should have been covered. The service history is what proves you held up your end, which is one more reason to keep it per asset.
Track the warranty terms and expiration on each machine alongside its service record, so a failure that happens under coverage actually gets claimed instead of paid out of pocket, and so the required services get done in time to keep the coverage alive. Extended warranties and powertrain coverage on newer iron are worth real money on a major failure, but only if the paperwork holds. Keep the receipts and the hour readings tied to the machine, because the dealer will ask for both.
Scheduling the PM in the down time, not mid-job
When the PM gets done matters almost as much as that it gets done. The service belongs in the down time, the rain day, the weekend, the gap between jobs, the off-season. The failure is doing it mid-job, or worse, having the skipped service turn into a breakdown mid-job. A planned service on a Saturday costs an hour nobody was using. The same service skipped until the machine fails on Tuesday costs the day and the crew.
The way to make that happen is to look ahead. If the records show three machines coming due in the next two weeks, you schedule those services into the next rain day or the next light stretch instead of being forced into them when a machine quits at the worst time. This is where the program either works or falls apart. A fleet that knows what is due plans the service around the work. A fleet that does not gets ambushed by it, every time, in the middle of the paving window. Do the PM when the machine is not needed, so it is ready when it is.
Tracking the fleet in a system, not a clipboard
A fleet maintenance program lives or dies on whether the information is in one place the whole crew can reach. The clipboard in the cab, the spreadsheet on one person's laptop, the dealer portals, the text threads, the shoebox of receipts, these are how the program falls apart, because no one can see the whole picture and the readings go stale the first busy week. A maintenance management system, what larger operations call a CMMS, puts the schedule, the history, and the cost in one record.
The system has to do four things: show what PM is due across the fleet so nothing slides, hold each machine's full service history so the records survive turnover, capture defects from the operator the moment they see them, and roll up the cost per machine so you know what each one is really costing. A clipboard does none of that, and a spreadsheet does two of them badly.
FieldOS is built for the field side of this. The operator logs hours and defects from their phone, the system flags service due before it goes past, each asset carries its own history and cost, and the equipment manager sees the whole fleet's status in one place instead of chasing four sources. The same record that schedules the service produces the resale history and feeds the cost-per-hour math, so the data gets entered once and works everywhere. The goal is simple: the next person who needs to know the machine's status can find it without calling anyone.
The metrics that tell you the program is working
A maintenance program needs a few numbers to prove it is working, because effort is not the same as result. Three carry most of the weight: uptime, cost per hour, and PM compliance.
Uptime, or availability, is the share of the time a machine was ready to work when it was needed. It is the number the crew feels directly, because low availability is the breakdown that idled them. Cost per hour is the owning-and-operating number tracked over time per machine, and the trend is the signal: a machine whose cost per hour is climbing is telling you the repair curve is turning up. PM compliance is the share of scheduled services done on time, and it is the leading indicator, because it predicts the other two. High PM compliance today is high uptime and controlled cost next quarter.
Watch the three together. PM compliance is the one you can control directly and the one that drives the rest, so if you track one number, track the percentage of services done on the interval. When that slips, uptime follows it down a few months later, every time.
| Metric | What it measures | Why it matters |
|---|---|---|
| Uptime / availability | Share of needed time the machine was ready | What the crew feels; low uptime idles them |
| Cost per hour | Owning plus operating cost over hours run | Trend flags the repair curve turning up |
| PM compliance % | Scheduled services done on time | Leading indicator; predicts the other two |
Where fleet maintenance programs break down
Programs fail in a handful of predictable ways, and they are all versions of the same thing: the discipline slips when the season gets busy, which is exactly when the equipment is working hardest.
Run-to-failure with no real PM is the first and worst. The machine runs until it quits, every repair is an emergency, and the fleet lurches from breakdown to breakdown. No hour tracking is the next, because without the meter reading the interval is a guess and the guess always runs long. No daily walkaround means the small problem is never caught cold and always found on the job. No per-asset records means nobody knows what was done or what is due, so services slide and history is lost. Missed DVIR and DOT inspections park the on-road trucks and risk the fines. And PM done mid-job, or skipped until it becomes a mid-job breakdown, turns the cheap planned hour into the expensive lost day. Each of these is a habit, not a one-time event, and the program is the set of habits that prevents them.
What to document
The record is what makes the program real after the fact. It is what answers the question at trade-in, the warranty claim, the repair-or-replace call, and the next-service trigger. Capture it per machine, not in a pile.
For each asset, record the hour meter or odometer reading, the date and what service was performed, the parts and fluids used, who did the work, and what is due next. Log defects as the operator finds them, tied to the machine, with the repair that closed them. Track the DVIR and periodic inspection records for the on-road trucks on the federal retention clock. Roll the cost up per machine over its life. The table below is the working set.
| What to record | Why it matters |
|---|---|
| Hour meter / odometer at service | Triggers the next interval and feeds cost per hour |
| Date, service performed, parts used | The proof of care and the history at resale |
| Operator defects and the repair that closed them | Catches the small failure before it grows |
| DVIR and periodic inspection records | Federal retention: DVIR 3 months, periodic 14 months |
| Cost per machine over its life | Drives repair-or-replace and the bid |
| Warranty terms and expiration | Keeps claimable failures from being paid out of pocket |
| What is due next, by machine | Lets you schedule PM in the down time |
Common mistakes
- Running equipment to failure instead of servicing it on the OEM interval.
- Not tracking hours or miles, so the service interval is a guess that always runs long.
- Skipping the daily walkaround when the crew is rushed, then finding the leak on the job.
- Keeping no per-asset service history, so nobody knows what was done or what is due.
- Missing DVIR or the annual periodic inspection on the on-road trucks.
- Doing the PM mid-job, or skipping it until it becomes a mid-job breakdown, instead of in the down time.
Field checklist
Want this checklist to run itself on every job — with photo proof and a signed record crews can hand the customer? That's FieldOS.
Standards and references
The OEM service manual is the first authority on this work. The manufacturer sets the service intervals, the fluids and filters, and the procedures for each machine, and that schedule governs over any rule of thumb. Service by the hours in the manual, shorten the interval in hard or dusty service per the manufacturer's guidance, and use the specified fluid, because the wrong oil or coolant voids the logic of the interval. When the manual and a forum disagree, the manual wins.
For the on-road trucks, the Federal Motor Carrier Safety Administration rules govern. The driver vehicle inspection report sits in 49 CFR 396.11 and the pre-trip safety requirement in 392.7, and the periodic inspection in 49 CFR 396.17 calls for an inspection at least every 12 months against the standards in Appendix A. Whether and exactly how these apply depends on the vehicle's weight, its use, and whether it operates in interstate commerce, so confirm what governs your trucks with the FMCSA rules and your state requirements rather than assuming. Retention periods and penalties are set in the regulation.
For the cost side, the owning-and-operating cost method is the standard framework, laid out in equipment cost references including Caterpillar's Performance Handbook. It splits the fixed owning cost from the variable operating cost and divides by the hours worked. The exact depreciation schedule, interest, and fuel-burn figures depend on your machines, your purchase terms, and local prices, so build the number from your own fleet's data, not a generic table. Stress the three things the program runs on: PM by hours on the OEM interval, the daily walkaround, and per-asset records.
Units and terms
Fleet maintenance carries its own shorthand, and the same idea shows up under a few names across a manual, a dealer portal, and a DOT file.
Machine run time is measured in engine hours off the hour meter, while on-road trucks run on miles off the odometer. PM means preventive or planned maintenance, the scheduled work; a CMMS is the computerized maintenance management system that tracks it. DVIR is the driver vehicle inspection report; the annual federal check is the periodic inspection under 396.17. Owning and operating cost, sometimes called O&O or total cost of ownership, is the fixed plus variable cost divided by hours. GET stands for ground-engaging tools, the cutting edges, teeth, and blades that wear by design.
- PM
- Preventive or planned maintenance, the scheduled servicing done on an interval rather than after failure
- Hour meter / engine hours
- The running-time counter on a machine that triggers the service interval, the equivalent of the odometer on a truck
- DVIR
- Driver vehicle inspection report, the federally required record of a commercial truck's condition under 49 CFR 396.11
- Periodic inspection
- The annual federal inspection of a commercial motor vehicle under 49 CFR 396.17, at least once every 12 months
- Owning and operating cost
- Fixed owning cost plus variable operating cost, divided by hours worked, to get the cost per hour
- CMMS
- Computerized maintenance management system, the software that holds the schedule, history, and cost per asset
- GET
- Ground-engaging tools, the cutting edges, bucket teeth, and blades that wear by design and get replaced on a plan
FAQ
What is a fleet maintenance program?
A fleet maintenance program is the scheduled servicing, daily inspections, and per-machine records that keep a contractor's trucks and heavy equipment running. It services each machine on the OEM interval by hours or miles, runs a daily walkaround, reports defects, and keeps a service history per asset so a breakdown does not idle the crew.
How often should you service heavy equipment?
Service heavy equipment on the OEM interval by running hours, not by waiting for it to break. Most manufacturers schedule service at 250, 500, 1,000, and 2,000 hours, with engine oil and filter typically near 250 hours. Hard, dusty, or high-load service can pull the interval in 20 to 30 percent, and the machine's manual controls.
What is a DVIR?
A DVIR is a driver vehicle inspection report, the record a commercial driver makes of a truck's condition under federal rule 49 CFR 396.11. For property-carrying trucks a written report is required when a defect is found. It covers brakes, steering, tires, lights, and other safety items, and carriers retain it at least three months.
What is owning and operating cost?
Owning and operating cost is what a machine costs per hour it runs. Owning cost is fixed: depreciation, interest, insurance, taxes, and storage. Operating cost is variable: fuel, maintenance, repairs, wear parts, and tires or tracks. Add both and divide by hours worked. You need it to bid the job and to charge for the equipment.
How do you track hours to trigger preventive maintenance?
Capture the hour meter reading regularly, off the machine during the daily check or automatically through telematics, and trigger the service before the interval passes. A clipboard in the cab fails the first busy week. A field tool like FieldOS logs the reading against the asset, flags service due before it goes past, and feeds the cost-per-hour math.
Is a daily walkaround inspection worth the time?
Yes. The daily walkaround catches the leak, low tire, worn edge, or loose part cold in the yard, before it strands the machine on the job. A five-minute look at a fitting beats a hydraulic failure mid-load that idles the whole crew. On the on-road trucks the pre-trip is also a federal requirement under 49 CFR 392.7.
When should you repair or replace a machine?
Replace when the rising repair cost, the downtime it causes, and its falling resale value say keeping it costs more than replacing it. Watch the trend, not one bill. When annual repair and downtime cost rivals a payment on a replacement, replace it, and sell while it still runs and still has a documented history.
What is the difference between a DVIR and the annual DOT inspection?
A DVIR is the daily driver report of a truck's condition under 49 CFR 396.11, made when a defect is found. The annual periodic inspection under 49 CFR 396.17 is a once-every-12-months inspection against the federal standards in Appendix A, with documentation kept on the vehicle. One is daily, the other is yearly, and both apply to commercial motor vehicles.
Why does fuel and idle time matter on a paving fleet?
Fuel is often 30 to 50 percent of operating cost, and a paving fleet idles a lot waiting on the plant and between trucks. An idling engine burns fuel, adds hours toward the next service, and produces nothing. Shut machines down when they sit, and track fuel per machine so the outlier burning more than its sisters shows up.
What software do you use to track a fleet maintenance program?
Use a maintenance management system that shows what PM is due, holds each machine's service history, captures operator defects, and rolls up cost per asset. A clipboard and a spreadsheet do none of that well. FieldOS handles the field side: operators log hours and defects from their phone, and the manager sees the whole fleet's status in one place.