The truck repair work order process, step by step

What the rules require from your repair process

No regulation tells you how to run a shop, but both countries tell you what the process has to produce.

United States

• 49 CFR 396.3 requires every motor carrier to systematically inspect, repair and maintain all vehicles under its control, with parts and accessories in safe and proper operating condition at all times. For each motor vehicle it controls for 30 consecutive days, the carrier keeps a record that identifies the vehicle (company number if marked, make, serial number and year), a means to show the nature and due date of upcoming inspections and maintenance, and a record of inspections, repairs and maintenance with their date and nature. The records stay where the vehicle is housed or maintained for one year, and for six months after the vehicle leaves the carrier’s control.
• 49 CFR 396.11 requires the carrier to repair any defect on a driver vehicle inspection report (DVIR) that is likely to affect safe operation before the vehicle is driven, and to certify on the report that the defect was repaired or that repair is unnecessary before the vehicle runs again. The report and the certification are kept for three months.
• 49 CFR 396.13 has the next driver review the last DVIR and sign it to acknowledge that the required repairs were certified.
• 49 CFR 396.25 allows only a qualified brake inspector to be responsible for brake inspection, maintenance, service or repairs, and requires the carrier to keep evidence of that person’s qualifications.

Canada

• NSC Standard 11 requires every carrier to have a system to inspect, maintain and repair each vehicle at regular intervals, and lists the records for each vehicle: identification including plate or unit number, make, serial number, year and tire size; the nature and due date of upcoming work; every inspection, repair and maintenance job with its date and nature; a lubrication record; and any axle or suspension change that affects the manufacturer’s gross vehicle or axle weight limits. Records are kept where the vehicle is housed or maintained for at least two years, and for six months after it leaves the carrier’s control. Standard 11 adds that many jurisdictions require repair invoices, such as brake repairs, to be kept for four or five years.
• NSC Standard 13 requires drivers to record defects found on the daily trip inspection and report them to the carrier, and the carrier to make sure reported defects are corrected before the next required inspection or within the time the jurisdiction sets. Reports and certifications of repairs are kept for at least six months.

Standard 11 is enforced through facility audits rather than at the roadside: the auditor picks vehicles from the fleet and asks for their files. A work order process that ends in a complete, dated record for every job is how you pass that audit without a scramble.

The nine steps of a repair work order

1. Request

Repair requests reach the shop from many directions: a defect a driver writes on a trip inspection report, a PM coming due, a roadside inspection report, a mechanic’s finding during another job, or a breakdown call. A shop lead or supervisor reviews each one and decides whether it needs a work order now, can be planned into the next PM, or needs no repair. Under 396.11, “repair is unnecessary” is a decision someone signs, so record who made it.

2. Open the work order

One work order per job, with the unit number, the odometer reading, the job type (PM, repair, inspection or breakdown), a priority, and the complaint in plain words. Note whether the truck is safe to run or must stay out of service while it waits.

3. Assign

Give the job a lead mechanic, and assistants if it needs them. The lead accepts the job so everyone knows it has an owner. Brake work goes to someone who meets the 396.25 brake inspector qualifications.

4. Diagnose

A useful habit is to write every repair line as complaint, cause and correction. The cause is the easiest part to skip, and it is the part that tells you next month whether this is a repeat failure.

5. Parts

Record each part with its number and quantity, whether it came from stock or was bought for the job, and any warranty on it. If the job stops for parts, the status says so and the person who opened the work order knows why.

6. Labour

Each mechanic records time on the job as it happens, with a manual entry when a timer was missed. Separate diagnosis from repair time if you want to see where hours really go.

7. Quality check

Someone other than the person who did the work checks it where it matters: a road test, a leak test, brake adjustment measured and written down. NSC Standard 11 suggests marking measurements on your inspection forms and keeping all invoices.

8. Close

Record the correction, the closing odometer, the date and who closed it. If the job came from a DVIR, certify the repair on the report. If the truck was out of service, release it and tell the driver and dispatch.

9. File the record

The closed work order, its invoices and any signed inspection report go into the vehicle’s file, where they have to stay for the retention periods above.

Statuses: one language for the shop and dispatch

Statuses only help if everyone uses the same short list and moves jobs through it the same way. A set like this covers most shops:

Keep “out of service” as a separate flag rather than a status. A truck can be out of service while its work order is open, in progress or waiting for parts, and dispatch needs to see the flag whatever the status is.

Labour time and parts: capture them on the job

Labour and parts are where work orders usually go thin. Times get written in at the end of the day, parts go on the truck and never on the paper, and the cost of a repair ends up as a guess.

• Timers per mechanic. Start and stop on the job, per person. When two mechanics work one truck, each records their own time.
• A rate per mechanic. Labour cost is hours times that mechanic’s rate, so a senior technician’s hour and an apprentice’s hour are costed correctly.
• Parts with part numbers. Part number, description, quantity and cost, and whether it came from stock.
• Outside work. When a job goes to an outside shop, attach its invoice to the same vehicle so the vehicle’s total cost is complete.
• Who sees costs. Mechanics need the job and the parts list; decide whether they also need the prices.

Captured this way, every closed work order adds to the vehicle’s cost and service history, and you can see which units, systems and repairs are costing the most. For the maths, see fleet maintenance cost per mile.

Out-of-service units and keeping drivers informed

When a defect makes a truck unsafe, it comes off the dispatch board until the work order closes. The rules back that up: 49 CFR 396.11 requires safety-related DVIR defects to be repaired before the vehicle is driven, and NSC Standard 13 says no one may drive a commercial vehicle with a major defect.

A roadside out-of-service order adds deadlines. Under 49 CFR 396.9, nobody may operate the vehicle until the repairs required by the out-of-service notice are complete, and within 15 days of the inspection the carrier certifies on the report that all violations were corrected and keeps a copy for twelve months. Open the work order the day the report arrives. Our guide to the CVSA out-of-service criteria covers the rest of that process.

Drivers and dispatch need three things from the shop: an honest estimate when the job starts, a word when it stops for parts, and a clear “back in service” when it closes. When the driver next takes the truck, 396.13 has them review the last DVIR and sign that the repairs were certified, so the certification has to be done before the keys are handed over.

Sample work order fields

Whether your work orders are on paper or in software, these fields cover what the rules ask for and what a shop needs to run the job.

Shop KPIs worth tracking

A few measures, taken from your own work orders, tell you more than any industry average. Track the trend month to month rather than chasing a target number.

• Turnaround time: hours from work order opened to closed, by job type.
• Downtime per unit: hours each truck spent out of service in the period.
• Time waiting for parts: hours jobs spent in the waiting-for-parts status.
• PM done on time: share of PM services completed by their due date or mileage.
• Repeat repairs: jobs on the same unit and system within a window you choose, a sign that the cause was missed.
• Recorded labour: hours logged on work orders compared with hours paid, which shows how much shop time is not being captured.
• Cost per vehicle and per mile: parts, labour and outside repairs for each unit.
• Roadside out-of-service rate: how often your trucks are placed out of service at inspections, the outside check on everything above.