ARG Truck

APM vs. BPM: Preventative Maintenance 101

Reliable pickup and delivery depends on reliable vehicles, and that’s why sound maintenance is such an important part of quality service. To keep our engines running properly—and our deliveries on time—our fleet goes through regular, scheduled inspections.

There are two types of Preventative Maintenance (PM) inspections that are carried out on our vehicles: A-PMs and B-PMs. These provide our service teams with an opportunity to evaluate trucks’ performance and anticipate potential issues so that they can be addressed before they become problematic.


This form of preventative maintenance involves inspection of all major engine and truck components: transmission, brakes, windows, tire tread and pressure, spots that need greasing, etc. The inspection itself takes about two and a half hours to complete. If any repairs or replacements need to be made—such as tire changes, replacement of windows or mirrors, etc.—these require additional time.

A-PMs are performed on truck tractors based on mileage – usually every 10,000 to 15,000 miles, depending on the size and type of truck. For trailers, the frequency of service is determined by time rather than mileage.


Also known as “wet” PMs, B-PMs involve re-filling fluids (engine oil, coolant, brake fluid, windshield fluid, etc.) in addition to all other inspections required as part of the A-PM. Because of these extra requirements, B-PMs take slightly longer to complete—about three and a half hours—and are required less often than A-PMs. Like A-PMs, they are carried out at scheduled intervals by mileage or by time (usually every 10,000 to 35,000 miles for tractors).

Scheduled Cleanings

In addition to providing an important opportunity to monitor and assess our fleet’s performance, regular inspections ensure that we maintain a consistent schedule for truck cleaning. This is important for making sure that our trucks are always clean and professional for our clients and their customers.

An Opportunity To Assess

Occasionally, our service team tries new equipment to determine whether any new components should be considered. Regular scheduled maintenance appointments allow us to try new technology for a limited time and then gather feedback to evaluate their performance and value. In the past, we’ve had great success with new technological innovations like truck satellites. It’s largely because of regular interaction with drivers and trucks that we’re able to effectively determine the benefit of these additions.

Regular scheduled service is important for ensuring the longevity of fleet and equipment. These steps also provide us with a great opportunity to assess our fleet’s performance. This proactive dedication to service is important for keeping our drivers ahead of the pack.