Type 8 trucks need scheduled inspections and maintenance and this program has been standardized for all vehicles of this type from simple inspections to full overhauls.
PM A – This is classified as a safety inspection and consists of looking at key components including lights, tire condition, fluid levels, and high-wear components. The interval for A service is between 5,000 and 10,000 miles for heavy duty vehicles and sometimes sooner if the vehicle returns for maintenance.
PM B – Usually done between 10,000 and 2000 miles, B includes all A items but adds an oil and filter change and close inspections of the engine and drivetrain. This is also a good opportunity to run ECM codes and take action on any trouble codes.
PM C – This is still a regularly scheduled maintenance procedure but is usually done annually to include alignments, DOT annual inspections, and other manufacturer recommended annual preventive maintenance.
PM D – When a company wants to schedule rebuilds or major components such as engines and transmissions. D maintenance may include winterization for vehicles that will be used in extreme weather conditions.