Clutch life is tied to wear, so if the clutch is not slipping, it is not wearing. Starting the load in the lowest gear possible is...

If specifying steel wheels, on steer, lift and or drive axles, might ask the OEM (Original Equipment Manufacturer) if they have an option...

If the chassis has an air compressor (air brakes), then a dryer should be specified. FMVSS 136 Phase 1 mandated ESP/ESC starting Aug 2017...

Remember the power divider function? On a set of two or three drive axles the incoming power is most often split in half going into the...

Charge Air Coolers are used to improve engine efficiency by increasing intake air density from the turbo. This increase of air density...

Every fleet owner is excited about reduced maintenance. A responsible service manager understands that this does not mean you can turn a...

Trailer angle dip refers to the point when the trailer top corner hits the top of the sleeper. To assist with envisioning this, think of...

It is important to have a sicker in the cab door jamb that indicates this vehicle complies with California and U.S. emissions as opposed...

Have you always wondered if buying premix 50/50 antifreeze is a good idea as compared to purchasing concentrate and mixing yourself? The...

Ever dust an engine? Can you over change the element? When is the proper time to replace? Many maintenance facilities change air...

Trailer gap is measured from the nose of the trailer to the back panel of the sleeper. Sleeper extenders are not a consideration for the...

Most tractors today come equipped with an Automatic Traction Control (ATC) system and the functionality is optional on most all of...

The Federal Government has required most tractors to have an Antilock Brake System (ABS) since March of 1997. The legislation extended...

What is the purpose of a lubrication pump in a tandem drive axle set? There is a theory that this pump sends lube to the outer ends, this...

FMCSA 49 CFR § 393.67 - Liquid fuel tanks. Fuel tanks, 25 gallons or more, are required to meet FMCSS standards and indicate so on the...

Most OE’s offer auto reset mechanical circuit breakers as an option to fuses in the power distribution box. For a few more dollars, the...

Fuel filter maintenance is more important today, than any time in the past given the common rail design and tight tolerances. See below...

Red and Blue airlines connect the tractor air brake system to the trailer. Red is emergency brakes and applies system air pressure to the...

Republished due to content error - rail treatments are applied AFTER the holes are punched or drilled to ensure protection inside the...

Today’s engines are designed to deliver maximum torque at low RPM. This provides for good fuel economy with proper gearing Torque curves...