National Highway Traffic Safety Administration

Troubleshooting trailer lights

DOT regulations state that any and all lights on a tractor must be in working order, including lights on a connected trailer. To make sure those ...

Tech Updates

SAFETY RECALLS   The following are safety recalls issued by the National Highway Traffic Safety Administration:   Paccar is recalling certain TRP branded aluminum wheels sold for resale in the aftermarket with the following part numbers: AW2258B, AW2258M, AW2458B or AW2458M. The rim markings on these wheels were etched to a depth less than the minimum requirements. Thus, ...

Tips on torque wrench use and care

A torque wrench is a precision instrument designed to apply a specific amount of force to a fastener, according to Snap-on. Therefore, it is important that they be used and cared for properly. Guidelines typically are provided noting acceptable torque ranges, the order in which specific fasteners are tightened and the number of times a ...

Copper and water’s effect on the electrical system

Once moisture penetrates copper wiring, it can have a negative impact on a vehicle’s electrical system. According to Phillips, when given a gateway into a vehicle’s electrical system the copper wiring soaks up moisture and contaminants like a dry sponge. On a truck, wiring heats up and cools down ...

Safety recalls

The following are safety recalls recently issued by the National Highway Traffic Safety Administration: The quick release valve cover on certain model year 2012-2013 Freightliner 108SD, Business Class M2, Cascadia and Coronado vehicles, equipped with a Haldex quick release valve, and manufactured from Feb. 3, 2012, through March 2, ...

Brake Shop

Disc(uss) the benefits   Air disc brakes are gaining traction, and that can be good news for all concerned   By John G. Smith, Contributing Editor info@wordsmithmedia.ca     Air disc brakes promise everything from shorter stopping distances to quicker maintenance procedures, but their benefits have been limited to a relatively small share of wheel ends on ...

Properly Maintaining Hoses

Both air and electrical cords that are chaffed, cracked, rubbing or dragging on the deck plate can result in CSA violations. In fact, failure to secure brake hose and tubing against mechanical damage is a four-point CSA violation. Hose holders, tender spring kits and pogo sticks are all useful ...

Clutch Lubrication Requirements For UltraShift Plus Transmission

Unlike the Eaton UltraShift automated transmission, the Eaton UltraShift Plus transmission does not require greasing during vehicle servicing. The UltraShift Plus transmission has grease zerk locations for lubricating the clutch release bearing and the cross-shaft bushing of the ECA motor, in addition to the clutch release bearing and the ...

Fifth Wheel Cylinder Kit Installation

Use the following procedure when installing an air actuated fifth wheel cylinder kit on Fontaine Ultra LT series fifth wheels: Remove the fifth wheel from the mounting bracket. Fontaine advises cleaning the fifth wheel prior to installing the kit. Place the fifth wheel in the upside down position making sure the ...

Brake Shop

Causing friction In the absence of any aftermarket standards, how can a shop find friction material that will perform? Take a good look at the magazine in your hands. Once you finish studying the ads and articles, you could take the pages, combine them with some mounting hardware and re-sell ...