Coolant System (ELDT B)
How does a driver check the coolant level? Modern trucks are equipped with a transparent coolant reservoir, with fluid level lines on the side. Check the level when the engine is cool. Add coolant as needed, do not overfill.
Maintenance
Oil System (ELDT B)
What are the proper steps to check the truck oil level? Park the truck on flat ground, and turn off the engine. Let the vehicle rest for several minutes for the oil to settle. Pull the oil dipstick out, wipe it clean with a cloth, and reinsert it. Pull the dipstick out again, and check …
Fuel System (ELDT B)
What is the recommended method for checking the fuel level? Park the vehicle on flat ground.Remove the fuel cap (gloves are recommended). As you are removing the cap, verify that it is secure with a metal safety chain, and has a rubber O-ring on the underside of the cap. Check the fuel level (a flashlight may …
Routine Service and Basic Maintenance (ELDT B)
Do commercial drivers need to know how to perform routine service and basic maintenance? Professional drivers are expected to understand and be able to complete basic and routine maintenance such as fueling the vehicle, checking and adding oil, replacing and draining fuel filters, adding coolant, checking battery levels, changing air filters, replacing light bulbs, fuses …
Types of Maintenance (ELDT B)
Why is it important to have well maintained equipment? Properly maintained equipment is vital to the success of a motor carrier/trucking company. A properly maintained vehicle will reduce unexpected breakdowns, improve on-time delivery, attract skilled drivers, reduce operating costs and improve safety on the roadways. Most forms of service, maintenance and repairs need to be …
Understanding the Driver Vehicle Inspection Report (ELDT B)
What do drivers need to know about completing a Driver Vehicle Inspection Report (DVIR)? The DVIR is a vital component to the maintenance process because it records any issues, deficiencies, malfunctions, or safety concerns the driver can identify. Often times the driver can detect a defect before it becomes a major problem, which can reduce …
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Simple Emergency Repairs
What simple emergency repairs should a driver be able to perform? Drivers need to be able to change faulty fuses, circuit breakers and light bulbs while on the road. When replacing a fuse, make sure it is the proper size and amp rating. Refer to the fuse diagram to know the specific fuse function. Use …
Brakes
Can any driver adjust the tractor-trailer brakes? No. The driver must be certified to adjust brakes. Many tractors and trailers have self-adjusting slack adjusters or automatic slack adjusters. Drivers should learn what type of brakes their tractor and trailer have, and learn company protocol for adjusting. Brake slack should not exceed one inch of free-play. …
Air Reservoir Tanks
How frequently should the air reservoir tanks be drained? Air tanks should be drained or bled regularly at the end of the driver’s shift. Draining the tanks down to 0 PSI will drain moisture and prevent it from going deeper into the air system. Park the vehicle on level ground, and open the drain at …
Tires
Should drivers change their own tires? Changing tires can be very dangerous, only skilled mechanics with the proper tools should change tires. Checking tire air pressure is a responsibility of the driver. When preparing to check the tire air pressure, read the manufacturer’s recommended tire pressure listed on the sidewall of the tire. Make sure …