CDL: chapter 18 identification and diagnosis of malfunctions

As part of an oil change, the condition of the _________ should be assessed. This item can help prolong the live of the engine by removing contaminants as oil passes through it. A. filter B. dipstick C. oil D. cap

A. filter

This system is what connects the tractor and trailer. A. transmission system B. coupling system C. kingpin system D. suspension system

B. coupling system

The _________ is a series of connected mechanical parts which take the power generated by the engine and applies it to the tractor's drive wheels. A. clutch B. drive train C. kingpin D. all of the above

B. drive train

The suspension system allows the axles to move up and down in response to ground changes without seriously affecting the load. _________ allows the stress of road shocks to be distributed evenly throughout the frame. A. driving at 55 mph B. securing the suspension system at points spread throughout the frame C. securing the suspension points directly above each of set of wheels D. both A and B

B. securing the suspension system at points spread throughout the frame

The lubrication system lubricates, cools, and cleans the: A. exhaust B. drive train C. engine D. all of the above

C. engine

A defect in the parking brake system can interfere with a vehicle's ability to: A. steer properly B. accelerate C. slow down or stop D. shift into gear

C. slow down or stop

When looking over the suspension system, you need to check for cracked, loose, or: A. broken spring hangers B. damaged torque rods C. damaged U-bolts D. all of the above

D. all of the above

To keep vehicle systems in good operating conditions: A. pay attention to your senses; sights, sounds, smells, and/or the feel of the vehicle can indicate a potential problem B. report vehicle defects and deficiencies that you cannot fix to your company C. make sure you only schedule maintenance work when there's a problem with your vehicle D both A and B

D. both A and B

When checking the coupling system, you need to: A. check the fifth wheel for cracks, breaks, security, and grease B. check the kingpin for excessive cracks, bending, or wear C. check the differential for loose wire connections D. both A and B

D. both A and B

If your exhaust temperature is too high, what can get damaged? A. engine B. aftercooler C. turbocharger D. both A and C

D. both A and C