Heavy duty truck - Study guides, Class notes & Summaries

Heavy Duty Truck Systems - Chapter 29 exam questions and answers

In hydraulic disc brakes, the pads are forced against the rotors by: the pistons As the pressure of fluid received by the wheel cylinder of a drum brake system increases, which of the following happens? The wheel cylinder cups and pistons are forced apart Which of the following safety devices delays application of front disc brakes in a disc/drum system until pressure is built up in the hydraulic system? a metering valve In a typical air-over-hydraulic brake system, -depr...

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you are about to loosen a fishplate bolt. which wrench would be least likely to slip? (Ans- a. 6 point box end wrench b. 12 point box end wrench c. open end wrench you are using a plumb line to check a rail for plumb. you find that at the top it measures 1" and at the bottom it measures 1 1/4". what does this tell you? (Ans- a. the top of the rail needs to go towards the center b. the top of the rail needs to go toward the wall c. the bottom of the rail needs to go toward the wa...

Which of the following is the best practice when instructed to block the wheels on a tractor/trailer combination? correct answers Place a pair of wedged wheel chocks on one tractor drive axle and one trailer axle wheel. What is the required amount of slack adjuster free travel on a properly adjusted, manual S-cam brake? correct answers 3/8 to 5/8 inch Which of the following foundation brake components are lubricated with chassis grease, either for component life or as part of a lube job? c...

Chapter #28 - Review Questions with Answers (Heavy Duty Truck Systems 5th edition)