TEXAS CDL AIR BRAKES EXAM, PRACTICE EXAM AND STUDY GUIDE NEWEST 2026 ACTUAL EXAM 250 QUESTIONS AND CORRECT DETAILED ANSWERS WITH (VERIFIED ANSWERS) |ALREADY GRADED A

TEXAS CDL AIR BRAKES EXAM, PRACTICE EXAM AND STUDY GUIDE NEWEST 2026 ACTUAL EXAM 250 QUESTIONS AND CORRECT DETAILED ANSWERS WITH (VERIFIED ANSWERS) |ALREADY GRADED A

TEXAS CDL AIR BRAKES EXAM, PRACTICE EXAM AND STUDY GUIDE NEWEST 2026 ACTUAL EXAM 250 QUESTIONS AND CORRECT DETAILED ANSWERS WITH (VERIFIED ANSWERS) |ALREADY GRADED A TEXAS CDL AIR BRAKES EXAM If the air compressor should develop a leak, what keeps the air in the tanks? - ANSWER- The one way check valve. When driving down a long steep hill you should: - ANSWERRelease the brake when you are 5 mph below you safe speed. The brake system that applies and releases the brakes when a driver uses the brake pedal is the: - ANSWER- Service brake system. The most common type of foundation brakes found on heavy vehicles is the: - ANSWER- S-can drum Vehicles with air brakes must have: - ANSWER- An air pressure gauge to show the pressure available for braking. Air brakes should be drained... - ANSWER- 1. At the end of each working day. 2. To keep sludge from clogging system valves. 3. Manually when automatic devices fail. Fanning air brakes... - ANSWER- Decreases the air pressure. If you air compressor stops working... - ANSWER- You'll still have pressure left in the tanks. The governor allows the air to star pumping aging when it reaches the cut in level or around... - ANSWER- 100 psi You should not use the parking brakes... - ANSWER- When the brakes are hot. The brake drums or discs... - ANSWER- Must not have cracks longer than half the width of the friction area. Slack adjusters... - ANSWER- Can be adjusted manually or automatically. To determine if slack adjusters need adjustment... - ANSWERRelease big the service and parking brakes. An air tank is equipped with a drain valve to remove... - ANSWER- Water and oil. The governor stops pumping air when it reaches the cut out level, or around... - ANSWER- 125 psi The air compressor governor controls... - ANSWER- When the air compressor pumps air into the storage tanks. A dual air brake system... - ANSWER- Has two brake systems and one set of controls. An emergency brake... - ANSWER- Is required on commercial vehicles, must be held by mechanical force, could be activated by loss of air pressure. To check the slack adjusters on s-can brakes, you should ... - ANSWER- Wear gloves and pull hard on each adjuster. To test low pressure warning... - ANSWER- 1. Shut of engine. 2. Turn on electrical power. 3. Step on and off brake pedal to reduce to 60 psi. With dual air systems, the air pressure should build... - ANSWER- From 85 to 100 psi in 45 seconds n A fully charged air system typically has ____ psi. - ANSWER125 To test air leakage rate you should... - ANSWER- Turn off engine and release the service brake. When testing air leakage rates for combination vehicles(before applying the brake pedal), air brake systems should not lose air faster than... - ANSWER- 3 psi per minute. To check the air compressor governor cut in and cut out pressures... - ANSWER- 1. Run the engine at a fast idle. 2. Step in and off the brake to reduce tank pressure. 3. Monitor the air pressure gauge. Brake drums: - ANSWER- 1. Are bolted to the wheels. 2. Are located at each end of the vehicles axles.