ASE A2 Questions and Answers Already Passed

ASE A2 Questions and Answers Already Passed What is the purpose of a brake band? ✔✔It stops and holds the drum that is connected to a member of the planetary gearset. What are brake bands made out of? ✔✔Brake bands a ...

ASE A2 Questions and Answers Already Passed What is the purpose of a brake band? ✔✔It stops and holds the drum that is connected to a member of the planetary gearset. What are brake bands made out of? ✔✔Brake bands are flexible steel plates lined with friction material. That material can be organic or semi-metallic. What aids in brake band hear dissipation? ✔✔The friction material absorbs trans fluid. When the brake band tightens around the drum, why doesnt trans fluid get trapped in between the two surfaces? ✔✔Trans fluid is squeezed out into grooves cut in the lining. What is the benefit of using a softer metal like iron for the drum? ✔✔The dimpled surface aids in both clamping force and heat dissapation. How can you tell if a drum is made out of harder metal? ✔✔The surface is usually smooth. What are the benefits of having a double wrapped band? ✔✔Double wrapped bands have more clamping force and require less hydraulic pressure to produce the same amount of stopping power. What happens as the brake band wears? ✔✔A gap forms between the band and drum, causing slippage. What controls brake band application? ✔✔A hydraulically controlled servo. What sets a clutch apart from a brake band? Why are they two separate style components? ✔✔Brake bands only stop and hold. Clutches stop, hold, and drive. Name three different components that automatic transmissions use to control and lubricate the transmission. ✔✔Pressure Regulator Valve Governor Valve Throttle Pressure Valve Governor pressure increases with ___________. ✔✔Vehicle speed. What happens when governor pressure rises? ✔✔The car will upshift. What happens as throttle pressure rises? ✔✔The car will downshift. What does the pressure regulator valve control? ✔✔Mainline pressure. What does throttle pressure indicate? ✔✔Engine load. What are three way that different vehicles control the throttle valve? ✔✔Vacuum Modulator Throttle Linkage Electric Solenoid Name three components of a governor valve. ✔✔Springs Centrifugal Weights Spool Valve What is a spool valve? ✔✔Spool valves control the direction and flow of fluid or air in a system. How are shift valves controlled on older vehicles? ✔✔Governor pressure works on one end of the valve. throttle pressure works on the other end. What specifically do shift valves control? ✔✔Shift valves control reactionary devices such as the clutches and bands that control the planetary gearsets. What is overdrive? ✔✔When the drive gear is bigger than the driven gear. What are the two purposes of friction material grooves? ✔✔Heat dissipation and it gives a pathway for trans fluid to escape. How long should friction disks be soaked during transmission cleaning and rebuilding? ✔✔At least 20 minutes. What is the purpose of the piston in the drum? ✔✔It applies pressure to the clutch pack and either holds or drives the gear assembly. What is the proper procedure when a sticky/tarnished valve is encountered? ✔✔Clean it carb clean or similar cleaner and dry it using compressed air or a lint free cloth. How many shift valves does a transmission have? ✔✔There is one shift valve for every upshift. For example, a 4-speed engine has 3 shift valves. How is transmission hydraulic pressure tested? ✔✔Most transmissions have test ports on the trans case. What must be functioning correctly before the transmission is checked for problems? ✔✔The engine must be operating correctly before the transmission can be checked. What are the 3 types of oil pumps that transmissions use? ✔✔Vane-type Gear-type Rotor-type What happens when the oil filter becomes clogged? ✔✔The valve body and pump become oil starved because oil is unable to get to where it needs to fast enough. Where is the internal oil filter usually mounted? ✔✔It is usually mounted to the valve body under the oil pan. Some vehicles have additional oil filters which are kept where? ✔✔In the trans cooler lines. Where is a transmission range sensor and neutral safety switch usually located? ✔✔On the transmission case. What are two ways tr sensors are configured electrically? (There may be more ways.) ✔✔In series with resistors. Parallel circuits. Where are the majority of passages located in the trans? ✔✔In the valve body. Name two plates that are part of the valve body? ✔✔Separator Transfer What is the purpose of the transfer and separator plates? ✔✔They prevent flow into some passages, while allowing it to others. How do separator plates achieve their purpose? ✔✔They have seats for check balls. Many of these check balls are spring loaded so flow can only go one way. ✔✔