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Chapter 19
End of Chapter Review Questions Answer Key
1. Which of the following conditions can cause aerated oil in automatic transmissions?
2. On most Allison transmissions, when the oil level reads at the FULL mark on the
dipstick with the transmission at operating temperature, which of the following
indicates the actual level of oil in the transmission?
3. Which of the following could result in an inaccurate dipstick reading?
4. When performing an automatic transmission cold check level, at what temperature
should the oil be?
5. When the transmission input speed is increased, which of the following should
happen to the oil level in the sump?
6. What effect will an increase in oil temperature have on the transmission oil level?
7. The ___________________ is located on top of the transmission and its function is to
prevent pressure buildup within the transmission housing.
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8. Technician A suggests that it is good practice to install an auxiliary filter after a
transmission failure that resulted in debris being introduced into the hydraulic circuit.
Technician B changes the auxiliary filter every 5,000 miles (8,000 km). Who is
correct?
9. What procedure should be used to identify whether the engine or transmission is at
fault after a drivetrain complaint in a chassis equipped with an automatic
transmission?
10. An automatic transmission upshifts prematurely. Technician A says that the
mechanical modulator might have to be adjusted. Technician B says that the shift
valve might have to be adjusted. Who is correct?
11. If the engine stall speed is more than 150 rpm above the stall speed specified by the
engine manufacturer, which of the following is more likely?
12. A stall speed test meets specification on a transmission with an oil overheat problem.
Which of the following is a more likely cause?
13. A stall speed that tests 35 percent below the OEM engine specification would most
likely indicate:
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14. Which of the following would be the most accurate method of checking transmission
shift points?
15. When a valve body is mounted to a test stand, which of the following components is
driven by the test equipment?