When an Allison retarder on a hydromechanical transmission fails to operate at high speeds,what is the most likely source of the problem?
A) governor malfunction
B) high main pressure
C) air supply problem
D) modulator malfunction

Question

Quizplus · Accepted Answer

An air supply problem is the most likely source of the problem because the Allison retarder is an air-actuated device. If there is not enough air pressure, the retarder will not be able to operate properly.

When an Allison Retarder on a Hydromechanical Transmission Fails to Operate