A. Plug the pipe toward the brake valve; the compressor will now be controlled by the maximum pressure head.
34. Q. If the pipe leading from the main reservoir to the maximum head of the governor breaks, what should be done?
A. Plug the main reservoir end of the pipe. The excess pressure head will now control the compressor in the first three positions of the automatic brake valve handle, but will have no control after the handle is moved as far as lap position.
PARASITE GOVERNOR
35. Q. What is the purpose of the parasite governor, and where is this governor located?
A. This governor is located in the pipe connection between the main reservoir and parasite reservoir, and its purpose is to control the flow of air from the main to the parasite reservoir.
36. Q. What is the purpose of the parasite reservoir?
A. It is here that air is stored for use in all air operated devices on the locomotive, except the brake.
37. Q. Explain the operation of the parasite governor.
A. The operation of this governor is much the same as the compressor governor, and differs only in that the supply valve is open when it is in its lower position.