Page 13 (130-140) Flashcards
At what pressure should a cylinder relief valve of an internal combustion engine be set to relieve?
The device should be set to relieve at a pressure not more than 40 percent in excess of the maximum firing pressure.
When changing the direction of propeller shaft rotation in a diesel plant equipped with a pneumatic clutch, you must pause at neutral to allow the __________.
clutch to deflate
When reassembling the bowl of the centrifuge, shown in the illustration, the alignment mark on the locking ring passes the bowl cover mark in excess of the manufacturer’s specifications. This is due to __________.
excessive wear of the locking ring and/or bowl threads
A schematic diagram of an isochronous hydraulic governor is shown in the illustration. When the load is removed the speed increases, and the __________.
pilot valve (piece #10) moves upward
A viscous damper, as used on a marine diesel, is a sealed precision built device which dampens the torsional vibrations in the __________.
crankshaft
The end of fuel injection in a port-and-helix metering pump can be controlled by __________.
uncovering a fuel port in the pump barrel
Loss of lubricating oil pressure to the main propulsion diesel engine will actuate a/an __________.
audible/visual alarm
Higher than normal jacket water temperatures occurring in all cylinders of a diesel engine can result from a/an __________.
clogged sea suction strainer
If the operating speed of a diesel engine increases without an apparent change in the engine control settings, you may suspect a __________.
malfunctioning governor
Regarding the water level electrode assembly shown in the illustration, arrow “C” indicates the point at which the __________.
feed pump starts
In the device shown in the illustration, the component lettered “A” is the __________.
dirty oil input port
