Question 231Motor Plants - Assistant Engineer70% to pass
Before starting a diesel engine that has an engine driven lube oil pump, the operator should_______________.
AI Explanation
The correct answer is C) pressurize the lube oil system with the prelube pump.
Before starting a diesel engine with an engine-driven lube oil pump, the operator should pressurize the lube oil system using the prelube pump. This ensures that the engine bearings and other critical components are adequately lubricated before the engine starts, preventing potential damage from dry starts.
The other options are incorrect because: A) opening the bypass line would depressurize the system, B) cutting in the lube oil cooler is not necessary for starting the engine, and D) topping off the expansion tank does not directly pressurize the lube oil system.
Related Questions
#229 Which lubricating oil additive is used in diesel engines to reduce the tendency for sludge and varnish to form on the engine parts? #230 On most modern diesel engines, the main and connecting rod bearings receive their lubricating oil by_______________.#232 What type of engine lubrication oil filter system sends filtered oil directly to the high- pressure supply gallery? #233 In a bypass type lubrication system for a diesel engine, the dirty oil line to the centrifuge should be taken from the_______________.#234 Which of the following statements is true concerning a main diesel engine oil cooler?