Question 208Motor Plants - Assistant Engineer

The correct answer is D) pump suction line. The coarse screen wire mesh strainer is typically found on the pump suction line of a diesel engine lubrication system. This is to prevent large debris and contaminants from entering the lubrication pump, which could potentially damage the pump or other critical components in the system. Placing the strainer on the suction side ensures that the oil is filtered before it enters the pump, protecting the system. The other options are incorrect because: A) the pump discharge line is downstream of the pump and does not require a strainer, B) the gravity tank inlet line does not need a strainer as the tank should already have a filter, and C) the filter bypass return line is also downstream of the filtration process.