The lube oil strainer shown in the illustration is used on the reduction gear of a mid- size diesel engine. The strainer elements consist of __________. Illustration MO-0057

Correct Answer: Option D — metal disks

Edge-type or metal-disk lube oil strainers utilize alternate stacks of metal filtering disks and cleaning blades. Rotating the handle manually shears trapped particles off the disks, dropping sludge to the bottom of the strainer housing for periodic draining.