Question 142Motor Plants - Assistant Engineer
70% to passItem '17' in the illustration is the dipstick. When should the length of the dipstick be changed? Illustration MO-0122
AIf the operating oil level of the engine is consistently below normal, it will be necessary to use a longer dipstick.
BIf sludge buildup on the bottom of the pan becomes excessive, it will become necessary to shorten the dipstick to accommodate for the false oil level reading.
CWhen changing the oil in an operating engine, it may become necessary to use a longer stick to obtain the exact location of the oil level at all times.
DIn most situations this would never be done.
AI Explanation
The correct answer is D) In most situations this would never be done. The length of the dipstick should not need to be changed. The dipstick is designed to accurately measure the oil level in the engine crankcase. Changing the length of the dipstick would provide inaccurate oil level readings, which could lead to engine damage if the oil level is not properly maintained. The dipstick length is set by the engine manufacturer and should not be altered. The other answer choices describe situations that would not require changing the dipstick length, as the oil level should be addressed through other means, such as adding or changing the oil, rather than modifying the dipstick.
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