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The hydraulic system of a deck winch has been drained, flushed, and refilled with hydraulic fluid. An erratic knocking noise from the hydraulic motor when the winch is started would indicate __________. |
A) the fluid level in the reservoir is too high |
B) clogged suction line fluid filters |
C) air trapped in the system |
D) abrasive matter circulating in the oil |
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