Which of the following statements is true concerning the hydraulic starting system shown in the illustration? See illustration MO-0049.
• Identify the function of each labeled component in the hydraulic starting system, especially reservoir A, accumulator E, and any hand pump shown. • Recall how a typical hydraulic accumulator is constructed and charged (what gas is used, and where it is located relative to the hydraulic fluid). • Consider how hydraulic systems can be charged and operated, including the role of a hand pump and whether temperature alone would prevent operation.
• From the illustration, trace the fluid path from the reservoir and see whether it could directly maintain pressure on the accumulator, or if it only supplies makeup fluid. • Look closely at accumulator E: does the drawing indicate a gas charge on one side and hydraulic fluid on the other? Which end appears connected to the hydraulic circuit? • Find any component that could serve as a manual charging device and decide whether its presence makes some options clearly incorrect.
• Verify which line from reservoir A actually connects to the pressure side of the system versus just feeding the pump inlet. • Confirm which end of accumulator E is connected into the hydraulic lines shown, and where the gas charge would logically be located. • Check whether the system includes a hand pump (often a small cylinder with a lever) and how it connects to the accumulator, to determine if manual charging is possible.
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