The accumulator shown in the illustration is pressurized by __________. See illustration MO-0049.
• Trace the flow path of the pressure line from pump "F" and from pump "H" to see which one actually connects to the accumulator (item "E"). • Identify which component in the diagram is the accumulator and which is the steering or control cylinder, so you don’t confuse them. • Look at any check valves or relief valves that might allow or block pressure from one pump or the other from reaching the accumulator.
• Follow the colored pressure line leaving pump "F" and ask yourself: does this line have a direct, open path into the accumulator, or is it blocked or diverted? • Do the same for pump "H": does its outlet line connect, through valves and fittings, to the same line that feeds the accumulator? • If both pumps tie into the same pressure manifold, can either one build pressure in that line, or is one pump mechanically isolated from the accumulator circuit?
• Be sure you have correctly identified item E as the accumulator in this sketch. • Verify whether the outlet of pump F is connected to the same line that goes to the accumulator, without being blocked by a check valve oriented against that flow. • Verify whether the outlet of pump H is connected to that same accumulator line, again checking the direction of any check valves.
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