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Engine_2014 : General Subjects - 2292/3524
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If the boom shown in the illustration can be raised, but not lowered, the problem is most likely with the "Topping Circuit" __________.
A) hydraulic pump
B) linear actuator controlling boom angle
C) counterbalance valve
D) counterbalance valve, ball check , failed to close
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Illustration GS-0161

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mannylittle5 - 2019-04-26 16:22:13
Member (131)
boom shown in the illustration can be raised, but not lowered,
counterbalance valve
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