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 |