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Problem Corrective ActionPossible Causes
A pressure drop occurs when you
turn on a boom.
1. The boom bypass valve is
improperly adjusted.
1. Adjust the boom bypass valve.
2. There is an obstruction in the
boom valve body.
2. Remove the inlet and outlet
connections to the boom valve
and remove any obstructions.
A pressure increase occurs when
you turn on a boom.
1. A nozzle filter is clogged. 1. Remove and clean all nozzles.
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