The unit shown in the illustration has just...

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Question 1 of 205eccef9bbacbc34ba4d456d5

The unit shown in the illustration has just been internally cleaned. An inspection was carried out and the unit found to be properly lined up, although item "1" indicates an unusually high vacuum. Your next step should be to __________. See illustration GS-0153.

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🔍 Key Concepts

• Relationship between vacuum reading at item "1" and suction-side restrictions in a pump system • What components were already worked on: the separator internals and lid versus upstream bilge water supply piping and strainers • Difference between problems caused on the discharge side (downstream of valve 14) and on the suction side (upstream of the separator tank)

💭 Think About

• If item "1" shows an unusually high vacuum, does that suggest the pump is struggling to draw liquid because of a restriction, or that there is too much back pressure on the discharge side? • Which choice directly addresses a possible flow restriction before the separator, and which choices deal with components that have already been opened, cleaned, or are on the discharge side? • After an internal cleaning and correct lineup, what is the most likely place for a remaining blockage that would still cause a high vacuum at the separator inlet?

✅ Before You Answer

• Identify whether gauge 1 is measuring conditions on the suction side or discharge side of the system • Eliminate any choices that would increase restriction or are unrelated to suction-side flow (like tightening a lid or closing a valve) • Focus on the option that would reduce suction-side restriction and is a normal first check after cleaning and reassembly

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