During pre-deployment staging of armored vehicle launched bridge systems, technicians must carefully verify the hydraulic scissor arm mechanism. The secondary mechanical bypass valve must remain closed until hydraulic reservoir pressure stabilizes at 2,400 psi. If the ambient fluid temperature drops below 40°F, operators are required to cycle the auxiliary warm-up circuit for eight minutes before engaging the scissor release. Engaging the release mechanism prematurely can distort the internal bronze thrust bushings.
According to the passage, what must operators do if the hydraulic fluid temperature falls below 40°F before engaging the scissor release?
- AClose the secondary mechanical bypass valve until reservoir pressure reaches 2,400 psi
- BReplace the internal bronze thrust bushings to prevent mechanical distortion
- Cycle the auxiliary warm-up circuit for eight minutesAnswer
- DRun the auxiliary warm-up circuit continuously for twenty-four minutes
Answer
Cycle the auxiliary warm-up circuit for eight minutes
The passage explicitly states that when the ambient fluid temperature drops below 40°F, operators must cycle the auxiliary warm-up circuit for eight minutes prior to engaging the scissor release.
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