Uploaded December 2025 | Updated September 2026, 1 week ago

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how to avoid cavitation in Boeing B787 hydraulic system

The hydraulic reservoirs supply pressurized hydraulic fluid to the hydraulic
pumps. The reservoirs also get the return hydraulic fluid from the airplane



- The hydraulic reservoir is a bootstrap type

• Called “boot strap” type reservoir

• Keeps positive head pressure head for pumps to avoid cavitation

• Accumulators maintain reservoir pressure.


- Capacity

• Left and right reservoir ~ 5 US gallons (19 liters)

• Center reservoir ~ 11 US gallons (42 liters).
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