clutch system. The engine-mounted hydraulic backup pump delivers 7.1 gpm
of flow at a system pressure of 1550 psi with the engine operating at
These components of the hydraulic system support both the primary and
backup hydraulic system operations. They are shown in Figure 9. The
following paragraphs describe each component:
o Hydraulic Reservoir - has a 13 gallon capacity and stores the
hydraulic system fluid not required for system operation.
o Suction Line - passes hydraulic fluid to the main or backup
o Ball Valve - controls the flow of hydraulic fluid through the
suction line. You must manually operate it, and a crew member
must open it before main or backup hydraulic pumps are operated.
o Return Line - passes hydraulic fluid back to the reservoir from
An in-line, 10-micron filter removes particles
from the returning hydraulic fluid.
o Breather Cap - vents reservoir pressure to the atmosphere.
o Filler Cap and Tube - permits ease of hydraulic fluid refill. A
strainer housed within the tube prevents entry of contaminants.
o Fluid Level Transmitter - monitors the level of the hydraulic
fluid in the reservoir and emits an electronic signal to the
level gage on the hydraulic control panel.
The operation is
similar to that of a vehicle's fuel gage.
o Fluid Temperature Transmitter - monitors the temperature of the
hydraulic fluid in the reservoir and emits an electronic signal
to the temperature gage on the hydraulic control panel.