MD Helicopters MD900 with PW206E, Flight Manual

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CSP–900RFM206E–1
ROTORCRAFT FLIGHT MANUAL
MD900 With PW 206E
Handling Servicing
and Maintenance
Original
8–26
Hydraulic System:
NOTE
: The hydraulic system may be serviced by using either the optional hydraulic
system hand pump or a hydraulic mule. For servicing the system using the mule,
refer to the RMM, Section 29–00–00.
If the hand pump is not installed, the hydraulic fluid level must monitored closely
and serviced before leaving an area where proper facilities are located.
The hand pump (optional) provides capability to pump fluid into the manifold/res,
ervoir without the need of a ground support unit. The hand pump is mounted
next to the GSE panels on the transmission deck.
A sight glass indicates when the fluid is at the 0.3 qt level. On the underside
of the cover, a can opener provides a clean means of opening new cans of hydraulic
fluid.
A manually operated selector valve is mounted internally in the housing. The
selector valve lever provides for selection of system 1 or system 2 servicing.
The drive handle folds and clips against the reservoir housing for storage. When
in use, the handle extends through the open access panel, providing a convenient
means of operation.
NOTE
: The following servicing procedure applies to aircraft equipped with the optional
hydraulic system hand pump.
Do not mix different specification hydraulic fluids. Ensure that only
MIL–H–83282 fluid is used to service the hydraulic systems for
all helicopter operations in temperatures above –40
°
F.
The intentional mixing of approved hydraulic oils is not permitted.
Servicing − Hydraulic hand pump:
Open transmission access panel (Ref. Figure 8−6 and Figure 8−7).
Verify that hydraulic fluid is low by checking oil level on hand pump reservoir
fluid level sight gauge
(Ref. Figure 8−16).
Unscrew the reservoir cover to remove.
Add appropriate amount of hydraulic oil.
Replace cover.
Servicing − Hydraulic system:
Verify that pump reservoir has fluid; replenish if necessary.
Select system to be serviced by using the selector valve lever on the hand
pump (Ref. Figure 8−16).
Disengage handle from stowed position.
Rotate handle in direction of arrow (CW).
Servicing is complete when the hydraulic manifold fluid level sight gauge
is at the correct level.
Stow handle.
CAUTION