Hartzell HC-D2MV20-3 Series Owner's Manual And Logbook page 75

(b) Remove the piston from the cylinder by sliding it away
from the cylinder and off the piston guide rods.
NOTE 1: When the hydraulic valve is attached to the
NOTE 2: The jack plate unit will be attached to the
(c) Align the clearance holes of the A-181 gasket with the
six mounting studs that protrude from the engine and
install the gasket flush against the engine case.
(d) Align the six cylinder mounting holes with the six
mounting studs that protrude from the engine case.
(e) Position the cylinder flush against the previously
installed gasket.
CAUTION 1:
CAUTION 2:
(f) Install one mounting nut (Table 3-1) on each of the six
studs to secure the hydraulic cylinder to the engine.
(g) Torque each nut in accordance with Table 3-2.
INSTALLATION AND REMOVAL
Propeller Owner's Manual
piston, the valve spool must be positioned
at either extreme of travel to allow air to
enter or escape from the cylinder and allow
movement of the piston by hand.
piston with a wire ring through the thrust
bearing interface with the piston.
CHECK THE HEIGHT OF THE STUDS
ABOVE THE INSIDE SURFACE OF
THE CYLINDER. THE HEIGHT OF THE
STUDS MUST NOT EXCEED 0.532
INCH (13.51 MM), OR THE PISTON
TRAVEL MAY BE LIMITED AND MAY
RESTRICT BLADE ANGLE TRAVEL. IF
THE STUDS ARE TOO LONG, REMOVE
THE CYLINDER AND GASKET AND
SHORTEN THE STUDS. REPEAT ALL
INSTALLATION STEPS.
THE HEIGHT OF THE STUDS ABOVE
THE INSIDE SURFACE OF THE
CYLINDER MUST NOT BE LESS
THAN 0.468 INCH (11.89 MM), OR THE
MOUNTING NUT WILL NOT HAVE
ENOUGH THREAD FOR PROPER
ENGAGEMENT.
140
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Nov/02