Propeller Owner’s Manual
140
INSTALLATION AND REMOVAL
61-00-40
Page 3-50
Rev. 3 Feb/14
CAUTION:
THE DRAIN LINE SHOULD BE AS
SHORT AS POSSIBLE.
6 Install a 0.37 to 0.50 inch (9.5 to 12.7 mm) inside
diameter (ID) flexible hose with a minimum
pressure capacity of 150 psi from the engine
drain to the threaded hole in the valve closest to
the propeller (drain port).
(2) Adjusting Travel on Hydraulic Unit Without Governor.
Refer to Figure 3-9.
(a) Remove the low pitch stop screw from the valve link.
(b) Loosen the screws to free the vernier control.
(c) Pull the piston out with the counterweights, until the
piston guide arms extend a maximum of 0.50 inch
(12.7 mm), for a 0.125 inch (3.17 mm) diaphragm,
from the outer diaphragm ring B-120.
(d) On Lycoming engines, the clearance between the jack
plate and any portion of the hub or spinner ring should
be no less than 0.063 inch (1.59 mm) and no greater
than 0.125 inch (3.17 mm). On Continental engines,
the clearance between the jack plate and any portion
of the hub or spinner ring should be exactly 0.125
inch (3.17 mm).
CAUTION:
DO NOT ALLOW THE HUB NUT TO
ENGAGE LESS THAN FIVE FULL
THREADS.
(e) Adjust the spacers behind the rear cone to obtain
the applicable clearance. Do not allow the hub nut to
engage less than five full threads. Restrict the travel
to maintain no less than clearance.
(f) Move the valve control until the valve spool touches
the low pitch stop on the link.
NOTE: The spool should extend 1.31 inches
(33.3 mm) beyond the valve casting. Bend
the stop as necessary to achieve this
setting.
(g) Set the cockpit propeller control to 0.125 inch
(3.17 mm) from the bottom of travel.
(h) Clamp the vernier control with clamp screws.
Summary of Contents for HC-D2MV20-3 Series
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