Hartzell HC-D2MV20-3 Series, Owner'S Manual And Logbook

Page: 82 / 204

Propeller Owner’s Manual
140
INSTALLATION AND REMOVAL
61-00-40
Page 3-18
Nov/02
(6) If there is interference, continue with the following steps:
(a) Identify a dimension required to space the clamp
assembly and valve assembly apart and reestablish
positive clearance.
(b) Increase the thickness of the reverse stop with the
dimension required to reestablish positive clearance
between the clamp assembly and the valve assembly.
1 Refer to Table 3-3 for a listing of reverse stop
thicknesses.
2 Select a single spacer with the required thickness.
(c) Twist the counterweights toward high pitch to move
the push rods and sleeve toward the engine are far as
they will travel.
(d) Loosen and unthread the hub nut from the engine
shaft.
NOTE: This will pull the propeller away from the
engine and allow the push rods to slide out
of the guide lugs on the hub.
(e) Allow the jack assembly push rods to completely slide
out of the guide lugs.
(f) Turn the jack plate unit until the pitch change forks
disengage from the pitch change blocks.
(g) Install the reverse stop with the new dimension
thickness onto the sleeve and push rod.
(h) Position the jack plate unit and the hub to engage the
pitch change blocks.
(i) Position the blades so the forks can slide onto the
pitch change blocks.
(j) With the propeller blades at high pitch, align the push
rods and sleeves with the guide lugs by rotating the
propeller hub or jack plate unit relative to each other.
(k) Slide the push rods and sleeves through the guide
lugs by rotating the blades to reverse pitch.