INSTALLATION AND REMOVAL
61-00-75
Propeller Owner’s Manual
175
Page 3-71
Rev. 1 Jun/11
CAUTION
:
TO MAINTAIN PROPER BLADE ANGLES,
REINSTALL THE PISTON IN THE SAME
POSITION AS WHEN IT WAS ORIGINALLY
ASSEMBLED. INDEX NUMBERS ON THE
PISTON AND THE GUIDE COLLAR ARE
PROVIDED TO MAKE SURE OF PROPER
POSITIONING.
(20) Locate and match up the index numbers (1 and 2 on
2-blade propeller; 1, 2, and 3 on 3-blade propeller) on
the piston ears with the corresponding index numbers on
the guide collar. Refer to Figure 3-20.
NOTE
: The index marks will be either impression-
stamped or drawn with a felt-tipped pen.
(21) Oil the surface of the cylinder and install the piston.
(22) Slide the piston onto the cylinder and pass the guide
rods through the collar bushing (Figure 3-20).
(23) Install the washer, check nut, and socket head cap
screw at the end of each guide rod (Figure 3-20).
(24) Connect the link arms to the piston (Figure 3-17).
(25) Install the link pin units.
(26) Install the link pin safety screws (Figure 3-17) and
tighten until snug.
(27) Safety the two screws together with 0.032 inch
(0.81 mm) minimum diameter stainless steel wire
(Figure 3-17).
(28) Carefully rotate the blades into feather position and
fasten the piston to the pitch change rod with the piston
nut (Table 3-1).
(29) Torque the piston nut. Refer to Table 3-2.
(30) Torque the low pitch stop nut against the guide rod.
Refer to Table 3-2.
(31) Remove the wires from the start lock brackets.
(32) Position the propeller on the start locks.
OBSOLETE PROPELLER MODELS. SEE COVER PAGE
WARNINGS AND SERVICE BULLETIN HC-SB-61-331
