1
½”
.3750”
.3740”
1
¾”
.4365”
.4375”
The problem that presents itself here is the probability of the various key seat widths encountered
when installing a propeller.
A. Place the key into the key seat on the shaft. Be sure the key is correctly oriented.
B. Slide the propeller up onto the shaft, making sure the key does not ride up and forward within the
key seat. The propeller hub should position itself to the mark previously made. If the hub does not
align itself with the mark, the key has not been properly fit. Refit the key.
C. While holding the propeller in place, start the large nut
(Chamfered Side of Nut
towards
Propeller, see figure #13)
until hand tight to prevent movement and keep the propeller from
falling off.
D. Place a wood block between the blade and the ground, then tighten the large shaft nut. Install
and tighten the smaller jam nut, see figure #14
(Chamfered Side of Nut Away From
Propeller).
Insert and bend over the cotter pin. Remove the block of wood.
31-Open
Rigging Manual
Page:
7 of 15
Figure #13
Figure #14
Large propeller nut
. Install first with
chamfered side towards to propeller.
Chamfered side of
nut.
View of the
jam nut
. Install with the
chamfered away from the propeller.
After nuts is tight insert cotter pin to
prevent nuts from coming loose.
Total Task Time:
N/A
