Hartzell HC-E4 3 Series Owner's Manual page 111

(11) Safety all mounting bolts with 0.032 inch (0.81 mm)
minimum diameter stainless steel wire or equivalent
aircraft safety cable. (Two bolts per safety.)
(12) Decompress the external beta system and remove the
beta system puller.
CAUTION:
(13) Examine the beta ring to make sure that it is not in
contact with any engine components or mounting bolt
safety wire.
(a) If there is contact between the beta ring and any
engine components or mounting bolt safety wire,
consult a certified propeller repair station with the
appropriate rating.
(14) Install the beta feedback block assembly into the
beta linkage lever, in accordance with the airframe
manufacturer's instructions, if applicable.
(a) If the beta linkage lever is not installed correctly,
there could be interference between the beta linkage
lever and Fillet A, as shown in Figure 3-6. Refer to
Figure 3-6 and Figure 3-7.
1 If there is interference at Fillet A, make a
chamfer in the beta linkage lever to clear
Fillet A, as shown in Figure 3-6. The maximum
radius in Fillet A as manufacturered is 0.015 inch
(0.38 mm).
CAUTION:
(15) Install the beta feedback block assembly into the beta
ring, if applicable. Refer to Figure 3-7.
INSTALLATION AND REMOVAL
Propeller Owner's Manual
THE BETA RING MUST NOT CONTACT
ANY ENGINE COMPONENT OR
MOUNTING BOLT SAFETY WIRE. THE
BETA MECHANISM FEEDBACK COULD BE
DAMAGED IF IT CONTACTED ANY STATIC
ENGINE COMPONENT WHILE ROTATING.
FIT THE BETA FEEDBACK BLOCK
ASSEMBLY IN THE BETA RING
WITH A MINIMUM SIDE CLEARANCE OF
0.001 INCH (0.03 mm). REFER TO FIGURE 3-6.
147
61-00-47
Rev. 17 Sep/20
Page 3-21