Hartzell HC-E4 3 Series Owner's Manual page 148

(2) If the propeller is equipped with an ice protection
system that uses components supplied by Hartzell
Propeller Inc., applicable instructions and technical
information for the components supplied by Hartzell
Propeller Inc. can be found in Hartzell Propeller Inc. Ice
Protection System Manual 180 (30-61-80).
(3) Propeller ice protection system components not
supplied by Hartzell Propeller Inc. are controlled by the
applicable TC or STC holder's Instructions for Continued
Airworthiness (ICA).
(4) Disconnect the engine beta linkage and beta feedback
block assembly from the beta ring in accordance with the
airframe manufacturer's instructions.
(a) Remove the snap ring that retains the beta feedback
block assembly to the beta linkage. Refer to
Figure 3-7.
(b) Remove the beta feedback block assembly. Refer to
Figure 3-6.
(5) Use the beta system puller CST-2987 to compress the
beta system spring and pull the beta ring toward the
propeller to expose the propeller mounting bolts and
washers. Refer to Figure 3-4.
INSTALLATION AND REMOVAL
Propeller Owner's Manual
147
61-00-47
Page 3-58
Rev. 17 Sep/20