Hartzell HC-B3-2 Series Owner's Manual And Logbook page 176

WARNING:
(12) Secure the spring retainer and remove the retaining ring
that holds the spring retainer in place.
(13) Remove the spring retainer from the engine shaft and
beta valve.
(14) Remove the inner and outer springs from the engine
shaft and beta valve.
(15) Slide the beta valve's remaining assembly and push rod
spool out of the engine shaft toward where the propeller
had been mounted.
(16) Place all beta valve parts together, including the self
locking nut and spacer that were removed to allow the
removal of the propeller assembly.
INSTALLATION AND REMOVAL
Propeller Owner's Manual
TO AVOID INJURY, SPRINGS IN THE
ENGINE SHAFT ARE PRELOADED AND
MUST BE PROPERLY CONTROLLED
WHEN RELEASING THE SPRING
RETAINER.
139
61-00-39
Rev. 17 Apr/20
Page 3-76