Hartzell HC-B3-2 Series Owner's Manual And Logbook page 226

IMPORTANT:
CAUTION:
(5) Using the tank sprayer, apply a fine mist of the soap
solution to the surfaces of the downward facing blades,
and the hub, bulkhead, and slip ring around the
downward facing blades.
(a) Use a cloth or soft nylon brush to loosen dirt and
unwanted material on the surfaces where the soap
solution was applied, particularly on the inboard
surface of the counterweight clamp.
(6) Using clean potable water at low pressure, rinse the
surfaces where the soap solution was applied to remove
dirt, unwanted material, and soap residue.
(7) Use a clean dry cloth to dry the surfaces cleaned in the
previous steps.
(8) Rotate the propeller so that the next blade(s) to be
cleaned are pointing downward, then repeat
steps 5 thru 7.
(a) Repeat steps 5 thru 8 until all blades have been
cleaned and dried.
(9) Let the propeller dry.
(10) Using a spray applicator, apply a thin, even layer of
A-6741-345 anti-corrosion compound to all surfaces of
the hub, slip ring, bulkhead, and particularly the surfaces
of the counterweight clamp.
(a) Use a clean cloth to wipe excess A-6741-345
anti-corrosion compound from any areas where
there is puddling, dripping, or excessive application.
(11) Install the spinner dome in accordance with the
Installation and Removal chapter in this manual.
MAINTENANCE PRACTICES
Propeller Owner's Manual
WHEN PERFORMING STEPS 5 THRU 7,
THE BLADE(S) TO BE CLEANED
MUST POINT DOWNWARD. THIS WILL
PREVENT THE SOAP SOLUTION AND/OR
CONTAMINANTS FROM FLOWING INTO
THE HUB/BLADE SEAL AREA.
DO NOT LET THE SOAP SOLUTION
DRY ON THE SURFACES OF THE HUB,
BULKHEAD, OR SLIP RING.
139
61-00-39
Rev. 17 Apr/20
Page 6-6