Hartzell HC-82XF-1 Owner's Manual page 220

(2) Refer to Figure 6-1. Each blade clamp has two
lubrication fittings. Remove both lubrication fitting caps
and one of the lubrication fittings from each blade
clamp.
NOTE:
(3) Use a piece of safety wire to loosen any blockage
or hardened grease at the threaded holes where the
lubrication fitting was removed.
WARNING:
CAUTION 1:
A-3594
MAINTENANCE PRACTICES
Propeller Owner's Manual
Certain old steel blade clamps may have only
one fitting, which must be carefully
re-lubricated without excessive pressure. Add
a small amount (1-2 fluid ounces) of grease
equally to each blade.
WHEN MIXING AEROSHELL GREASES
5 AND 6, AEROSHELL GREASE 5
MUST BE INDICATED ON THE LABEL
(HARTZELL P/N A-3594) AND THE
AIRCRAFT MUST BE PLACARDED TO
INDICATE THAT FLIGHT IS PROHIBITED
IF THE OUTSIDE AIR TEMPERATURE IS
LESS THAN -40°F (-40°C).
USE HARTZELL PROPELLER
APPROVED GREASE ONLY. EXCEPT IN
THE CASE OF AEROSHELL GREASES
5 AND 6, DO NOT MIX DIFFERENT
SPECIFICATIONS AND/OR BRANDS OF
GREASE.
Lubrication Label
Figure 6-2
175
61-00-75
Page 6-6
Rev. 1 Jun/11