Maintenance Practices
61-00-40
Page 6-6
Rev. 2 Jun/12
Propeller Owner's Manual
140
B. Lubrication Procedure
CAUTION:
FOLLOW LUBRICATION PROCEDURES
CORRECTLY TO MAINTAIN AN ACCURATE
BALANCE OF THE PROPELLER
ASSEMBLY.
(1) 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.
(2) Use a piece of safety wire to loosen any blockage
or hardened grease at the threaded holes where the
lubrication fitting was removed.
WARNING:
WHEN MIXING AEROSHELL GREASES 5
AND 6, AEROSHELL GREASE 5 MUST BE
INDICATED ON THE LABEL (HARTZELL
PROPELLER INC. 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).
CAUTION:
USE HARTZELL PROPELLER INC.
APPROVED GREASE ONLY. EXCEPT IN
THE CASE OF AEROSHELL GREASES
5 AND 6, DO NOT MIX DIFFERENT
SPECIFICATIONS AND/OR BRANDS OF
GREASE.
(4) Aeroshell greases 5 and 6 both have a mineral oil base
and have the same thickening agent; therefore, mixing of
these two greases is acceptable in Hartzell propellers.
(5) A label (Hartzell Propeller Inc. P/N A-3494 is normally
applied to the propeller to indicate the type of grease
previously used (Figure 6-2).
(a) This grease type should be used during relubrication
unless the propeller has been disassembled and the
old grease removed.
(b) Purging of old grease through lubrication fittings is
only about 30 percent effective.
(c) To completely replace one grease with another, the
propeller must be disassembled in accordance with
the applicable overhaul manual.
Summary of Contents for HC-D2MV20-3 Series
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