Hartzell HC-82XF-1 Owner's Manual page 221

(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 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.
CAUTION 1:
CAUTION 2:
CAUTION 3:
(6) Pump grease into each blade clamp
until grease emerges from the hole of the removed
lubrication fitting.
NOTE: Lubrication is complete when grease emerges
in a steady flow with no air pockets or
moisture, and has the color and texture of the
new grease.
(7) Reinstall the removed lubrication fitting on each clamp.
MAINTENANCE PRACTICES
Propeller Owner's Manual
IF A PNEUMATIC GREASE GUN IS USED,
EXTRA CARE MUST BE TAKEN TO AVOID
EXCESSIVE PRESSURE
OVER LUBRICATING A STEEL HUB
PROPELLER MAY CAUSE THE
GREASE TO ENTER THE HUB CAVITY,
LEADING TO EXCESSIVE VIBRATION
AND/OR SLUGGISH OPERATION.
THE PROPELLER MUST THEN BE
DISASSEMBLED TO REMOVE THIS
GREASE.
GREASE MUST BE APPLIED TO ALL
BLADES OF A PROPELLER ASSEMBLY AT
THE TIME OF LUBRICATION.
175
BUILDUP.
lubrication
61-00-75
fitting
Page 6-7
Rev. 1 Jun/11