Hartzell HC-E4 3 Series Owner's Manual page 221

CAUTION 4:
(8) Pump a maximum of 1 fl. oz. (30 ml) of grease into the
lubrication fitting, or until grease emerges from the hole
where the lubrication fitting or hole plug was removed -
whichever occurs first.
NOTE: It may be necessary to use a right angle
coupler such as TE559 or equivalent, on the
grease gun to access the lubrication fittings.
Refer to Figure 6-3.
(a) For all tractor or pusher propellers with clockwise
(standard) rotation when viewed from BEHIND the
aircraft, the lubrication fitting is in the ENGINE-SIDE
hub half.
(b) For all tractor or pusher propellers with counter-
clockwise (backward) rotation when viewed from
BEHIND the aircraft, the lubrication fitting that is in
the CYLINDER-SIDE hub half.
Right Angle Coupler for Grease Gun
MAINTENANCE PRACTICES
Propeller Owner's Manual
OVER LUBRICATING AN ALUMINUM HUB
PROPELLER CAN 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.
Figure 6-3
147
61-00-47
Rev. 16 May/20
Page 6-11