Propeller Owner's Manual
136
INSTALLATION AND REMOVAL
61-00-36
Page 3-35
Rev. 2 Feb/17
B. Preparing the Governor Mounting Pad on the Engine.
(1) General
(a) If a governor only was previously installed on the
engine, the four studs installed in the governor
mounting pad will be too short for the required
installation of the pressure control unit between the
governor and the engine.
1 Figure 3-13, View A, shows the governor
mounting pad on the engine with short studs
installed.
2 Figure 3-13, View B, shows the governor
mounting pad on the engine with long studs
installed.
(b) The four long studs are Hartzell Propeller Inc. part
number A-3147-3.
1 The A-3147-3 studs have a 5/16-24UNF-3A
thread (fine thread) on one end and a
5/16-18UNC-3A thread (coarse thread) on
the other end and are approximately 2.6 inches
(66 mm) long.
(2) Using a locally procured stud installer/remover, remove
the four short studs.
(3) Using a plastic tool, remove any remaining gasket
material to make the governor mounting pad surface on
the engine flat.
