Propeller Owner's Manual
136
INSTALLATION AND REMOVAL
61-00-36
Page 3-43
Rev. 2 Feb/17
D. Pressure Control Unit Adjustment
(1) After installation of the propeller, pressure control unit,
and governor, the pressure control unit will require
adjustment for correct operation of the propeller.
(a) The adjustment instructions assume that the
governor RPM control has been connected to
the cockpit control and that any maximum RPM
adjustments at the governor or cockpit control have
been completed.
(2) The distance that the plunger of the pressure control unit
is permitted to extend out of the pressure control unit
body must be adjusted and secured.
(a) The procedure used to determine this distance will
be discussed in the section, “Plunger Stop Screw
Adjustment” in this chapter.
(b) This section discusses the additional parts outside
the basic pressure control unit that are required and
the geometries associated with these parts.
1 The pressure control reversing propeller system
in Figure 2-2, “Pressure Control Reversing
Propeller System” in the Description and
Operation chapter of this manual shows a bolt or
set screw and a locking nut attached to a secure
feature to restrain the amount of movement of
the plunger away from the pressure control unit
body.
a If the plunger extends farther out of the
pressure control unit body, it will lower the
oil pressure permitted to reach the propeller
during normal governed flight.
(1) Reducing this distance will increase
the oil pressure to the propeller during
normal governed flight.
