Adjusting The Propeller Governor; Propeller And Governor Adjustment; Rigging The Engine Controls - Beechcraft TRAVEL AIR 95 Shop Manual

This valve is not adjustable; however particles of 1. The air supply valve control
cable should
be
metal
or other foreign
matter lodged between
the
attached
to the
reservoir
air supply valve
so
that
ball and seat will result in a drop in oil pressure.
the
valve operating lever closes completely
without
It is advisable
to
disassemble, inspect, and clean
the cable
stopping
short against
the
cable
mounting
the
relief
valve
if
excessive
pressure
fluctuations in
the
cabin.
are noted.
2. The cycling control cable should be attached
to
the
cycling
valve
so
that the
control
arm
can operate
ADJUSTING THE PROPELLER GOVERNOR
to the
extreme
limits
of
the cycling
valve. The cable
handle in
the
"IN" position should have a 1/4 inch
The propeller governor
can be adjusted
for a
high
cushion from
the
cable mounting in
the cabin
to
and low rpm setting
and
a
feathering adjustment. insure
the
cycling valve is in
the
fully closed
posi-
The high rpm adjustment must be checked while
the tion.
aircraft is in flight. Observe
the
take-off
rpm
to
see if it
exceeds
the
redline
figure. If excessive rpm b. Air Pressure Regulator (See Figure 3-29).
is observed, land
the
plane and adjust
the
high rpm
screw inward
to
reduce
the
rpm
to the
redline Regulator gages
will not register unless
the
air
figure.
The high rpm
adjustment
screw is located
supply
valve is open. With
the
air supply valve in
at
the
rear of
the governor just
forward of
the
speed
the open position
observe
the
gages, if
the
gages do
adjusting control lever. One
complete revolution of not
correspond
to
the
following
table,
reset
the
the
screw reduces
the
propeller
rpm by approxi-
regulator
to agree to this
table,
mately
30 revolutions.
INLET PRESSURE (PS1) REGULATED PRESSURE
The low rpm adjustment is made while
the
aircraft
(PSI)
is on
the
ground. To make
the
adjustment, pull
the
propeller lever
back against
the
detent and observe
3000
17, 0
the
rpm setting.
If the
rpm varies
from
the
specified
2500 18.0
low rpm setting
of 2000 rpm,
the
low rpm
setting 2000
19.0
must be
adjusted. The
low rpm adjustment is made 1500 20.25
on
the
detent rod which is located
behind
the instru-
1000 21.5
ment
panel on
the
governor
control
linkage.
To 750 22.75
increase
the
setting,
lengthen
the
rod;
to
decrease 500
24.0
setting
shorten
the
rod. 250 25. 5
The pressure regulator may be
adjusted
by loosen-
In adjusting
the
feathering action,
pull
the
control
ing
the locknut on
the
pressure
regulator and
turn-
back
through
the
detent
and observe
the
point
at
ing
the
screw clockwise
to
increase pressure and
which
the
rpm setting begins
to
fall
off sharply,
then
counterclockwise
to
decrease pressure,
bring
the
propeller back
to
high rpm. The point at
which propeller
feathering
starts
should
be at 1800
rpm. If adjustment is required
turn the
square-head
screw on
the
end of
the
governor
control
shaft inward
or outward
to
correct
the
setting.
One half revolution
of
the
screw inward
will
lower
the
feathering
rpm
approximately 100 revolutions.
PROPELLER AND GOVERNOR ADJUSTMENT
For high and
low
pitch adjustments, service,
over-
haul
and
maintenance procedures
refer
to the
man-
ufacturers applicable FAA Approved
Propeller
Man-
uals.
RIGGING THE ENGINE CONTROLS
Rig
the
propeller
governor,
mixture
and throttle
<
t
2
controls
to
travel
from stop
to
stop at
the
engine
end with approximately
3/32
inch
spring-back
at
the
pedestal end.
TEST AND ADJUSTMENT FOR COMPONENTS
OF
1. Lock Nut
LIGHT
WEIGHT
"RESERVOIR"
DEICER
SYSTEM
2.
Pressure Adjusting
Screw
a.
Control
Cables. Figure
3-29.
Air
Pressure
Regulator
3-47