Cessna 182 1978 - Governor

MODEL 182 & T182 SERIES SERVICE MANUAL
NOTE increase or decrease blade pitch. The
propellers
used on these aircraft
require
Make
sure bushing hole in ring gear support,
governors which "sense" in a certain
man-
marked "O", is
assembled adjacent
to "O"
ner. "Sensing"
is determined
by the type
mark
on crankshaft
flange
bushing.
The
pilot
valve installed
inside
the
governor.
starter
ring gear
must be
located correctly
Since the
basic governor
may
be set to
to
assure
proper
alignment
of the
timing
"sense"
oppositely,
it
is important
to
mark on
the ring
gear.
ascertain
that the
governor
is correct
for
the propeller being used.
d. Clean propeller
hub cavity and mating
surfaces
of propeller hub and ring
gear support. 13-12. TROUBLE
SHOOTING. When trouble shoot-
e.
On the standard 2 bladed
propeller, lightly
ing the propeller-governor
combination,
it is recom-
lubricate new
O-ring (9) and crankshaft
pilot with
mended that a governor
known to be in good condition
clean engine oil,
and install O-ring in
the propeller be
installed to check whether
the propeller or the
hub.
governor is
at fault. Removal
and replacement,
rig-
f. Align
propeller mounting
bolts with
proper holes
ging, high-speed
stop adjustment,
desludging
and re-
in engine
crankshaft flange,
and slide
propeller care-
placement
of the governor
mounting gasket
are not
fully over
crankshaft
pilot until
bolts can be
started
major
repairs and
may be accomplished
in
the field.
in
crankshaft
flange bushing.
Position
propeller
Repairs to
propeller governors
are
classed as
pro-
blades to extend
thru aft
spinner bulkhead
with
ample
peller major
repairs in
Federal Aviation
Regulations,
clearance.
which also define
who may
accomplish
such repairs.
g. Tighten bolts evenly, and work propeller aft on
crankshaft
flange.
Torque bolts
per figure
13-1.
13-13.
REMOVAL.
h. Install
.040 inch diameter corrosion
resistant
safety wire through bolts in pairs.
i. Adjust
alternator
drive
belt tension
as outlined
in Section
16.
j. Install spinner (1), using spacers as required.
NOTE Be sure magneto is grounded before turning
propeller
When replacing optional three bladed propeller
assembly
(2), apply
Y8560 Polyurethane
Film
a. Remove
cowling and
engine baffles
as required
(3M
Company),
a
minimum
of one
wrap on
for
access
to governor.
propeller
hub (8),
then as
required
to obtain
b.
Disconnect
governor
control
from governor.
a snug fit of forward support (9) to propeller
hub (8). NOTE
Note EXACT
position of all washers
so that
13-9. TIME BETWEEN OVERHAUL (TBO). Pro- washers may be installed in the same posi-
peller
overhaul shall coincide
with engine
overhaul,
tion on reinstallation.
but shall not exceed
limits specified in
McCauley
Service Bulletin 137 and all other revisions and c. Remove nuts and washers securing governor to
supplements thereto. Refer to Sections 11 & 11A engine and pull governor from mounting studs.
for engine overhaul
periods.
d. Remove gasket from
between governor and
en-
gine mounting pad.
13-10. GOVERNOR.
13-14. INSTALLATION.
13-11. DESCRIPTION.
The propeller governor
is a
single-acting, centrifugal
type, which boosts oil pres-
sure from
the engine and
directs it to
the propeller
where the
oil is used to increase
blade pitch. A
single-acting
governor
uses oil pressure
to
effect a
pitch change in one direction only; a pitch change in
the
opposite
direction
results
from
a combination
of
Be sure
magneto
is grounded
before
turning
centrifugal
twisting
moment
of rotating
blades
and
propeller
compressed
springs.
Oil pressure
is
boosted in
the
governor by a gear type oil pump. A pilot valve, fly a. Wipe governor and engine mounting pad clean.
weight and speeder
spring act together to open and
b. Install a new gasket on the mounting studs.
In-
close governor
oil passages as required to maintain stall
gasket with raised surface of the gasket screen
a constant engine
speed.
toward
the governor.
c.
Position governor
on
mounting
studs, aligning
NOTE
governor
drive splines
with splines in the
engine and
install mounting
nuts
and washers.
Do
not force
Outward physical appearance of specific spline engagement. Rotate engine crankshaft slightly
governors is the same, but internal parts and splines will engage smoothly when properly
determine whether it uses oil pressure to aligned.
13-7