Piper SENECA III - Brake System

PIPER
AIRCRAFT
CORPORATION
SECTION
7
PA-34-220T,
SENECA
III
DESCRIPTION
&
OPERATION
circuit
which
alows the
hydraulic
pump
to
be
activated
to
raise
the
landing
gear
when
the
gear
selector
is
moved
to
the
"UP"
position. Duringthe
pre-
flight
check,
be
sure
the
landing
gear
selector
is in
the
"DOW N"
position
and
that
the
th
roe
green
gear
indicator lights
are
illuminated. On
takeoft the
gear
should be
retracted
before
an
airspeed of
108
KlASisexceeded The
landing
gear
may
be
lowered
at
any
speed
up
to
L30
KlAS.
The
hydraulic
reservoir
for
landing
gear
operation.i-s
an
integral
part
of
the
gear
hydraulic
pump.
Access
to
the
combination
pump
and
reservoir
is
through
a
panel
in
the
nose
baggage
compartment.
For filling
instructions,
see
the
PA-34-220T
Service
Manual.
The
nose
gear
is
steerable
through
a
27 degree
arc
either
side of
center
by
use
of
a
combination of
full
rudder
pedal
travel
and
brakes.
A
gear
centering
spring,
incorporated
in
the
nose
gear
steering
system,
prevents
shimmy
tendencies.
A
bungee
assembly
reduces
ground
steering
clTort
and dampens
shocks
and
bumps
during
taxiing.
When
the
gear
is retracted,
the
nose
wheel
centers
as
it
enters
the
wheel
well,
and the
steeringlinkage
disengages
to
reduce
pedal
loads
in
flight. The
landing
light
turns
off autúmatically when
the
gear
is
retracted.
All
three
landing
gears
carry
6.00
x
6
tires.
The
nose
wheel has
a
6-ply
tire
and
the
main wheels
have
8-ply
tires.
For information
on
servicing
the
tires,
see
"Tire
Inflation" in
the
Handling
and
Servicing
Section
of this
handbook.
Struts
for
the
landing
gear
are
air-oil
assemblies.
Strut
exposure
should
be
checked
during
each
preflight
inspection.
If
a
need
for
service
or
adjust-
ment
is
indicated,
refer
to
the
instructions
printed
onthe
units.Should
more
detailed
landing
gear
service
information be
required,
refer
to
the
PA-34-220T
Service
Manuat
7.11
BRAKE
SYSTEM
Two
single-disc,
double
puck brake
assemblies,
one on
each main
gear.
are
actuated
by
toe
brake
pedals
mounted
on
both the
pilot's
and
the
copilot's
rudder
pedals.
A
brake
system
hydraulic
reservoir,
independent
of
the
landing
gear
hydraulic
reservoir,
is
located
behind
a
panelin
the
rear
top
of the
nose
baggage compartment.
Brake
fluid
should
be
maintained
at
the
level
marked
on
the
reservoir.
For further
information
sec
"Brake
Service"
in
the
Handling
and
Servicing Section
of
this
handbook,
ISSUED:
JANUARY
8,
1981
REPORT:
VB-lll0
REVISED:
FEBRUARY
10,
1984
7-11