Piper Cherokee Six - Page 310

PIPER
CHEROKEE
SIX
SERVICE
MANUAL
k. To
remove
the orifice
tube (30),
remove
the
large locknut
(16)
and lock
washer
(19)
from
the top of
the cylinder.
Pull the tube
from the
cylinder.
l. The
orifice
plate
(31) is
removed
from
the bottom
of
the orifice
tube
by releasing
the snap ring
(32) that
holds the
plate in
position.
m. To remove
the
piston tube
plug
(40) with
"O" ring
(41) located
in the
lower
end of
the tube,
remove
the bolt
assembly
and
insert
a rod
up through
the
hole in
the body
of the
fork (42).
Push
the plug
out through
the
top of
the tube.
6A-7.
CLEANING,
INSPECTION
AND
REPAIR
OF NOSE
GEAR
OLEO.
a.
Clean all parts
with a suitable
dry type
cleaning solvent.
b.
Inspect the
landing
gear oleo
assembly component
for the following:
1. Bearings
and
bushings
for
excess
wear,
corrosion,
scratches
and overall
damage.
2. Retaining
pins for
wear and
damage.
3.
Lock rings
for cracks,
burrs,
etc.
4. Cylinder
and orifice
tube for
corrosion,
scratches,
nicks and
excess wear.
5.
Upper
and lower
cylinder
bushings
loose or
turning
in cylinder.
6.
Orifice
plate
for
hole
restriction.
7.
Fork
tube for
corrosion,
scratches,
nicks,
dents
and misalignment.
8.
Air
valve general
condition.
c.
Repair
of the oleo
is limited
to smoothing
out minor
scratches,
nicks
and
dents
and
replacement
of
parts.
6A-8. ASSEMBLY
OF NOSE GEAR
OLEO. (Refer
to Figure 6A-1.)
a. Ascertain
that
parts are cleaned
and
inspected.
b. To install
the piston
tube plug
(40), first
lubricate the
tube plug
and "O" ring
(41)
with
hydraulic
fluid
(MIL-H-5606A)
and
install
the
"O" ring
on the
plug.
Lubricate
the
inside wall
of the
tube
(39); insert
the
plug into
the
top of
the tube
and push
it to
the fork
end. Align
the bolt
holes
of the
fork, tube
and plug,
and
install bolt
assembly.
c. If desired,
cement
a cork in the
hole in the
bottom of
the fork body
to prevent
dirt
from
entering
between
the
fork and
tube.
d. To assemble
the components
of the orifice
tube (30), insert the
orifice plate (31)
into
the bottom
of the tube,
with the
countersunk
side of the orifice
hole exposed.
Secure
the
plate with
the snap ring
(32), lubricate
and install
the "O" ring
(28) on the
upper end of
the
tube.
e. Insert
the orifice
tube (30)
up through
the bottom
of the cylinder
(23).
With the
tube exposed
through
the top of
the cylinder,
install the lock
washer (19)
and insert
roll pin
(18) through
the lock
washer into
the piston.
Install the
tube locknut
(16) finger
tight at
this time.
f.
The fork
(42)
and tube
(39) assembly
may
be assembled
by installing
the
tube
components
on
the tube.
In order, slide
onto the
tube, the snap
ring (38),
washer (37),
lower bearing
(34) with
outer and inner
"O" rings
(33 and 35)
and upper
bearing (29).
Align
the
lock pin holes
in the upper
bearing with
the pin holes
in the piston
tube (39)
and install
pins (27).
Revised: 7/29/77
LANDING
GEAR AND BRAKE SYSTEM
2C10