LANCE II 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.
1.
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.
7-7.
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.
7-8.
ASSEMBLY OF NOSE GEAR
OLEO. (Refer to Figure
7-1.)
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).
Issued: 1/3/78
LANDING GEAR
AND BRAKE SYSTEM
1J10
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