SERVICE
CYLINDER SERVICE
The
cylinders are designed
to
be
reliable and easy
to
service.
If
a cylinder should malfunction during
the
warranty period, return the
complete
cylinder assem-
bly, without disassembling,
to
your
authorized service
department
or
contact your authorized service depart-
ment
for
instructions. Unauthorized disassembly of a
cylinder in
the
warranty period will VOID WARRANTY.
CYLINDER REPAIR PROCEDURE -
MODEL 416 LOADER
FOLLOW
THESE
PROCEDURES TO REPAIR LIFT
AND
BUCKET
CYLINDERS
ON
MODEL
416 LOAD-
ERS:
Remove
the
snap ring (13)
from
the
inside
of
the
tube
on
the
rod end
and
pull
the
rod assembly out
of
the
tube.
Be
careful not
to
scratch the rod when removing
the
snap
ring.
Tum
the
nut (5) off of
the
rod (3) and remove the
piston (4) and
the
seal retainer (2).
Remove all seals and wash all parts in solvent
and
blow
dry
with air. KEEP PARTS CLEAN!
Inspect
the
cylinder tube
anq
rod
for
roughness,
scratches
or
scoring. Small I scratches
may
be
removed with
very
fine crocus qloth. Replace cylinder
tube
or
rod
if
roughness is exqessive.
SEALS
WILL
NOT
GIVE
SATISFACTORY
S~RVICE
LIFE
WHEN
USED WITH ROUGH CYLINDER TUBE
OR
ROD.
Install U-ring (8)
to
inside groove of seal retainer (2)
with the lips in. Slide
the
bac~-up ring (12) and
the
O-ring (7) into
the
outside groo~e on
the
seal retainer.
Place
the
wiper ring (9) in
the
g~oove
on
the
large end
of
the
seal retainer. Lubricate ttjle seals
and
slide
the
seal retainer (2) onto the rod.
Install
the
O-ring (6) into the Iinside groove
of
the
piston (4) and
the
piston seal ! (10) into
the
outside
groove
of
the
piston (4). Lubricate the O-ring and slide
the piston
on
the rod. Tum
the
put (5)
on
the
rod and
torque
to
150-160
lbs.
-ft.
torqu$.
Lubricate the
seals
and slide t~e rod assembly into
the tube,
and
install the snap ~ng (13). Assembly is
complete.
11
\
CD4185
10
3 7 8
5 4 2 12 13
2. Seal retainer
3. Rod
4.
Piston
5.
Locknut
6. O-Ring
7. O-Ring
8. U-Ring
9.
Wiper
ring
1
o.
Piston seal
11. Tube
12. Back-up ring
13.
Snap
ring
Figure 36. Cylinder Repair - Model 416
22
F-8297 (1-94)
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