TM 5-3895-373-34
E.
ASSEMBLE - Continued.
3.
REASSEMBLE PISTON ROD.
Do not clamp piston rod against metal jaws
in vise. Use vise jaw caps between vise jaws
and piston rod. Damage to chrome surface
of piston rod can result.
a.
Clamp piston rod (3) in a bench vise on
square end. Pad vise jaws with vise jaw
caps.
New seals and preformed packings are
distorted
during
installation.
Allow
a
minimum
of
one
hour
for
seals
and
preformed packings to conform to original
shape before installing cylinder head and
piston on rod. Bypass leakage can result
from poor installation.
b.
Allow one hour for seals and preformed
packings to conform to original shape.
Hydraulic oil can be moderately flammable
and can be an irritant to the skin, eyes, and
respiratory
system.
Avoid
prolonged
exposure. Eye protection and rubber gloves
must be worn when working with hydraulic
oil.
c.
Lubricate
piston,
cylinder
head,
and
preformed packing with clean hydraulic oil.
d.
Install cylinder head (1) onto piston rod (3).
Slide cylinder head down length of piston
rod.
Be
careful
not
to
damage
preformed
packings when sliding over threads. Sharp
edges
of
threads
can
cut
or
damage
preformed packings. Damaged preformed
packings will cause leakage and affect
performance.
e.
Install preformed packing (7) onto piston
rod. Ensure preformed packing seats in
groove on rod (3).
f.
Slide piston (5) onto piston rod (3).
g.
Have a second person support unclamped
end of the piston rod and install self-locking
hex nut (6) onto threaded end of rod.
Tighten to 200 lb-ft (271 N•m) using socket
wrench adapter.
h.
Remove piston rod from bench vise.
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