Shaver HD-12-H, Operator'S Manual

Page: 35 / 56

6 . Wear gloves, and use a sturdy seal pick to
remove cylinder cap seal (C9) from
cylinder cap (C7).
(C7) Cylinder Cap. (C9) Cylinder Cap Seal.
7 . Clean the seal groove in the cylinder cap
and place the new seal in hot (120°F) water
for ten minutes.
8 . Once the seal is pliable, squeeze the new
seal together making a banana shape.
Place one end of the seal into the cylinder
cap seal groove. Continue to push the seal
into the seal groove, holding the seal in the
groove from the bottom with one finger,
while continuing to push the seal down
from the top until the seal snaps in place.
IMPORTANT NOTICE
Care must be taken not to damage the new seal
while installing it. Do not use a sharp tool, such as a
screwdriver, to push the seal into place. A suitable
diameter impact socket with rounded edges can be
useful in pushing the seal into the cap groove.
(C7) Cylinder Cap. (C9) Cylinder Cap Seal.
9 . Once cylinder cap seal (C9) is in the
groove, double check for correct
orientation. The sharp edge of the seal
must be down (towards the threads inside
the cap).
10 . Lubricate the seal with clean hydraulic
fluid and slide the cap onto cylinder
piston rod (C3) from the
bottom .
IMPORTANT NOTICE
Do not slide the cylinder rod cap over the top of
the drive cylinder rod. The threads will damage
the new cylinder rod cap seal.
11 . Install piston guide (C10) and new
self-locking piston guide nut (C11), using
a 1-1/4” wrench to hold the piston guide
while installing the piston guide nut. Do
not over-tighten the self-locking nut.
Piston guide (C10) must be able to rotate
on cylinder piston rod (C3).
12 . Install cylinder piston rod (C3) assembly
into drive cylinder tube (C2).
NOTE : Care must be taken during installation
to prevent scoring of cylinder piston rod (C3) or
the inside of drive ram cylinder tube (C2).
13 . Apply paste-type thread sealant (T12) on
drive cylinder tube (C2) external threads
and install cylinder cap assembly (C7).
Tighten the cap securely.
IMPORTANT NOTICE
Hydraulic system fittings that require a thread
sealant must be installed with a paste-type
sealer only. Do not use a tape-type sealer such
as Teflon Tape, as this can contaminate the
system and voids the valve warranty.
14 . To install drive cylinder assembly (C1) in
the Post Driver, follow the instructions in
the Main Carriage Channel Assembly
section.
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