EP Equipment CQD16, Service Manual

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221
REV. 07/2016
SERVICE MANUAL - MAST
A
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Use suitable hose clamps to avoid cylinder
deformation caused by severely tight hose
clamp.
Carry out the maintenance work in a clean
environment to prevent impurities from
entering into cylinder, causing cylinder
damage.
During the installation, hydraulic oil of
the same specifications must be used for
cleaning or lubrication.
CAUTION
Full Free Middle Cylinder
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Secure the cylinder to hose clamp and gently
clamp the cylinder bottom;
Unscrew the cylinder cap (4, Figure 90616)
with cylinder wrench;
Remove the dust ring (2), O-ring (3) from the
cylinder cap;
Pull out the piston rod (1) from the cylinder
tube (6);
If the piston rode or cylinder tube is damaged,
please replace the entire cylinder.
If the seals are aged or damaged, please
replace the complete set of seals.
CAUTION
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Remove the support ring (5), seal (8) and
cover plate (7) from the piston rod;
Clean with hydraulic oil of the same speci
fi ca-
tions;
Replace the problem parts and assembly in
reverse steps.
A4-4.3 Cylinder Installation
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Install the cylinder according to the reverse
order of removal according to A4-4.1;
Add hydraulic oil of the same specifications
into the tank, see Section 2.2.3;
Pull out emergency stop switch and turn on
the key switch;
Repeat Lift - Lower cylinder to discharge the
air within the tubings and cylinder;
Check the hydraulic oil level and make sure
that the liquid is at standard level.