EP Equipment CPD30L1-B, Service Manual

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192
REV. 05/2020
SERVICE MANUAL - MAST
A
A1-4.2 Cylinder Maintenance
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.
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Secure the cylinder to hose clamp and gently
clamp the cylinder bottom;
Unscrew the cylinder cap (3) with cylinder
wrench;
Remove the dust ring (1), seal (2), O-ring (4)
and bushing (5) from the cylinder cap (3);
Pull out the piston rod (6) from the cylinder
tube (15);
Remove the support ring (8) and the piston (9)
from the piston rod;
Remove the O-ring (7), bushing (10),
rataining ring (11) and seal (12) from the
piston;
Remove the O-ring (14) and bushing (13)
from the piston;
Clean with hydraulic oil of the same specific-
ations;
Replace the problem parts and assembly in
reverse steps.
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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.
A1-4.3 Cylinder Installation
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Install the cylinder according to the reverse
order of removal according to A1-4.1;
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.
CAUTION
CAUTION