ITEM #05751 Revision B
Garaventa Lift, April 2008
18
C
Y INDER
H
EAD
/S
EAL REPLACEMENT
ARNING! Follow these instructions carefully:
Replacement of Cylinder Head/seal requires removal of the entire cylinder/ram
from the lift and work to be done in a clean environment to prevent dirt and
other contaminants from getting into the hydraulic system. Keep the work
warranty.
Do not damage the cylinder or ram during the disassemble stage of this
procedure. Damage to the Cylinder or ram due to improper handling is not
covered by warranty.
Replacement of the cylinder Head/Seal:
•
Run the platform to the bottom and remove the platform mast-side walls
•
Disconnect and lock off the mains and battery supply
•
Drain the hydraulic oil. Do not allow it to spill.
•
Remove entire cylinder and ram assembly from the mast.
to a clean area whe
•
Remove the cylinder head and ram from the cylinder.
e the piston from the bottom end of the ram.
the Head/Seal assembly from the ram. You must pull the seal off the
nd f the ram (the end that the piston was attached)
Head/Seal onto the ram. Be sure that the threaded end is towards
the piston end.
erviceable Lock-tite to lock the fastener.
e hydraulic lines
L
W
area clean. Damage to the cylinder caused by contamination is not covered by
•
Disconnect the hydraulic fittings to the cylinder.
•
Bring the assembly
re you can work on the cylinder/ram
assembly.
•
Remov
•
Remove
bottom
e
o
•
Install the new
•
Re-install the piston onto the bottom end of the ram. Use a small amount of
s
•
Re-install the ram and cylinder Head/Seal into the cylinder.
•
Re-install the cylinder into the mast.
•
Reconnect th
•
Refill the reservoir with clean hydraulic oil.
•
Bleed the cylinder.
