347
M8.0-1055-001
01 Rev. 6/08
CYLINDERS
Cylinders
Cylinders
Avoid high pressure fluids - escaping fluids under pres-
sure can penetrate the skin, causing serious injury. Re-
lieve pressure before disconnecting hydraulic lines.
Tighten all connections before applying pressure.
Keep hands and body away from pin holes which eject
fluids under high pressure. Use a piece of cardboard or
paper to search for leaks. Do not use your hand.
Any fluid injected into the skin under high pressure
should be considered a serious medical emergency
despite an initial normal appearance of the skin. There
is a delayed onset of pain, and serious tissue damage
may occur. Medical attention should be sought imme-
diately from a specialist who has experience with this
type of injury.
Great care and cleanliness should be exercised in the
disassembly and assembly of any hydraulic cylinders.
1. Wipe all surfaces clean of dirt and oil before disas-
sembly.
2. Care should be taken when removing the ram from
the cylinder to prevent damage to the packing on
the piston end.
3. After cylinder components are disassembled and
seals, o-rings and wipers are removed, thoroughly
wash all metallic parts in solvent and blow dry with
compressed air.
4. Carefully inspect the ram assembly and cylinder
bore. Replace if scored, grooved, pitted or worn.
Minor damage to the cylinder bore can be removed
with the use of a cylindrical honing tool.
5. Place washed components in a clean container un-
til reassembly. Whenever new packings are re-
quired, new wiper rings should also be installed.
Crown 2007 PF15682-1 Rev. 6/08
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