30
MR25664
MAINTENANCE AND SERVICE
CYLINDER SEAL REPLACEMENT
The following information is provided to assist you in the event you should need to repair or rebuild a hy-
draulic cylinder. When working on hydraulic cylinders, make sure that the work area and tools are clean and free
of dirt to prevent contamination of the hydraulic system and damage to the hydraulic cylinders. Always protect the
active part of the cylinder rod (the chrome section). Nicks or scratches on the surface of the rod could result in
cylinder failure. Clean all parts thoroughly with a cleaning solvent before reassembly.
DISASSEMBLY PROCEDURE
IMPORTANT: Do not contact the active surface of the cylinder rod with the vise. Damage to the rod could
result.
RETAINING RING TYPE GLAND
1. Mount the cylinder tube securely in a vise.
NOTICE:
Do not clamp too tight and distort the tube.
2. Rotate the gland with a spanner wrench (available from your dealer), until the gland retaining ring appears in
the milled slot.
Pry up the end of the gland retaining ring with a pointed tool. Rotate the gland with a spanner wrench while re-
moving the retaining ring.
NOTE: The gland and piston seal(s) can be pulled out and cut as they appear in
the milled slot during disassembly. After cutting, pull them on out through the milled slot.
3.
Pull the cylinder rod from the cylinder tube.
4.
Inspect the piston and the bore of the cylinder tube for deep scratches or galling. If damaged, the piston
and cylinder tube must be replaced.
5.
Remove the hex nut, piston, flat washer or spacer tube (if so equipped), and gland from the cylinder rod. If
the cylinder rod is rusty, scratched, or bent, it must be replaced.
6.
Remove and discard all old seals.
ASSEMBLY PROCEDURE
IMPORTANT: Replace all seals even if they do not appear to be damaged. Failure to replace all seals may
result in premature cylinder failure.
1. Install the cylinder rod seal in the gland first. Be carefull not to damage the seal in the process as it is some-
what difficult to install. A special installation tool is available to help with installing the seal. Simply fit the end of the
tool over the seal so that the large prong of the tool is on the outside of the seal, and the two smaller prongs on the
inside. The lip of the seal should be facing towards the tool. Rotate the handles on the tool around to wrap the seal
around the end of the tool.
10530
3-8-06
Содержание COLD PLANER III Series
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