Bradco 509 Manual do Operador descarregar pdf (Página 35)

MAINTENANCE AND SERVICE

10356 10-13-05

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.

THREADED TYPE GLAND

1. Rotate the gland with a spanner wrench counterclockwise until the gland is free of the cylinder tube.

2. Pull the cylinder rod from the cylinder tube and inspect the piston and the bore of the cylinder tube for

deep scratches or galling. If damaged, the piston AND the cylinder tube must be replaced.

3. Removethehexnut,piston,at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.

4. Remove and discard all the 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. NOTE: Seal kits will service most cylinders of similar bore size and

rod diameter.

1. Installthecylinderrodsealintheglandrst.Becarefulnottodamagethesealintheprocess,asitis

somewhatdifculttoinstall.

NOTE:Aspecialinstallationtool(Part#65349)isavailabletohelpwithinstallingtheseal.Simplyt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.

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