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Maintenance
131
Inspection criteria
It is not permitted to carry out repairs on hydraulic hoses!
Replace hoses if the following is detected during inspection:
•
damage to the exterior up to the armouring (such as abrasion
marks, cuts and tears),
•
the exterior becoming brittle (tears in the hose),
•
distortion not normal for the pattern of the hose while under
pressure, as well as without pressure or with bends, e.g. layers
pealing off and blisters forming,
•
leakages,
•
not mounted as per requirements,
•
damage or distortion of the hose block, which would compromise
the strength of the block or the connection between the hose and
the regulating block,
•
hose coming out of the connectors,
•
corrosion of the connector which would compromise the function
and strength,
•
exceeding the storage and the operating limits.
Only use original parts when replacing hoses. Hoses must be placed
and mounted in the proper way. Be careful not to change the
connections. Replaced hoses must be suitable to the permitted work
pressure and be resistant to chemical, mechanical and thermal loads.
Only use hose clamps made from stainless steel.
Replacing
Run the hydraulic control valves until all the cylinders are engaged.
Take the pressure off the hydraulic system.
Switch the tractor off and remove the key from the ignition and
engage the parking brake of the tractor.
Disengage the machine,
→
See paragraph »Disconnecting the machine« on page 120.
Demount the connectors with the proper tools.
Collect the oil that drips from the cylinders and the hoses.
Mount new hoses and put them so that they would not get pinched.
Dispose of the collected oil as required by national legislation.
Operate the hydraulic control valves of the tractor very carefully at first
after replacing the hoses as there could still be pockets of air in the
pipes! Open and close all the hydraulic control valves a few times
before you start working.
Содержание RO-C 1400
Страница 4: ...Table of contents 4...
Страница 139: ...Maintenance 139 109 mm Rope Discharge bushing Position V Mechanical...
Страница 153: ...Notes 153 Notes...