Atlas Copco SMARTROC D65 TIER 4 FINAL, Maintenance Manual

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SmartROC D65 Tier 4 Final 6 Hydraulic systems
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NOTE: The pressure in the hydraulic hoses may vary depending on the operating
mode selected.
CAUTION
Risk of injury
Hazardous hydraulic oil and water pressure
u Can cause personal injury
u Never replace high pressure hoses with hoses of lower quality than the originals or with
hoses fitted with removable couplings
The hydraulic system is sensitive to impurities. The environment in which a drill rig nor-
mally operates is usually unsuitable for repairing hydraulic components. Work on the hy-
draulic system on-site should therefore be limited to absolute necessities, i.e. only chan-
ging components. When changing valves, the unit in question must be well strapped and
supported. Components should then be repaired in a suitable environment.
Observe the following points to avoid breakdowns and interruptions in operation due to
fouled hydraulic oil:
n
Keep the drill rig clean. Hose it down at regular intervals, preferably with an added
grease solvent.
n
Before opening any connection, clean the area round it thoroughly.
n
Use clean tools and work with clean hands.
n
Always plug hydraulic connections immediately after they have been detached.
n
Use clean protective plugs.
n
Hydraulic components, such as hoses, valves, motors, must always be kept with suit-
able protective plugs fitted.
n
Spare parts for hydraulic components must always be kept in sealed plastic bags.
n
Change filter cartridges as soon as the filters indicate clogging.
6.3 Repairing hydraulic components
Repairing and/or reconditioning hydraulic components should be carried out by expert per-
sonnel and in a suitable place. The following alternatives are possible:
n
Suitable premises for hydraulic repairs to be arranged at the workplace. Repairs to be
carried out by your own specially trained personnel, the manufacturer's technicians or
Atlas Copco personnel.
n
Components to be sent to the manufacturer's local agent for repair.
n
Component repairs are carried out by Atlas Copco. Overhauling instructions are avail-
able for the most important and most complicated hydraulic components.
6.4 Replacement of hydraulic hoses
The high system pressure with safety valves set to 280 bar, together with the vibration and
other mechanical strain, puts high demands on the hydraulic hoses. All hydraulic hoses are
fitted with pressed couplings and should therefore be purchased ready-made from Atlas
Copco. Hose dimensions and qualities are specified in the spare parts lists for the drill rig.