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| The oil tank is also sometimes called the oil reservoir. | |
| 1 The Job of the Oil Tank | |
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1) It stores hydraulic oil, and, when necessary, it supplies the oil to the hydraulic circuit. 2) It removes dirt or air bubbles from the hydraulic oil. 3) It separates water from the hydraulic from the hydraulic oil. The water that is separated falls to the bottom of the tank, and it must be removed at regular intervals. 4) It dissipates the heat generated by the hydraulic devices. |
| 2 Checking the Amount of Oil in the Tank for a Hydraulic Crane | |
| The oil level in the oil tank decreases when the cylinder expands, and increases when the cylinder retracts. When checking the amount of oil in the oil tank of a hydraulic crane, you must be careful to check it while the crane is in traveling mode.
*The standard oil level for the oil tank of a hydraulic crane in traveling mode is indicated on the oil level meter. |
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| 3 Air Breather | |
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The air breather allows air to enter and leave
the tank as the oil level rises and falls, but it prevents any contaminants
from entering the tank with the air. If the air breather becomes
clogged, air cannot enter and leave the tank, so the resistance acting
on the pump increases. In some cases, the tank ruptures. Therefore,
it is necessary to replace the element with a new one regularly.
The air breather also functions as an oil fill hole. |
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