Hydraulic accumulator exchange tool

A method of removing and exchanging a hydraulic fluid accumulator installed within a hub of a wind turbine, the method comprising:

• providing an arrangement for exchanging the hydraulic fluid accumulator, the arrangement having:
• a first bar connecting a first pair of mounting legs at a lower portion of the first pair of mounting legs;
• a second bar connecting a second pair of mounting legs at a lower portion of the second pair of mounting legs;
• connecting the first pair of mounting legs each having at an upper portion a connector to a hub component;
• connecting the second pair of mounting legs each having at an upper portion a connector to the hub component and/or to a further hub component;
• moving an elongate resting structure at one end slidably supported by the first bar and at another end slidably supported by the second bar in a parallel manner traverse to a longitudinal direction of the resting structure such as to be below the accumulator to be exchanged;
• lowering the accumulator onto the resting structure for carrying the accumulator.

An arrangement for at least one of removing and exchanging a hydraulic fluid accumulator installed within a hub of a wind turbine, the arrangement comprising:

• a first pair of mounting legs each having at an upper portion a connector for operably connecting to a hub component;
• a second pair of mounting legs each having at an upper portion a connector for operably connecting to the hub component;
• a first bar connecting the first pair of mounting legs;
• a second bar connecting the second pair of mounting legs;
• an elongate resting structure for carrying an accumulator, the resting structure being at one end slidably supported by the first bar and at another end slidably supported by the second bar and being movable in a parallel manner traverse to a longitudinal direction of the resting structure.