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The breather pressurises the fluid trapped in the tank up to 0.3Bar; this is to reduce pump
cavitation and reduces the air flow through the breather - extending the filter life.
To avoid danger; unscrew the breather two revolutions and then wait until pressure in tank is
equal to the atmosphere - the breather can then be removed safely.
It is advisable to remove any pressure in the tank before working on the hydraulics as this
will reduce the amount of oil split.
Hot Oil & Hot Components
Never attempt to perform service or maintenance work on the machine's hydraulic
system whilst the components and/or their contained oils are hot; machines must be
allowed to cool down to a safe temperature state before performing any repairs,
service or maintenance tasks.
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