There is an air bleeder valve on most units that must be opened a few turns before utilization. Also there is a dipstick to verify level of hydraulic oil.Usually one of these two.Check for oil leaks could be a seal broken.
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There is an air bleeder valve on most units that must be opened a few turns before utilization. Also there is a dipstick to verify level of hydraulic oil.Usually one of these two.Check for oil leaks could be a seal broken.