I am working on a 130J which is converted to a maintenance trainer. after the ramp was lowered to ADS position i found the manual dial set at #5. the ramp locks are extended with the ramp open. I am unable to retract the locks manually. setting the dial at #1 will raise the ramp but will not disengage the locks. basically i am unable to close the ramp. note: that the Elect/HYD function from the Aux pump has been disabled due to our tear-down process. Any ideas would be appreciated. Note: Fault isolation manuals states to replace the manifold.
