Repair
Undo the two screws holding the actuator bracket to the compressor housing. As they are loosened the rod will be drawn into the can by the spring inside. Do not undo the locknut on the rod, if you turn the adjuster you will lose the calibration. When the can is free carefully rotate it on the rod until it can be moved sideways. This is not good for the diaphragm, so keep the rotation to the mimimum. The compressor housing is now vulnerable so put one of the screws back in to make sure it does not get dislodged in the following process.
If the wastegate is stuck in the turbine housing (unlikely), separate the catalyst from the turbo and investigate.
If the rod end is tight on the crank pin (more likely), work the rod around the pin back and forth as far as possible. This will loosen and expel the corrosion that has caused it to stick. When it is completely free, remove the temporarily installed screw, place the actuator back in its correct position and rotate it back to align the bracket with the compressor housing. Refit the two screws. As they are tightened the actuator moves back into position, tensioning the spring as it goes.
Use the footpump to check that it moves freely. Reconnect the hose to the pipe on the compressor housing.
