You have got to lift the lift off, keep the arms lowered and lift the housing up slightly and back to allow the linkage to clear. Be careful, you have slackened off the ram cylinder retaining bolts, the ones inside the outer ring of bolts at the front. You may need the ram cylinder off to get to the linkage a bit easier,there is another ram cylinder retaining bolt under the Auxiliary Service Plate at the front of the lift.
Ram cylinder off.
You may need to strip the linkage out, this will mean removing the lift lever and quadrant, the flat link and possibly the external draft control spring and linkage. I have managed to do this job by just taking off the flat link and tilting the position control linkage forward to get at the pin.
The pin you are after is this one. Usually it will be worn nearly through.