Hi Paul,
Assuming this is a New York model A from about 7 years ago, you should be able to lift the pedal rods out of the rubber cups in the back of the pedals. This might require adjusting the pedal tips down to give more slack in the trapwork.
The lyre is removed by using a 5/16" Allen wrench to loosen the set screw holding the lyre lock plates together.
Reposting the following from an earlier thread, but I thought it would be relevant here,
Below is the Steinway New York Leg and Lyre Plate assembly for models S-D (#009060). In use on the legs from 2007 to Present and on the lyre from 2007 to 2024
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Daniel DeBiasio
Technical Education & Support
ddebiasio@steinway.com718-267-3229
Steinway & Sons
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