SL2023-735/AGC Reconditioning of exhaust valve spindles

Due to a regrettable delay in the development work and necessary service documentation of our reconditioning procedure for the exhaust valve spindles mentioned in this Service Letter, we inform you that reconditioning of those spindles is not allowed until further
notice.

We expect to have a reconditioning procedure available by mid-2026.
Recondition trials and service tests are ongoing to validate a reconditioning procedure. New material solutions need validation and service testing to obtain performance results comparable to a new DSA760 exhaust valve spindle or an XV3 spindle.