t-wrench

Updated: May 8, 2025

By lightly tapping in the taper cotter pin little by little, sufficient pressure is put on the cutter to make it an easy matter to completely re-face an old seat or form a new one. A T-wrench or "tommy" can be used to work the cutter spindle.

Walter C. Runciman - Gas and Oil Engines, Simply Explained: An Elementary Instruction Book for Amateurs and Engine Attendants