This is Tamco/Toku part number Y10298120 valve upper seat, stocked at Crowder Supply as TK-Y10298120. Cycle timing runs through this component. Because it shuttles on every blow, it accumulates cycles faster than almost anything else in the chipping hammer.
It is called out in the parts diagram for the AA-OS Chipping Hammer. That machine is the Tamco/Toku AA-OS Chipping Hammer if you are pricing a replacement rather than a repair. Worth matching the reference number on the diagram against your own machine before you order the same part number can sit in more than one position.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the parts diagram hub. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: Y10298120
- Manufacturer: Tamco/Toku
- Crowder SKU: TK-Y10298120
- Listed on breakdowns for: AA-OS Chipping Hammer

