This is Tamco/Toku part number Y10103080 spring pin – 6×24, stocked at Crowder Supply as TK-Y10103080. Springs in a rock drill fatigue with cycle count rather than age, so a control that has gone lazy or fails to return is usually this part rather than the component it drives.
The published breakdown lists it on the THD 1100N Rock Drill and THD 1100U Rock Drill (CP9A), and on 1 other machine. 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 breakdown index. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: Y10103080
- Manufacturer: Tamco/Toku
- Crowder SKU: TK-Y10103080
- Listed on breakdowns for: THD 1100N Rock Drill, THD 1100U Rock Drill (CP9A), TCH 2 3 4 Chipping Hammer

