Spring is the American Pneumatic Tool service part carried under part number 1280583022, which replaced the older number 18700. It loads its mating part against the seat. When free length drops, the symptom is inconsistent operation the tool works, but not crisply.
Crowder’s breakdowns list this part on the 307 & 317 Needle Scaler. It comes off the APT 307 Pneumatic Needle Scaler. Check it against the reference number on the diagram first; serial breaks change what fits.
Need the parts around it? They are on the same breakdown, and the parts breakdown index covers every machine we publish. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 1280583022
- Previous part number: 18700
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT18700
- Listed on breakdowns for: 307 & 317 Needle Scaler
