Plunger Spring, American Pneumatic Tool part number 2356, listed at Crowder Supply as APT2356. It supplies the return force for its assembly in the rock drill. A spring that has taken a set gives soft or sticky action long before it actually breaks.
It shows up in the parts breakdown for the 137 Rock Drill. It comes off the APT 137 Pneumatic Rock Drill. Pull up the diagram and confirm the reference number for your serial before ordering.
Everything else on that machine is one page away, and the parts breakdown index indexes every breakdown we publish. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: 2356
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT2356
- Listed on breakdowns for: 137 Rock Drill
