Cylinder is the American Pneumatic Tool service part carried under part number 2499. The cylinder is the bore the piston runs in, and it sets the working clearance of the rock drill once the bore opens up, air bypasses the piston and blow energy drops.
Crowder’s breakdowns list this part on the 137 Rock Drill. The complete machine is the APT 137 Pneumatic Rock Drill. Check it against the reference number on the diagram first; serial breaks change what fits.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the full diagram library. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: 2499
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT2499
- Listed on breakdowns for: 137 Rock Drill
