Throttle Valve Ass’y, American Pneumatic Tool part number 1280583529, previously 03508, listed at Crowder Supply as APT3508. It governs how air reaches the working end of the breaker. Wear on the sealing land is the usual cause of a throttle that leaks with the trigger released.
You will find it on the diagram for the 140 Paving Breaker and 140 Paving Breaker – Former Construction. The tool itself is the APT 140 Pneumatic Paving Breaker. 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.
Everything else on that machine is one page away, and the parts diagram library indexes every breakdown we publish. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 1280583529
- Previous part number: 03508
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT3508
- Listed on breakdowns for: 140 Paving Breaker, 140 Paving Breaker – Former Construction
