The Muncie A20-A1009-SX11X or A20A1009SX11X is a medium-duty, clutch-shift power take-off from Muncie's A20 Series, designed specifically for Allison 3000 and 4000 Series transmissions. It mounts via a 10-bolt interface and features a shift cover that rotates a full 360 degrees, giving installers flexibility in cab or remote shift routing. A rotatable pump flange and extended-length PTO mounting fasteners reduce installation hassle, while a proven clutch pack and tapered roller bearings are built to extend service life. The increased output shaft diameter adds durability under sustained loads, and the gear design is optimized to minimize operating noise. Three housing arrangements and compatibility with the EX Drive shaft extension make this unit adaptable across a range of body and hydraulic configurations. Call us to confirm the right arrangement for your application.
Features
Clutch-shift engagement designed for Allison 3000 and 4000 Series transmissions
Shift cover allows full 360-degree rotation for flexible installation
Rotatable pump flange and increased housing clearance simplify mounting
Tapered roller bearings and increased output shaft diameter for extended service life
Three housing arrangements available; compatible with EX Drive shaft extension
Extended-length PTO mounting fasteners and reduced leak paths throughout
Tech Specs
- Mounting: 10-bolt
- Shift type: Clutch shift
- Compatible transmissions: Allison 3000 Series, Allison 4000 Series
- Shift cover rotation: 360 degrees
- Housing arrangements: Three available
- Drive shaft extension compatibility: EX Drive shaft extension
- Bearing type: Tapered roller bearings
- Torque rating: Single intermittent/continuous rating
Additional Information
| SPEED | 3000 SERIES | 4000 SERIES | INTERMITTENT CONTINUOUS HP (KW) | INTERMITTENT/CONTINOUS |
| RATIO | ENGINE % | ENGINE % | @ 1,000 RPM | TORQUE LBS.FT. (NM) |
| 5 | 74% | 105% | 77 (57) | 400 (542) |
| 6 | 85% | 122% | 77 (57) | 400 (542) |
| 7 | 99% | 141% | 79 (59) | 415 (563) |
| 8 | 114% | 163% | 69 (51) | 360 (488) |
| 9 | 122% | 175% | 65 (48) | 340 (461) |
| 10 | 131% | 187% | 59 (44) | 310 (420) |
| 11 | 151% | 215% | 52 (39) | 275 (373) |
| 12 | 162% | 231% | 50 (37) | 265 (359) |
| 15 | 201% | 287% | 39 (29) | 205 (278) |
