The Muncie A20 Series power take-off A20-A1011-HH3BBPX or A20A1011HH3BBPX is a medium-duty, clutch shift PTO engineered for Allison 3000 and 4000 Series transmissions. It mounts via a 10-bolt pattern and features a shift cover with 360-degree rotation, giving the installer freedom to orient the shift actuator for tight cab-to-axle environments. Tapered roller bearings extend service life, and the increased output shaft diameter adds durability under sustained loads. A rotatable pump flange, reduced leak paths, and extended-length PTO mounting fasteners simplify installation. The gear set is optimized for noise reduction, and the unit is compatible with the Muncie EX Drive shaft extension. Available in three housing arrangements from Pro Gear and Transmission. Call us to confirm the right configuration for your application.
Features
Clutch shift design for Allison 3000 and 4000 Series transmissions
Shift cover allows 360-degree rotation for flexible installation orientation
Rotatable pump flange and extended-length PTO mounting fasteners ease installation
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for higher durability under load
Compatible with Muncie EX Drive shaft extension; available in three housing arrangements
Tech Specs
- Mounting: 10-bolt
- Shift type: Clutch shift
- Transmission application: Allison 3000 Series and Allison 4000 Series
- Shift cover rotation: 360 degrees
- Bearing type: Tapered roller bearings
- Housing arrangements: Three
- EX Drive shaft extension compatible: Yes
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) |
