The Muncie A20-A1011-HX3PB or A20A1011HX3PB is a medium-duty clutch shift power take-off from the Muncie A20 Series, designed specifically for Allison 3000 and 4000 Series transmissions. The 10-bolt mounting configuration pairs with a shift cover that rotates 360 degrees, giving technicians flexibility during installation. A rotatable pump flange and extended-length PTO mounting fasteners reduce fitment headaches in tight installations. Tapered roller bearings extend service life, and the increased output shaft diameter handles higher torque demands. The gear design targets noise reduction, while reduced leak paths keep maintenance intervals manageable. Three housing arrangements are available, and the unit is compatible with the EX Drive shaft extension. Available from Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
Clutch shift operation with 10-bolt mounting for Allison 3000 and 4000 Series transmissions
Shift cover with 360-degree rotation for flexible installation positioning
Rotatable pump flange and extended-length PTO mounting fasteners for easier installation
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for higher torque capacity
Compatible with EX Drive shaft extension; three housing arrangements available
Tech Specs
- Mounting: 10-bolt
- Shift type: Clutch shift
- Application: Allison 3000 Series and 4000 Series transmissions
- Shift cover rotation: 360 degrees
- Bearing type: Tapered roller bearings
- Housing arrangements: Three
- EX Drive shaft extension compatibility: 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) |
