The Muncie A20-A1007-JR1IIPX or A20A1007JR1IIPX is a medium-duty, 10-bolt clutch shift power takeoff engineered specifically for Allison 3000 and 4000 Series transmissions. The A20 Series design centers on a proven clutch pack that carries a single intermittent/continuous torque rating across multiple speed ratios, making output selection straightforward for spec work. A shift cover with 360-degree rotation and a rotatable pump flange give the installer flexibility for tight bay configurations, while extended-length PTO mounting fasteners and increased clearance simplify the installation itself. Tapered roller bearings extend service life, and the enlarged output shaft diameter adds durability at the drive end. The unit is compatible with the EX Drive shaft extension and is available in three housing arrangements. Call us to confirm the right ratio and housing configuration for your application.
Features
10-bolt clutch shift design for Allison 3000 and 4000 Series transmissions
Shift cover with 360-degree rotation and rotatable pump flange for flexible installation
Proven clutch pack with a single intermittent/continuous torque rating
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for added durability at the drive end
Compatible with EX Drive shaft extension; available in three housing arrangements
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) |
