The Muncie A20-A1010-HX31XBX or A20A1010HX31XBX is a medium-duty, 10-bolt clutch shift power take-off engineered specifically for Allison 3000 Series and 4000 Series transmissions. The A20 Series mounts via extended-length fasteners and features a shift cover with 360-degree rotation, making installation and plumbing layout more manageable on tight chassis. A rotatable pump flange adds further flexibility in output orientation. Tapered roller bearings extend PTO service life, and an increased-diameter output shaft improves durability under sustained load. The clutch pack carries a single intermittent/continuous torque rating, and the unit is compatible with the Muncie EX Drive shaft extension. Three housing arrangements are available to suit different chassis configurations. Call us to confirm proper fit for your application.
Features
Designed for Allison 3000 Series and 4000 Series transmissions
Clutch shift engagement with proven clutch pack design
Shift cover with 360-degree rotation for flexible mounting
Rotatable pump flange for adaptable output orientation
Tapered roller bearings for extended PTO service life
Compatible with Muncie EX Drive shaft extension
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) |
