The Muncie A20 Series power take-off, part number A20-A1012-HX3CCPX or A20A1012HX3CCPX, is a medium-duty clutch shift PTO engineered specifically for Allison 3000 and 4000 Series transmissions. It mounts via a 10-bolt pattern and uses a proven clutch pack design with tapered roller bearings for extended service life. The shift cover rotates 360 degrees and the pump flange is fully rotatable, giving mechanics flexibility during installation. An increased output shaft diameter adds durability under load, while extended-length PTO mounting fasteners and increased housing clearance simplify the install. The A20 is compatible with the Muncie EX Drive shaft extension and is available in three housing arrangements. Call us to confirm the correct configuration for your application.
Features
10-bolt clutch shift mount for Allison 3000 and 4000 Series transmissions
Rotatable pump flange and 360-degree rotating shift cover for flexible installation
Tapered roller bearings for increased PTO service life
Increased output shaft diameter for higher durability under load
Single intermittent/continuous torque rating; available in three housing arrangements
Compatible with Muncie EX Drive shaft extension
Tech Specs
- Mounting: 10-bolt
- Shift type: Clutch shift
- Transmission compatibility: Allison 3000 Series, Allison 4000 Series
- Shift cover rotation: 360 degrees
- Housing arrangements: Three
- EX Drive shaft extension compatible: Yes
- Speed ratio 5: 74% engine speed (3000 Series) / 105% (4000 Series); 400 lb.ft. (542 Nm) intermittent/continuous torque rating
- Speed ratio 6: 85% / 122%; 400 lb.ft. (542 Nm)
- Speed ratio 7: 99% / 141%; 415 lb.ft. (563 Nm)
- Speed ratio 8: 114% / 163%; 360 lb.ft. (488 Nm)
- Speed ratio 9: 122% / 175%; 340 lb.ft. (461 Nm)
- Speed ratio 10: 131% / 187%; 310 lb.ft. (420 Nm)
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) |
