The Muncie A20 Series power take-off, part number A20-A1012-XX11XPX or A20A1012XX11XPX, is a medium-duty, clutch-shift PTO engineered specifically for Allison 3000 and 4000 Series transmissions via a 10-bolt mount. The shift cover rotates a full 360 degrees, and the pump flange is also rotatable, giving installers flexible plumbing and mounting options. Tapered roller bearings extend service life, while an enlarged output shaft diameter handles higher torque loads. The gear set is designed to minimize noise, and reduced leak paths cut maintenance exposure. Three housing arrangements are available, and the unit is compatible with the EX Drive shaft extension. Call us to confirm the correct configuration for your application.
Features
10-bolt clutch-shift mount designed for Allison 3000 and 4000 Series transmissions
Rotatable pump flange and 360-degree rotatable shift cover for flexible installation
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for higher torque durability
Reduced leak paths and noise-optimized gear design
Compatible with EX Drive shaft extension; three housing arrangements available
Tech Specs
- Mount: 10-bolt
- Shift type: Clutch shift
- Application: Allison 3000 Series and 4000 Series transmissions
- Shift cover rotation: 360 degrees
- Bearings: Tapered roller
- Housing arrangements: Three
- EX Drive shaft extension: Compatible
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) |
