The Muncie A20-A1006-HR31XPX or A20A1006HR31XPX is a medium-duty, 10-bolt clutch shift power take-off engineered for Allison 3000 and 4000 Series transmissions. The A20 Series design centers on a rotatable pump flange and a shift cover with 360-degree rotation, giving installers significantly more flexibility in tight engine bays. Tapered roller bearings extend PTO service life, while the increased output shaft diameter adds durability under sustained hydraulic loads. A proven clutch pack design carries a single intermittent/continuous torque rating, simplifying spec selection. Three housing arrangements and compatibility with the EX Drive shaft extension round out the mounting options. Call us to confirm the right configuration for your application.
Features
Clutch shift engagement, 10-bolt mounting pattern for Allison 3000 and 4000 Series transmissions
Rotatable pump flange and 360-degree shift cover rotation for flexible installation
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for higher durability under load
Three housing arrangements available; compatible with EX Drive shaft extension
Maximized gear design for reduced operating noise and reduced leak paths
Tech Specs
- Shift Type: Clutch Shift
- Mounting: 10-Bolt
- Transmission Compatibility: Allison 3000 Series and Allison 4000 Series
- Torque Rating: Single intermittent/continuous rating
- Housing Arrangements: Three available
- Pump Flange: Rotatable
- Shift Cover Rotation: 360 degrees
- Drive Shaft Extension: Compatible with 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) |
