The Muncie A20-A1012-HX1B6 or A20A1012HX1B6 is a medium-duty, 10-bolt clutch shift power take-off engineered specifically for Allison 3000 and 4000 Series transmissions. The A20 Series design centers on a rotatable pump flange and a shift cover that rotates a full 360 degrees, giving installers far more flexibility in tight engine compartments. Tapered roller bearings extend PTO service life, and the enlarged output shaft diameter adds durability under sustained load. Gear geometry is optimized to reduce operating noise. The unit accepts the Muncie EX Drive shaft extension and features extended-length PTO mounting fasteners for a secure, lower-leak installation. Three housing arrangements are available within this series. Call us to confirm the correct configuration for your application.
Features
Clutch shift engagement, 10-bolt mounting for Allison 3000 and 4000 Series transmissions
Shift cover with full 360-degree rotation for flexible installation positioning
Rotatable pump flange adapts to multiple hydraulic circuit layouts
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for added durability under continuous load
Compatible with Muncie EX Drive shaft extension
Tech Specs
- Mounting: 10-bolt
- Shift type: Clutch shift
- Transmission compatibility: Allison 3000 Series and 4000 Series
- Shift cover rotation: 360 degrees
- Housing arrangements: Three available
- Output shaft: Increased diameter design
- Bearings: Tapered roller
- Pump flange: Rotatable
- Mounting fasteners: Extended length
- 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) |
