The Muncie A20-A1007-HX5X4BX or A20A1007HX5X4BX is a medium-duty, 10-bolt clutch shift power take-off engineered for Allison 3000 and 4000 Series transmissions. The A20 Series design incorporates a rotatable pump flange and a shift cover that allows 360-degree rotation, giving installers flexibility in tight engine compartments. Clearance improvements simplify mounting, and extended-length PTO mounting fasteners are included. The proven clutch pack uses tapered roller bearings to extend PTO service life, and an increased-diameter output shaft adds durability under sustained load. Reduced leak paths and a maximized gear profile keep noise down during operation. The unit supports a single intermittent/continuous torque rating and comes in three housing arrangements. It is also compatible with the EX Drive shaft extension. Call us to confirm the correct configuration for your application.
Features
10-bolt clutch shift PTO for Allison 3000 and 4000 Series transmissions
Rotatable pump flange and shift cover with 360-degree rotation for flexible installation
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for higher durability under sustained load
Reduced leak paths and optimized gear design for quieter operation
Compatible with EX Drive shaft extension; available in three housing arrangements
Tech Specs
- Mount Pattern: 10-bolt
- Shift Type: Clutch shift
- Application: Allison 3000 Series and 4000 Series transmissions
- Housing Arrangements: Three
- Output Shaft: Increased diameter design
- Pump Flange: Rotatable
- Shift Cover Rotation: 360 degrees
- Torque Rating: Single intermittent/continuous rating
- Bearings: Tapered roller
- 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) |
