The Muncie A20-A1012-JX3X4PX or A20A1012JX3X4PX is a medium-duty, 10-bolt clutch shift power take-off engineered for Allison 3000 and 4000 Series transmissions. The A20 Series is built around a proven clutch pack design with tapered roller bearings for extended service life and an increased output shaft diameter for added durability. The shift cover rotates 360 degrees for flexible installation, and the rotatable pump flange adapts to a range of hydraulic setups. Reduced leak paths and a maximized gear profile address both fluid retention and noise. Three housing arrangements and compatibility with the EX Drive shaft extension add application flexibility. Available from Pro Gear and Transmission - call us to confirm proper fit for your specific chassis and transmission build.
Features
10-bolt clutch shift PTO for Allison 3000 and 4000 Series transmissions
Proven clutch pack design with tapered roller bearings for extended PTO life
360-degree rotating shift cover and rotatable pump flange for flexible installation
Increased output shaft diameter for higher durability
Reduced leak paths and optimized gear profile for quieter operation
Three housing arrangements; compatible with EX Drive shaft extension
Tech Specs
- Transmission Compatibility: Allison 3000 Series and 4000 Series
- Mount Type: 10-bolt clutch shift
- Shift Cover Rotation: 360 degrees
- Housing Arrangements: Three
- Output Shaft: Increased diameter design
- Bearing Type: Tapered roller
- EX Drive Shaft Extension: Compatible
- Torque Rating: Single intermittent/continuous rating (see performance table)
- Fasteners: Extended length PTO mounting fasteners included
Additional Information
| SPEED | 3000 SERIES | 4000 SERIES | INTERMITTENT CONTINUOUS HP (KW) | INTERMITTENT/CONTINOUS |
| RATIO | ENGINE % | ENGINE % | HP (KW) @ 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) |
