The Muncie A20-A1012-HX3PBPX or A20A1012HX3PBPX is a medium-duty, 10-bolt clutch shift power take-off engineered for Allison 3000 and 4000 Series transmissions. The A20 Series uses a proven clutch pack design with tapered roller bearings to extend PTO service life, and an increased output shaft diameter for added durability under load. A rotatable pump flange and a shift cover with 360-degree rotation simplify installation and pump alignment. Three housing arrangements give flexibility for different mounting configurations, and compatibility with the Muncie EX Drive shaft extension broadens application options. Reduced leak paths and a maximized gear design address two common field complaints: fluid leaks and operating noise. Extended-length PTO mounting fasteners and increased installation clearance round out a design focused on easier service. Available from Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
Medium-duty clutch shift PTO for Allison 3000 and 4000 Series transmissions
Rotatable pump flange with 360-degree rotating shift cover for flexible installation
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for higher durability under load
Three housing arrangements; compatible with Muncie EX Drive shaft extension
Reduced leak paths and maximized gear design for quieter operation
Tech Specs
- Mounting: 10-bolt
- Shift type: Clutch shift
- Transmission application: Allison 3000 Series and 4000 Series
- Housing arrangements: Three
- Pump flange: Rotatable
- Shift cover rotation: 360 degrees
- EX Drive shaft extension compatibility: Yes
- Speed ratio / 3000 Series engine % / 4000 Series engine % / Intermittent-continuous HP (kW) @ 1,000 RPM / Intermittent-continuous torque rating lbs.ft. (Nm)
- Ratio 5: 74% / 105% / 77 (57) / 400 (542)
- Ratio 6: 85% / 122% / 77 (57) / 400 (542)
- Ratio 7: 99% / 141% / 79 (59) / 415 (563)
- Ratio 8: 114% / 163% / 69 (51) / 360 (488)
- Ratio 9: 122% / 175% / 65 (48) / 340 (461)
- Ratio 10: 131% / 187% / 59 (44) / 310 (420)
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) |
