The Muncie A20-A1010-HX1CBPW or A20A1010HX1CBPW 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 with 360-degree rotation, making installation and pump positioning more flexible than fixed-flange units. Tapered roller bearings extend PTO service life, and an increased output shaft diameter adds durability under sustained load. The clutch pack carries a single intermittent/continuous torque rating, removing the guesswork from application selection. Three housing arrangements are available, and the unit is compatible with the EX Drive shaft extension. Extended-length PTO mounting fasteners and increased installation clearance round out the design. Call Pro Gear and Transmission to confirm the correct configuration for your chassis.
Features
10-bolt clutch shift mount designed for Allison 3000 and 4000 Series transmissions
Rotatable pump flange with shift cover allowing 360-degree rotation
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for higher durability under sustained load
Single intermittent/continuous torque rating simplifies application matching
Compatible with EX Drive shaft extension; three housing arrangements available
Tech Specs
- Mounting: 10-bolt
- Shift type: Clutch shift
- Transmission application: Allison 3000 Series, Allison 4000 Series
- Pump flange: Rotatable
- Shift cover rotation: 360 degrees
- Bearings: Tapered roller
- Housing arrangements: Three
- EX Drive shaft extension compatibility: Yes
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) |
