The Muncie A20 Series power take-off, part number A20-A1007-HR5BBBX or A20A1007HR5BBBX, is a medium-duty clutch shift PTO engineered specifically for Allison 3000 and 4000 Series transmissions. The 10-bolt mounting pattern pairs with a shift cover that allows 360-degree rotation, giving installers flexibility on tight firewall clearances. A rotatable pump flange and extended-length PTO mounting fasteners reduce installation complexity. Tapered roller bearings extend service life, and the increased-diameter output shaft handles higher drive loads. The gear set is optimized to minimize operating noise, and the design carries a single intermittent/continuous torque rating across the full speed range. Three housing arrangements are available, and the unit is compatible with the Muncie EX Drive shaft extension. Call us to confirm the right configuration for your application.
Features
10-bolt clutch shift design for Allison 3000 and 4000 Series transmissions
Shift cover allowing 360-degree rotation for flexible installation
Rotatable pump flange with extended-length PTO mounting fasteners
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for higher drive durability
Compatible with Muncie EX Drive shaft extension; three housing arrangements available
Tech Specs
- Mounting: 10-bolt
- Shift type: Clutch shift
- Transmission application: Allison 3000 Series and 4000 Series
- Torque rating: Single intermittent/continuous rating (see performance table)
- Housing arrangements: Three
- Shift cover rotation: 360 degrees
- Drive shaft extension compatibility: Muncie EX Drive
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) |
