The Muncie A20 Series power take-off, part number A20-A1008-HX3PBBX or A20A1008HX3PBBX, is a medium-duty clutch shift PTO designed for Allison 3000 and 4000 Series transmissions. The 10-bolt mounting pattern pairs with a shift cover that rotates a full 360 degrees, giving installers flexibility on tight installations. A rotatable pump flange and extended-length PTO mounting fasteners further simplify fitment. Tapered roller bearings and an increased-diameter output shaft address long-term durability, while a maximized gear design keeps operating noise low. The unit carries a single intermittent/continuous torque rating and is compatible with the Muncie EX Drive shaft extension. Three housing arrangements are available. Call us to confirm the correct housing and ratio for your application.
Features
Clutch shift design for Allison 3000 and 4000 Series transmissions
Shift cover allows 360-degree rotation for flexible installation positioning
Rotatable pump flange with increased clearance for easier installation
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for added durability
Compatible with Muncie EX Drive shaft extension
Tech Specs
- Mounting: 10-bolt
- Shift type: Clutch shift
- Compatible transmissions: Allison 3000 Series, Allison 4000 Series
- Housing arrangements: Three available
- Torque rating: Single intermittent/continuous torque rating
- Output shaft: Increased diameter design
- Shift cover rotation: 360 degrees
- Pump flange: Rotatable
- 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) |
