The Muncie A20 Series 10-bolt clutch shift power takeoff, part number A20-A1011-HX5BBBX or A20A1011HX5BBBX, is a medium-duty PTO engineered specifically for Allison 3000 and 4000 Series transmissions. The shift cover rotates a full 360 degrees, and the pump flange is also rotatable, giving technicians flexibility during installation. A proven clutch pack design combined with tapered roller bearings extends service life, while an increased-diameter output shaft handles higher drive loads. Gear geometry is optimized to minimize operating noise. The unit shares a single torque rating across intermittent and continuous duty cycles and is compatible with the EX Drive shaft extension. Three housing arrangements are available, and extended-length PTO mounting fasteners are included. Call us to confirm proper fit for your application.
Features
Clutch shift engagement designed for Allison 3000 and 4000 Series transmissions
10-bolt mounting with extended-length PTO mounting fasteners included
360-degree rotatable shift cover and rotatable pump flange for flexible installation
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for higher drive durability
Compatible with EX Drive shaft extension; three housing arrangements available
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) |
