The Muncie A20-A1011-HR31X or A20A1011HR31X is a medium-duty, clutch shift power take-off from the A20 Series, designed specifically for Allison 3000 and 4000 Series transmissions. The 10-bolt mounting interface pairs with a shift cover that allows full 360-degree rotation, giving installers flexibility in routing and cab controls. A rotatable pump flange and increased component clearances simplify installation in tight engine compartments. Tapered roller bearings and an enlarged output shaft diameter extend service life under demanding duty cycles. The proven clutch pack carries a single intermittent/continuous torque rating, and the unit is compatible with the EX Drive shaft extension for added application flexibility. Call us to confirm proper fit for your application.
Features
Designed for Allison 3000 and 4000 Series transmissions
Clutch shift engagement with proven clutch pack design
Shift cover allows 360-degree rotation for flexible installation
Rotatable pump flange reduces installation constraints
Tapered roller bearings and enlarged output shaft diameter for extended service life
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) |
