The Muncie A20-A1009-HX1BSPX or A20A1009HX1BSPX is a medium-duty, 10-bolt clutch shift power take-off engineered specifically for Allison 3000 Series and 4000 Series transmissions. The A20 Series design features a rotatable pump flange, a shift cover with full 360-degree rotation, and extended-length PTO mounting fasteners that simplify installation. Tapered roller bearings extend service life, while a proven clutch pack and maximized gear geometry keep operating noise in check. Three housing arrangements give you flexibility to match your truck's configuration, and the unit is compatible with the EX Drive shaft extension. Single intermittent/continuous torque ratings are published for each available gear ratio. Call us to confirm the correct ratio and housing arrangement for your application.
Features
10-bolt clutch shift engagement for Allison 3000 and 4000 Series transmissions
Rotatable pump flange with 360-degree shift cover rotation
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for higher durability
Three housing arrangements available; compatible with EX Drive shaft extension
Reduced leak paths and maximized gear design for quieter operation
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) |
