The Muncie A20 Series power take-off, part number A20-A1005-HR31XPX or A20A1005HR31XPX, is a medium-duty 10-bolt clutch shift PTO engineered specifically for Allison 3000 and 4000 Series transmissions. Its shift cover rotates a full 360 degrees for flexible installation, and the rotatable pump flange adapts to your hydraulic plumbing layout. Tapered roller bearings extend service life, while the increased output shaft diameter adds durability under load. The extended-length PTO mounting fasteners and increased housing clearance simplify installation. Gear geometry is optimized to minimize operating noise, and reduced leak paths lower maintenance demands. The unit is compatible with the EX Drive shaft extension and is available in three housing arrangements. Call us to confirm proper fit for your specific 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 mounting
Rotatable pump flange accommodates multiple hydraulic plumbing layouts
Tapered roller bearings for extended PTO service life
Compatible with EX Drive shaft extension; available in three housing arrangements
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) |
