The Muncie A20-A1012-HX1BB or A20A1012HX1BB is a medium-duty, clutch shift power take-off from the Muncie A20 Series, designed specifically for Allison 3000 and 4000 Series transmissions. The 10-bolt mounting pattern and extended-length PTO mounting fasteners simplify installation, while increased clearance and a shift cover with 360-degree rotation give technicians more flexibility in tight engine compartments. A rotatable pump flange adapts to multiple hydraulic plumbing layouts without repositioning the unit. Inside, tapered roller bearings and an enlarged output shaft diameter extend service life, and a proven clutch pack design paired with maximized gear geometry keeps operating noise down. Three housing arrangements and compatibility with the EX Drive shaft extension add application flexibility. Call us at Pro Gear and Transmission to confirm the right configuration for your application.
Features
10-bolt clutch shift design for Allison 3000 and 4000 Series transmissions
Shift cover with 360-degree rotation and rotatable pump flange for flexible installation
Tapered roller bearings and increased output shaft diameter for longer PTO service life
Extended-length PTO mounting fasteners with increased housing clearance for easier installation
Proven clutch pack design with maximized gear geometry for reduced operating noise
Compatible with EX Drive shaft extension; available in three housing arrangements
Tech Specs
- Mounting: 10-bolt
- Shift type: Clutch shift
- Transmission compatibility: Allison 3000 Series and 4000 Series
- Housing arrangements: Three
- Pump flange: Rotatable
- Shift cover rotation: 360 degrees
- Bearing type: Tapered roller
- Drive shaft extension: Compatible with EX Drive shaft extension
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) |
