The Muncie A20-A1007-SX3X4PX or A20A1007SX3X4PX is a medium-duty, clutch shift power takeoff from the Muncie A20 Series, designed for use on Allison 3000 and 4000 Series transmissions via a 10-bolt mounting pattern. The A20 Series uses a proven clutch pack design with tapered roller bearings to extend service life, and an increased-diameter output shaft for added durability. The shift cover rotates 360 degrees, giving installers flexibility in tight engine compartments, and the rotatable pump flange further simplifies plumbing layout. Reduced leak paths and optimized gear geometry keep noise low in continuous-duty cycles. Three housing arrangements are available, and the unit is compatible with the EX Drive shaft extension. Call us to confirm the correct configuration for your application.
Features
10-bolt clutch shift design for Allison 3000 and 4000 Series transmissions
Proven clutch pack with tapered roller bearings for extended PTO service life
360-degree rotatable shift cover and rotatable pump flange for flexible installation
Increased output shaft diameter for higher durability under continuous load
Reduced leak paths and optimized gear geometry for quieter operation
Compatible with EX Drive shaft extension; three housing arrangements available
Tech Specs
- Mounting: 10-bolt
- Shift type: Clutch shift
- Transmission compatibility: Allison 3000 Series, Allison 4000 Series
- Shift cover rotation: 360 degrees
- Bearings: Tapered roller
- Housing arrangements: Three
- EX Drive shaft extension compatible: Yes
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) |
