The Muncie A20-A1010-SX3X4 or A20A1010SX3X4 is a medium-duty clutch shift power take-off from the Muncie A20 Series, engineered specifically for Allison 3000 and 4000 Series automatic transmissions. The 10-bolt mounting pattern pairs with a shift cover that rotates 360 degrees, letting installers position the control port without reorienting the housing. A rotatable pump flange and increased clearance around the unit simplify installation in tight transmission tunnels. Tapered roller bearings and an enlarged output shaft diameter extend service life under continuous hydraulic loads. Reduced leak paths and a maximized gear profile address two of the most common field complaints on PTO installations: fluid loss and gear noise. Three housing arrangements and compatibility with the Muncie EX Drive shaft extension give this unit broad mounting flexibility. Call us to confirm the right ratio and housing arrangement for your application.
Features
10-bolt clutch shift PTO for Allison 3000 and 4000 Series transmissions
Shift cover allows 360-degree rotation for flexible control-port positioning
Rotatable pump flange simplifies hydraulic plumbing during installation
Tapered roller bearings and increased output shaft diameter for extended service life
Reduced leak paths and optimized gear geometry for lower noise
Compatible with Muncie EX Drive shaft extension; three housing arrangements available
Tech Specs
- Mounting: 10-bolt
- Shift type: Clutch shift
- Transmission application: Allison 3000 Series and 4000 Series
- Shift cover rotation: 360 degrees
- Bearings: Tapered roller
- Housing arrangements: Three
- EX Drive compatibility: Compatible with Muncie EX Drive shaft extension
- Torque rating type: Single intermittent/continuous rating
- Part number: A20-A1010-SX3X4 or A20A1010SX3X4
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) |
