The Muncie A20-A1009-SX51X or A20A1009SX51X is a medium-duty, 10-bolt clutch shift power take-off engineered specifically for Allison 3000 and 4000 Series transmissions. The A20 Series features a shift cover with 360-degree rotation, a rotatable pump flange, and increased clearance for easier installation. Tapered roller bearings extend PTO service life, and the enlarged output shaft diameter adds durability under sustained load. The proven clutch pack design carries a single intermittent/continuous torque rating across the speed range, simplifying application selection. Three housing arrangements and extended-length PTO mounting fasteners give installers mounting flexibility. The unit is compatible with the Muncie EX Drive shaft extension. Available from Pro Gear and Transmission - call us to confirm the correct ratio and housing arrangement for your application.
Features
10-bolt clutch shift PTO designed for Allison 3000 and 4000 Series transmissions
Shift cover allows 360-degree rotation for flexible installation positioning
Rotatable pump flange with increased clearance for easier installation
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for higher durability under load
Compatible with Muncie EX Drive shaft extension; three housing arrangements available
Tech Specs
- Mounting: 10-bolt clutch shift
- Transmission Application: Allison 3000 Series and 4000 Series
- Shift Cover Rotation: 360 degrees
- Torque Rating: Single intermittent/continuous rating (see ratio table)
- Housing Arrangements: Three available
- EX Drive Shaft Extension: Compatible
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) |
