The Muncie A20-A1008-HX31XUS or A20A1008HX31XUS is a medium-duty, clutch shift power take-off designed for Allison 3000 and 4000 Series transmissions. The A20 Series mounts via a 10-bolt interface and delivers a single intermittent/continuous torque rating across three available housing arrangements, simplifying spec selection. Speed ratios range from 5 through 15, with engine percentage outputs spanning 74% up to 201% on 3000 Series and 105% up to 287% on 4000 Series applications. The shift cover allows 360-degree rotation, the pump flange is rotatable for flexible installation, and the unit is compatible with the EX Drive shaft extension. Tapered roller bearings and an increased-diameter output shaft contribute to extended service life. A genuine Muncie part, available from Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
10-bolt clutch shift PTO for Allison 3000 and 4000 Series transmissions
Speed ratios from 5 to 15; 3000 Series engine output 74%-201%, 4000 Series 105%-287%
Single intermittent/continuous torque rating across all speed options
Shift cover allows 360-degree rotation; pump flange is fully rotatable
Tapered roller bearings and increased output shaft diameter for extended PTO life
Three housing arrangements; compatible with EX Drive shaft extension
Additional Information
| SPEED | 3000 SERIES | 4000 SERIES | INTERMITTENT CONTINUOUS HP (KW) | INTERMITTENT/CONTINOUS |
| RATIO | ENGINE % | ENGINE % | HP (KW) @ 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) |
