The Muncie A20-A1008-HX31X or A20A1008HX31X is a medium-duty, clutch shift power take-off from the Muncie A20 Series, designed specifically for Allison 3000 and 4000 Series transmissions. It mounts via a 10-bolt configuration and delivers a single intermittent/continuous torque rating across multiple speed ratios, from 74% of engine speed at ratio 5 up to 201% at ratio 15. The A20 Series supports three housing arrangements and accepts the EX Drive shaft extension. A rotatable pump flange and a shift cover with 360-degree rotation simplify installation and plumbing. Tapered roller bearings and an increased output shaft diameter extend service life. Call us to confirm proper fit for your application.
Features
10-bolt clutch shift PTO designed for Allison 3000 and 4000 Series transmissions
Rotatable pump flange and 360-degree rotating shift cover for flexible installation
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for added durability
Three housing arrangements available; compatible with EX Drive shaft extension
Maximized gear design reduces operating noise
Tech Specs
- Speed ratios available: 5, 6, 7, 8, 9, 10, 11, 12, 15
- Allison 3000 Series engine speed percentage: 74% (ratio 5) to 201% (ratio 15)
- Allison 4000 Series engine speed percentage: 105% (ratio 5) to 287% (ratio 15)
- Intermittent/continuous HP (kW) at 1,000 RPM: 77 hp (57 kW) at ratio 5-6; 79 hp (59 kW) at ratio 7; 69 hp (51 kW) at ratio 8; 65 hp (48 kW) at ratio 9; 59 hp (44 kW) at ratio 10; 52 hp (39 kW) at ratio 11; 50 hp (37 kW) at ratio 12; 39 hp (29 kW) at ratio 15
- Intermittent/continuous torque: 400 lb.ft. (542 Nm) at ratios 5-6; 415 lb.ft. (563 Nm) at ratio 7; 360 lb.ft. (488 Nm) at ratio 8; 340 lb.ft. (461 Nm) at ratio 9; 310 lb.ft. (420 Nm) at ratio 10; 275 lb.ft. (373 Nm) at ratio 11; 265 lb.ft. (359 Nm) at ratio 12; 205 lb.ft. (278 Nm) at ratio 15
- Mounting: 10-bolt
- Housing arrangements: 3
- Shift type: Clutch shift
- Transmission compatibility: Allison 3000 Series, Allison 4000 Series
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) |
