Description
The Muncie A20-A1008-XX1TAPX or A20A1008XX1TAPX is a medium-duty, 10-bolt clutch shift power takeoff engineered for Allison 3000 and 4000 Series transmissions. The shift cover rotates 360 degrees for flexible installation, and a rotatable pump flange simplifies hydraulic plumbing. Tapered roller bearings extend service life, while an increased-diameter output shaft adds durability at the drive end. The clutch pack carries a single intermittent/continuous torque rating, and the gear design is optimized to reduce operating noise. Three housing arrangements are available, extended-length PTO mounting fasteners ease bolt-up, and the unit accepts the EX Drive shaft extension. Call us to confirm proper fit for your specific transmission application.
Features
Clutch shift engagement, 10-bolt mounting pattern for Allison 3000 & 4000 Series transmissions
Shift cover allows 360-degree rotation for flexible installation positioning
Rotatable pump flange simplifies hydraulic line routing
Tapered roller bearings for extended PTO service life
Single intermittent/continuous torque rating across the speed range
Compatible with EX Drive shaft extension; three housing arrangements available
Tech Specs
- Mounting: 10-bolt
- Shift type: Clutch shift
- Transmission application: Allison 3000 Series, Allison 4000 Series
- Shift cover rotation: 360 degrees
- Bearing type: Tapered roller
- Housing arrangements: Three
- EX Drive shaft extension: Compatible
- Speed 5 – 3000 Series engine %: 74% / 4000 Series engine %: 105% / HP (kW) @ 1,000 RPM: 77 (57) / Torque lbs.ft. (Nm): 400 (542)
- Speed 6 – 3000 Series engine %: 85% / 4000 Series engine %: 122% / HP (kW) @ 1,000 RPM: 77 (57) / Torque lbs.ft. (Nm): 400 (542)
- Speed 7 – 3000 Series engine %: 99% / 4000 Series engine %: 141% / HP (kW) @ 1,000 RPM: 79 (59) / Torque lbs.ft. (Nm): 415 (563)
- Speed 8 – 3000 Series engine %: 114% / 4000 Series engine %: 163% / HP (kW) @ 1,000 RPM: 69 (51) / Torque lbs.ft. (Nm): 360 (488)
- Speed 9 – 3000 Series engine %: 122% / 4000 Series engine %: 175% / HP (kW) @ 1,000 RPM: 65 (48) / Torque lbs.ft. (Nm): 340 (461)
- Speed 10 – 3000 Series engine %: 131% / 4000 Series engine %: 187% / HP (kW) @ 1,000 RPM: 59 (44) / Torque lbs.ft. (Nm): 310 (420)
Additional Information
| SPEED | 3000 SERIES | 4000 SERIES | INTERMITTENTCONTINUOUS 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) |
