The Muncie A20 Series power take-off, part number A20-A1005-H21BSBX or A20A1005H21BSBX, is a medium-duty clutch shift PTO designed for Allison 3000 and 4000 Series transmissions. The 10-bolt mounting configuration pairs with a shift cover that rotates 360 degrees and a rotatable pump flange, giving the installer real flexibility in tight engine compartments. Tapered roller bearings extend service life, while the enlarged output shaft diameter and extended-length PTO mounting fasteners address durability and installation ease in equal measure. Reduced leak paths and a maximized gear profile keep noise and fluid management in check. Three housing arrangements and compatibility with the EX Drive shaft extension round out the application options. Call us to confirm proper fit for your specific transmission configuration.
Features
Clutch shift engagement on a 10-bolt mount for Allison 3000 and 4000 Series transmissions
Shift cover allows 360-degree rotation for flexible installation orientation
Rotatable pump flange simplifies hydraulic plumbing layout
Tapered roller bearings for extended PTO service life
Increased output shaft diameter for added durability under load
Compatible with Muncie EX Drive shaft extension
Tech Specs
- Mount pattern: 10-bolt
- Shift type: Clutch shift
- Designed for: Allison 3000 Series and 4000 Series transmissions
- Shift cover rotation: 360 degrees
- Bearing type: Tapered roller bearings
- Housing arrangements: Three
- EX Drive shaft extension: Compatible
- PTO mounting fasteners: Extended length
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) |
