The Chelsea 890HAFJW-B5AF or 890HAFJWB5AF is a 890 Series PTO assembly engineered for Allison 3000 MD and 4000 HD Series automatic transmissions. It mounts via a 10-bolt pattern and uses hydraulic PowerShift engagement. The SAE C ("XS") output shaft delivers a continuous-duty torque rating of 670 lb-ft, with intermittent torque capability exceeding 501 lb-ft. Shaft power output reaches 64 HP at 500 RPM and 128 HP at 1,000 RPM. The wet-spline lubrication design extends PTO and pump shaft service life, and an extended output shaft improves pump clearance at installation. A genuine Chelsea part, sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
Fits Allison 3000 MD and 4000 HD Series automatic transmissions
10-bolt mounting configuration
Hydraulic PowerShift engagement
SAE C ("XS") output shaft with wet-spline lubrication for extended shaft life
Continuous-duty torque rating: 670 lb-ft; intermittent torque: 501+ lb-ft
Extended output shaft for improved pump clearance
Tech Specs
- Transmission Manufacturer: Allison 3000 MD and 4000 HD Series
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Output Shaft Type: SAE C ("XS") Output
- Outlet Flange Type: SAE C
- Continuous Torque: 670 lb-ft (908 Nm) - check application pages for actual torque ratings
- Intermittent Torque: 501+ lb-ft (501+ Nm)
- Output Power: 56+ HP (51+ kW)
- Shaft Power at 500 RPM: 64 HP (48 kW)
- Shaft Power at 1,000 RPM: 128 HP (95 kW)
- Lubrication: Wet Spline
- Product Series: 890
Additional Information
