The Chelsea 890HAFJW-B5AZ or 890HAFJWB5AZ is a 890 Series Power Takeoff assembly built for Allison 3000 MD and 4000 HD series transmissions. It mounts with a 10-bolt pattern and shifts via hydraulic PowerShift engagement. The SAE C ("XS") output shaft features an extended design to improve pump clearance, and the wet-spline lubrication option protects PTO and pump shaft life under sustained use. Continuous-duty torque rating reaches 670 lb-ft (908 Nm), with shaft power output of 64 HP at 500 RPM and 128 HP at 1,000 RPM. Call us to confirm proper fit for your application.
Features
Fits Allison 3000 MD and 4000 HD series transmissions
Hydraulic PowerShift engagement
10-bolt mounting pattern
SAE C ("XS") extended output shaft for improved pump clearance
Wet-spline lubrication to extend PTO and pump shaft service life
670 lb-ft (908 Nm) continuous-duty torque rating; 128 HP shaft output at 1,000 RPM
Tech Specs
- Transmission Application: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Output Shaft Type: SAE C ("XS") Extended Output
- Outlet Flange Type: SAE C
- Lubrication: Wet Spline
- Continuous Torque: 670 lb-ft (908 Nm) - check application pages for actual rating
- Intermittent Torque: 501+ lb-ft (501+ Nm)
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 64 HP (48 kW) at 500 RPM; 128 HP (95 kW) at 1,000 RPM
Additional Information
Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
