The Chelsea 890HCFJW-B5AF or 890HCFJWB5AF is a hydraulic PowerShift PTO Assembly from the Chelsea 890 Series, engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern and features an SAE C (XS) output shaft with Wet Spline lubrication to extend pump shaft life in demanding duty cycles. The 890 Series positions the pump mounting flange at the rear of the transmission, fitting between the transmission and frame rail to maximize pump clearance. A one-piece main shaft eliminates input splines between the PTO and the output extension, and the clutch sits at the rear of the housing so the gear section tucks tightly against the transmission. Continuous-duty torque for the 890 Series reaches 670 ft-lb, with intermittent ratings beginning at 501 ft-lb. Shaft power output is 64 HP at 500 RPM and 128 HP at 1,000 RPM. Common applications include aerial trucks, fire and rescue trucks, refuse trucks, and truck cranes. Call us to confirm the right configuration for your transmission and pump setup.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions (FJ input gear designator)
Hydraulic PowerShift engagement - shifts under load without interrupting drive
10-bolt mounting with rear-of-transmission pump flange location for improved clearance
SAE C (XS) output shaft with Wet Spline technology to extend PTO and pump shaft life
Continuous-duty torque up to 670 ft-lb; intermittent torque rating 501+ ft-lb
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Tech Specs
- Transmission Application: 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
- Lubricant/Spline Type: Wet Spline
- Intermittent Torque: 501+ lb-ft
- Continuous Torque: 670 lb-ft (check application pages for actual torque ratings)
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 64 HP (500 RPM), 128 HP (1,000 RPM) / 48 kW (500 RPM), 95 kW (1,000 RPM)
- Product Series: Chelsea 890
Additional Information
