The Chelsea 890TCFJW-B5XK or 890TCFJWB5XK is a hydraulic PowerShift PTO from the Chelsea 890 Series, designed specifically for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern and delivers an SAE C ("XS") output shaft with wet-spline lubrication to protect pump splines in demanding service. Shaft power reaches 64 HP at 500 RPM and 128 HP at 1,000 RPM, with a continuous-duty torque rating up to 670 ft-lb. The 890 Series design positions the PTO mounting flange at the rear of the transmission, placing the pump output rearward for improved clearance between the pump and the frame rail. The one-piece main shaft eliminates input splines between the PTO and the output extension, and the clutch is located at the rear of the housing to keep the gear section tucked tightly to the transmission. Common applications include fire and rescue trucks, aerial units, truck cranes, and refuse trucks. Call us to confirm proper fit for your specific Allison transmission configuration.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions (FJ input gear designator)
Hydraulic PowerShift (hot shift) engagement
10-bolt mounting with SAE C ("XS") output shaft and wet-spline lubrication
Continuous-duty torque rating up to 670 ft-lb; intermittent torque 501+ ft-lb
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Rear-positioned pump flange improves clearance between pump and frame rail
Tech Specs
- Product Series: 890
- Transmission Application: Allison 3000 MD and 4000 HD Series (FJ input gear designator)
- 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
- Continuous Torque: 670 ft-lb (check application pages for actual torque ratings)
- Intermittent Torque: 501+ ft-lb
- 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.
