The Chelsea 890 Series Power Take-Off, part number 890JBFJW-B3CS or 890JBFJWB3CS, is a hydraulic PowerShift PTO built for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern with an SAE C outlet flange and SAE C (XS) output shaft, and shifts hydraulically under load. The 890 Series positions the pump mounting flange behind the transmission, freeing clearance between the PTO and the frame rail. A one-piece main shaft eliminates input splines between the PTO and output extension, and the Wet Spline output extends pump shaft life in demanding duty cycles. Continuous-duty torque for the 890 Series reaches up to 670 ft-lb, with intermittent torque rated at 501+ ft-lb. Shaft power output is 64 HP at 500 RPM and 128 HP at 1,000 RPM. Common applications include fire and rescue trucks, aerial trucks, refuse trucks, and truck cranes. 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) operation
10-bolt mounting with SAE C outlet flange and SAE C (XS) output shaft
Wet Spline output extends PTO and pump shaft life under demanding conditions
One-piece main shaft eliminates input splines between PTO body and output extension
Continuous-duty torque up to 670 ft-lb; shaft power 64 HP at 500 RPM, 128 HP at 1,000 RPM
Tech Specs
- Transmission Manufacturer: Allison
- Product Series: 890
- Input Gear Designator: FJ (Allison 3000 MD and 4000 HD Series)
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C (XS)
- Lubricant: Wet Spline
- Continuous Torque: Up to 670 lb-ft (check application pages for actual torque ratings)
- Intermittent Torque: 501+ lb-ft
- 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.
