The Chelsea 890 Series Power Take-Off Assembly, part number 890HBFJW-K5XV or 890HBFJWK5XV, is engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It uses a 10-bolt mounting configuration and delivers a continuous-duty torque rating up to 670 ft-lbs, with intermittent torque exceeding 501 lb-ft. Shaft power output reaches 64 HP at 500 RPM and 128 HP at 1,000 RPM. The SAE C output flange positions pump mounting to the rear of the transmission, improving clearance without the need for a separate extension. A Wet Spline output and Hydraulic PowerShift engagement complete the package. Commonly specified for aerial trucks, fire and rescue, and refuse trucks. Call us to confirm proper fit for your application.
The Chelsea 890 Series is a single-unit design with a one-piece main shaft, eliminating the input splines between the PTO body and the output extension. The clutch assembly is positioned at the rear of the housing, allowing the gear section to sit tight against the transmission for maximum frame-rail clearance. An additional rear bracket supplements the standard side-mount attachment for added rigidity. The 890 Series can be configured for transmissions equipped with a cooler, a retarder, both, or neither. Typical applications include aerial work trucks, fire and rescue pumpers, truck cranes, and refuse vehicles where pump space is limited and high continuous torque is required.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mount
Hydraulic PowerShift engagement for on-the-go PTO operation
SAE C output shaft relocates pump flange to rear of transmission for improved clearance
Continuous-duty torque rating up to 670 ft-lbs; intermittent torque exceeds 501 lb-ft
Wet Spline output extends PTO and pump shaft service life in demanding conditions
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Tech Specs
- Transmission Fit: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C (XS) Output
- Continuous Torque: 670 lb-ft (check application pages for actual torque rating)
- 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
- Lubricant/Spline Type: Wet Spline
- Input Gear Designator: FJ
Additional Information
The Chelsea 890 Series is a single-unit design with a one-piece main shaft, eliminating the input splines between the PTO body and the output extension. The clutch assembly is positioned at the rear of the housing, allowing the gear section to sit tight against the transmission for maximum frame-rail clearance. An additional rear bracket supplements the standard side-mount attachment for added rigidity. The 890 Series can be configured for transmissions equipped with a cooler, a retarder, both, or neither. Typical applications include aerial work trucks, fire and rescue pumpers, truck cranes, and refuse vehicles where pump space is limited and high continuous torque is required.
