The Chelsea 890 Series Power Take-Off (part number 890EEFJW-B5XK or 890EEFJWB5XK) is a hydraulic PowerShift PTO engineered for Allison 3000 MD and 4000 HD Series transmissions. It mounts with a 10-bolt pattern and uses an SAE C ("XS") output shaft with wet-spline lubrication to extend pump shaft life in demanding service. The unit's continuous-duty torque rating reaches 670 ft-lb, with intermittent torque exceeding 501 ft-lb. Shaft power output is 64 HP at 500 RPM and 128 HP at 1,000 RPM. The 890 Series relocates the pump mounting flange to the rear of the transmission on a one-piece main shaft, improving clearance between the pump and frame rail. Typical applications include aerial trucks, fire and rescue trucks, refuse trucks, and truck cranes. Call us to confirm proper fit for your specific transmission and chassis configuration.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mounting
Hydraulic PowerShift (hot-shift) engagement
SAE C ("XS") output shaft with wet-spline lubrication for extended pump shaft life
Continuous-duty torque rating up to 670 ft-lb; intermittent torque exceeds 501 ft-lb
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
One-piece main shaft with rear-mounted clutch relocates pump output rearward for improved frame-rail clearance
Tech Specs
- Transmission Fitment: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Output Shaft Type: SAE C ("XS") Wet-Spline Output
- Outlet Flange Type: SAE C
- 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
- Lubricant: Wet Spline
Additional Information
Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
