The Chelsea 890EHFJW-B5AF or 890EHFJWB5AF is a hydraulic hot-shift Power Take-Off from the Chelsea 890 Series, engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern and uses an SAE C (XS) output shaft with Wet Spline technology to extend PTO and pump shaft life under demanding duty cycles. Continuous-duty torque rating reaches 670 ft-lb, and shaft power output is 64 HP at 500 RPM and 128 HP at 1,000 RPM. The one-piece main shaft eliminates input splines between the PTO and output extension, while the rear-mounted clutch tucks the housing tightly to the transmission for improved frame-rail clearance. Common applications include aerial trucks, fire and rescue, refuse, and truck crane equipment. Call us to confirm proper fit for your Allison-equipped vehicle.
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 technology for extended pump spline life
Continuous-duty torque rating up to 670 ft-lb; intermittent torque 501+ ft-lb
Shaft power output: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Rear-mounted clutch and one-piece main shaft improve pump clearance between transmission and frame rail
Tech Specs
- Transmission Application: Allison 3000 MD and 4000 HD Series
- Product Series: Chelsea 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift (hot shift)
- Output Shaft Type: SAE C (XS)
- Outlet Flange Type: SAE C
- Lubricant/Output: 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 and diagrams: Chelsea 890 Series PTO parts list with prices
