The Chelsea 890HEFJW-B5AF or 890HEFJWB5AF is a hydraulic powershift PTO from the Chelsea 890 Series, engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It uses a 10-bolt mounting configuration and an SAE C (XS) output shaft with wet-spline technology to extend pump spline life under demanding duty cycles. The 890 Series locates the pump mounting flange to the rear of the transmission, giving you clearance where a standard side-mounted PTO falls short. A one-piece main shaft eliminates the input splines found on PTO-plus-extension designs. Continuous torque rating reaches 670 ft-lb; intermittent torque is rated at 501+ ft-lb. Common applications include fire and rescue, aerial, refuse, and truck crane work. A genuine Chelsea part, sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
10-bolt mounting for Allison 3000 MD and 4000 HD Series transmissions
Hydraulic PowerShift (hot shift) engagement
SAE C ("XS") output shaft with wet-spline lubrication to extend pump spline life
Continuous-duty torque rating up to 670 ft-lb; intermittent torque 501+ ft-lb
Rear-located pump flange improves clearance between transmission and frame rail
Single one-piece main shaft design eliminates input splines between PTO and output extension
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") Output
- Outlet Flange Type: SAE C
- Lubricant: 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 1000 RPM
Additional Information
Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
