The Chelsea 890XBFJW-B5XS or 890XBFJWB5XS is a hydraulic PowerShift PTO assembly from the 890 Series, engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It uses a 10-bolt mounting configuration and delivers a continuous torque rating of 670 lb-ft with intermittent torque capability of 501+ lb-ft. The SAE C output shaft uses Wet Spline technology to extend pump shaft life in demanding duty cycles. Shaft power output reaches 64 HP at 500 RPM and 128 HP at 1,000 RPM. The 890 Series design places the PTO/pump mounting flange at the rear of the transmission on a one-piece mainshaft, improving pump clearance without a separate extension. Common applications include aerial trucks, fire and rescue, refuse, and truck crane work. Call us to confirm proper fit for your Allison-equipped chassis.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mounting
Hydraulic PowerShift (hot-shift) engagement
Continuous torque rating: 670 lb-ft; intermittent torque: 501+ lb-ft
SAE C Wet Spline output shaft extends PTO and pump shaft life
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
One-piece mainshaft design relocates pump flange to rear of transmission for improved clearance
Tech Specs
- Transmission Application: 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)
- Lubricant: Wet Spline
- Continuous Torque: 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.
