The Chelsea 890 Series Power Take-Off, part number 890RAFJW-B5XV or 890RAFJWB5XV, is a hydraulic hot-shift PTO engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. The 10-bolt mounting configuration and SAE C output flange position the pump to the rear of the transmission, carving out clearance between the unit and the frame rail without requiring a separate extension housing. The main shaft is a single one-piece design, eliminating input splines between the PTO body and the output extension. Wet-spline output technology protects the pump shaft under continuous demand. The series carries a continuous-duty torque rating up to 670 ft-lbs and delivers up to 128 HP at 1,000 RPM. Applications include aerial trucks, fire and rescue, refuse, and truck crane work. Call us to confirm proper fit for your specific transmission configuration.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mount
Hydraulic PowerShift (hot-shift) engagement
SAE C (XS) output shaft and outlet flange
Continuous-duty torque rating up to 670 ft-lbs; intermittent torque 501+ ft-lbs
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Wet-spline output extends PTO and pump shaft life in high-demand service
One-piece main shaft eliminates input splines between PTO body and output extension
Tech Specs
- Transmission Fit: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift (hot-shift)
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C (XS)
- Lubricant: Wet Spline
- Continuous Torque: 670 ft-lbs (check application pages for actual torque ratings)
- Intermittent Torque: 501+ ft-lbs
- 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.
