The Chelsea 890 Series Power Take-Off, part number 890UDFJW-B5XS or 890UDFJWB5XS, is a hydraulic PowerShift PTO engineered for Allison 3000 MD and 4000 HD Series transmissions. The 890 Series mounts via a 10-bolt pattern and positions the pump output flange to the rear of the transmission, placing the SAE C output shaft where clearance is tightest. A one-piece main shaft eliminates the input splines found in PTO-plus-extension configurations. Continuous-duty torque reaches 670 ft-lbs, with intermittent torque rated at 501+ lb-ft. Shaft power is 64 HP at 500 RPM and 128 HP at 1,000 RPM. The wet-spline output ("W" designation) lubricates the pump shaft interface to reduce wear in demanding duty cycles. Typical applications include aerial trucks, fire and rescue, refuse trucks, and truck cranes. Call us to confirm proper fit for your application.
Features
Chelsea 890 Series PTO - part number 890UDFJW-B5XS
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mount
Hydraulic PowerShift engagement with SAE C output flange and SAE C (XS) extended output shaft
One-piece main shaft eliminates input splines between PTO and output extension for improved reliability
Continuous-duty torque rating: 670 ft-lbs; intermittent torque: 501+ lb-ft
Shaft power output: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Wet-spline output lubricates the PTO/pump shaft interface to extend service life in high-demand applications
Tech Specs
- Transmission Fit: 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) Extended Output
- 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 (500 RPM), 128 HP (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.
