The Chelsea 890 Series Power Take-Off, part number 890UEFJW-B5XK or 890UEFJWB5XK, is a hydraulic PowerShift PTO engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. The 890 Series mounts via a 10-bolt pattern and positions the pump output at the rear of the transmission, fitting between the transmission and the frame rail to maximize pump clearance. The main shaft is a one-piece design, eliminating the input splines between the PTO and output extension. Wet Spline output technology protects both the PTO and pump shaft under demanding continuous-duty cycles. Continuous-duty torque reaches 670 ft-lb, with intermittent torque capability rated at 501+ lb-ft. Shaft power output is 64 HP at 500 RPM and 128 HP at 1,000 RPM. The SAE C output flange is designated XS. Common applications for this series include aerial trucks, fire and rescue trucks, refuse trucks, and truck cranes. Call us to confirm proper fit for your specific vehicle configuration.
Features
Hydraulic PowerShift (hot shift) engagement for Allison 3000 MD and 4000 HD Series transmissions
10-bolt mounting type with SAE C (XS) output flange
One-piece main shaft eliminates input splines between PTO and output extension, improving pump clearance
Wet Spline output technology extends PTO and pump shaft life in demanding applications
Continuous-duty torque rating of 670 ft-lb; intermittent torque 501+ lb-ft
Shaft power output: 64 HP at 500 RPM, 128 HP at 1,000 RPM
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) 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) / 48 kW (500 RPM), 95 kW (1,000 RPM)
Additional Information
The Chelsea 890 Series is a single-unit PTO, not a PTO with a separate extension. The clutch is located at the rear of the PTO housing so the gear section tucks tightly against the transmission for improved frame-rail clearance. The unit includes an additional bracket at the rear of the transmission for support, in addition to the standard 10-bolt side-mount pattern. The 890 Series can be ordered for transmissions equipped with or without a cooler, retarder, or both. Typical markets include aerial, fire and rescue, refuse, and defense applications. Also referenced as SP890UEFJW-B5XK in some catalog listings.Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
