The Chelsea 890CEFJW-B3CS or 890CEFJWB3CS is a hydraulic PowerShift power take-off from the Chelsea 890 Series, engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern and delivers an SAE C ("XS") output shaft with wet-spline lubrication to extend PTO and pump shaft service life. The 890 Series positions the pump mounting flange to the rear of the transmission, improving clearance between the pump and the frame rail. Shaft power reaches 64 HP at 500 RPM and 128 HP at 1,000 RPM. Intermittent torque rating is 501+ lb-ft; continuous-duty torque is up to 670 lb-ft. The one-piece main shaft eliminates the input splines found between a conventional PTO and a bolt-on extension. Common applications include aerial trucks, fire and rescue trucks, refuse trucks, and truck cranes. Call us to confirm proper fit for your specific transmission configuration.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mounting
Hydraulic PowerShift (hot shift) engagement
SAE C ("XS") wet-spline output shaft for extended pump spline life
Continuous-duty torque rating up to 670 lb-ft; intermittent torque 501+ lb-ft
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
One-piece main shaft eliminates input splines between PTO body and output extension
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") Wet Spline
- Lubricant: Wet Spline
- Intermittent Torque: 501+ lb-ft
- Continuous Torque: Up to 670 lb-ft (verify on application pages for exact rating)
- 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
The Chelsea 890 Series mounts like a standard side-mounted PTO but adds a support bracket at the rear of the transmission. The clutch is located at the rear of the PTO housing, allowing the gear section to sit tightly against the transmission for maximum clearance between the pump and the frame rail. The 890 Series is a single-unit design, not a PTO paired with a separate extension tube. Typical markets served include aerial, fire and rescue, refuse, snow and ice removal, and defense applications. Also referenced as part number SP890CEFJW-B3CS.Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
