The Chelsea 890 Series PTO Assembly, part number 890LFFJW-B5ZS or 890LFFJWB5ZS, is a hydraulic hot-shift power take-off engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern and delivers a continuous-duty torque rating of up to 670 ft-lb through an SAE C ("XS") output shaft, with shaft power of 64 HP at 500 RPM and 128 HP at 1,000 RPM. The extended one-piece main shaft moves the pump mounting flange to the rear of the transmission, creating clearance where space is tight. The wet-spline output lubrication extends pump shaft life in demanding duty cycles. Common platforms include aerial trucks, fire and rescue apparatus, truck cranes, and refuse trucks. A genuine Chelsea part, available from Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mounting
Hydraulic PowerShift (hot-shift) engagement for on-the-fly operation
SAE C ("XS") output shaft with wet-spline lubrication for extended pump shaft life
Continuous-duty torque rating up to 670 ft-lb; intermittent torque 501+ lb-ft
Shaft power output: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Extended one-piece main shaft relocates pump flange to rear of transmission for improved clearance
Tech Specs
- Transmission: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift (hot-shift)
- Output Shaft Type: SAE C ("XS") Output
- Outlet Flange Type: SAE C
- Lubricant/Spline: 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 and diagrams: Chelsea 890 Series PTO parts list with prices
