The Chelsea 890 Series Power Take-Off, part number 890LFFJW-G5XY or 890LFFJWG5XY, is a hydraulic PowerShift PTO engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It uses a 10-bolt mounting pattern and features an SAE C ("XS") output shaft with Wet Spline lubrication to reduce wear on the PTO and pump shaft in demanding cycles. The one-piece main shaft eliminates the input splines found on standard extension-based designs, and the clutch is positioned at the rear of the housing so the gear section sits tight against the transmission, maximizing frame-rail clearance. Continuous-duty torque is rated up to 670 ft-lb, with intermittent torque exceeding 501 ft-lb. Shaft power output reaches 64 HP at 500 RPM and 128 HP at 1,000 RPM. Common applications include aerial trucks, fire and rescue, refuse trucks, and truck cranes. Call us to confirm proper fit for your transmission configuration.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mounting
Hydraulic PowerShift engagement for on-the-go PTO activation
SAE C ("XS") Wet Spline output shaft extends pump spline service life
One-piece main shaft design eliminates input splines between PTO and output extension
Continuous-duty torque rating up to 670 ft-lb; intermittent torque 501+ ft-lb
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Tech Specs
- Transmission Manufacturer: Allison 3000 MD & 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Output Shaft Type: SAE C ("XS") Output
- Outlet Flange Type: SAE C
- 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)
- Dimensions (H x W x L): 13 in. x 11.75 in. x 31.38 in.
Additional Information
Parts manual and diagrams: Chelsea 890 Series PTO parts list with prices
