The Chelsea 890 Series Power Take-Off, part number 890RFFJW-K5XK or 890RFFJWK5XK, is a hydraulic PowerShift PTO engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. The 890 Series uses a 10-bolt mounting configuration and positions the pump output flange to the rear of the transmission, placing the SAE C output shaft behind the transmission rather than along the side. This one-piece main shaft design eliminates input splines between the PTO body and the output section, which the standard side-mount arrangement requires. The wet-spline output extends pump shaft service life under demanding duty cycles. Continuous-duty torque reaches 670 ft-lb, with intermittent capacity rated at 501 ft-lb or greater. Shaft power is 64 HP at 500 RPM and 128 HP at 1,000 RPM. Common applications include aerial trucks, fire and rescue vehicles, refuse trucks, and truck cranes. Call us to confirm proper fit for your specific Allison transmission configuration.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions (FJ input gear designator)
Hydraulic PowerShift engagement for on-the-go activation
10-bolt mounting with rear-positioned SAE C output flange for improved pump clearance
One-piece main shaft eliminates inter-unit input splines
Wet-spline output technology extends PTO and pump shaft service life
Continuous-duty torque rating of 670 ft-lb; shaft power 64 HP at 500 RPM, 128 HP at 1,000 RPM
Tech Specs
- Transmission Fitment: Allison 3000 MD and 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 (W)
- Continuous Torque: 670 ft-lb (see application pages for actual torque ratings)
- Intermittent Torque: 501+ ft-lb
- 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
