The Chelsea 890LFFJW-B5AZ or 890LFFJWB5AZ is a hydraulic PowerShift PTO assembly from the Chelsea 890 Series, engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern with an additional rear-of-transmission support bracket, positioning the SAE C output flange behind the transmission to gain clearance where side-mount PTOs fall short. The one-piece main shaft eliminates the input splines that a PTO-plus-extension arrangement creates, and the clutch sits at the rear of the housing so the gear section tucks tightly against the transmission. Continuous torque is rated at 670 lb-ft, with shaft power of 64 HP at 500 RPM and 128 HP at 1,000 RPM. Wet-spline output lubrication is standard, protecting both PTO and pump shaft splines under sustained, demanding duty. Call us to confirm proper fit for your application.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mounting pattern
Hydraulic PowerShift (hot shift) engagement for on-the-go operation
SAE C ("XS") output flange and extended one-piece main shaft for improved pump clearance
Continuous torque rating: 670 lb-ft; intermittent torque: 501+ lb-ft
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Wet-spline output lubrication standard to extend PTO and pump shaft life
Tech Specs
- Transmission Application: Allison 3000 MD Series, Allison 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
- Continuous Torque: 670 lb-ft (see application pages for actual ratings)
- Intermittent Torque: 501+ lb-ft
- Shaft Power: 64 HP (500 RPM), 128 HP (1,000 RPM)
- Output Power: 56+ HP
- Lubrication: Wet Spline
Additional Information
