The Chelsea 890LFFJW-K5XS or 890LFFJWK5XS is a hydraulic PowerShift PTO assembly engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. Part of the Chelsea 890 Series, it uses a 10-bolt mounting pattern and positions the pump output flange to the rear of the transmission, improving clearance between the PTO and frame rail. The SAE C output shaft uses Wet Spline technology to reduce wear on the PTO and pump shaft splines under continuous use. Continuous torque reaches 670 lb-ft, with intermittent torque rated at 501+ lb-ft. Shaft power output is 64 HP at 500 RPM and 128 HP at 1,000 RPM. Common applications include aerial trucks, fire and rescue, refuse, and truck crane installations. 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 (hot shift) engagement
SAE C output shaft with Wet Spline technology for extended pump shaft life
Continuous torque rating: 670 lb-ft; intermittent torque: 501+ lb-ft
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Extended shaft design moves pump output to rear of transmission for improved clearance
Tech Specs
- Transmission Compatibility: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Output Shaft Type: SAE C Wet Spline
- Outlet Flange Type: SAE C
- Continuous Torque: 670 lb-ft (check application pages for actual torque ratings)
- Intermittent Torque: 501+ lb-ft
- Output Power: 56+ HP
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
- Lubrication: Wet Spline
Additional Information
Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
