Chelsea 890 Series Power Take-Off Assembly part number 890LEFJW-B5XK or 890LEFJWB5XK is engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern and shifts hydraulically (PowerShift), making it a direct hot-shift unit. The SAE C (XS) output shaft uses wet-spline technology to extend pump shaft life under demanding duty cycles. Shaft power output reaches 64 HP at 500 RPM and 128 HP at 1,000 RPM. Continuous torque is rated at 670 lb-ft, with intermittent torque exceeding 501 lb-ft. The 890 Series relocates the PTO/pump mounting flange to the rear of the transmission, improving pump clearance without requiring a separate extension. Common platforms include aerial trucks, fire and rescue, refuse, and truck cranes. Call us to confirm proper fit for your application.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions (FJ input gear designator)
Hydraulic PowerShift (hot-shift) operation
10-bolt mounting with SAE C (XS) output shaft
Wet-spline output extends PTO and pump shaft service life
Continuous torque rated to 670 lb-ft; intermittent torque 501+ lb-ft
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
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 (XS)
- 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 (48 kW) at 500 RPM; 128 HP (95 kW) at 1,000 RPM
Additional Information
