The Chelsea 890LEFJW-D5DA or 890LEFJWD5DA is a hydraulic hot-shift power take-off assembly built for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern and delivers an SAE C ("XS") output flange with wet-spline technology to reduce wear on the pump shaft in demanding duty cycles. The 890 Series design positions the pump mounting flange at the rear of the transmission, placing the clutch at the back of the PTO housing so the gear section tucks tightly against the transmission for improved pump clearance. The main shaft is a single-piece design, eliminating the input splines that a PTO-plus-extension arrangement would require. Continuous-duty torque reaches 670 ft-lb, and the unit shifts hydraulically under power. A genuine Chelsea part from Pro Gear and Transmission. 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) engagement
10-bolt mounting with SAE C ("XS") output flange
Wet-spline output extends PTO and pump shaft life in high-demand cycles
Continuous-duty torque rating up to 670 ft-lb; intermittent torque 501+ ft-lb
Rear-of-transmission pump location improves clearance; one-piece main shaft eliminates intermediate input splines
Tech Specs
- Transmission: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift (hot-shift)
- Output Shaft Type: SAE C ("XS") Output
- Outlet Flange Type: SAE C
- Lubricant / Spline: Wet Spline
- Continuous Torque: 670 ft-lb (check application pages for actual torque ratings)
- Intermittent Torque: 501+ ft-lb
- Output Power: 56+ HP
- Shaft Power at 500 RPM: 64 HP
- Shaft Power at 1000 RPM: 128 HP
Additional Information
Parts manual and diagrams: Chelsea 890 Series PTO parts list with prices
