The Chelsea 890 Series Power Take-Off, part number 890LDFJW-D5XY or 890LDFJWD5XY, is a hydraulic hot-shift PTO engineered for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern and uses a hydraulic PowerShift engagement. The SAE C ("XS") output shaft runs on Wet Spline Technology to extend PTO and pump shaft life in demanding duty cycles. The 890 Series moves the pump mounting flange to the rear of the transmission, improving clearance without relying on a separate extension - the main shaft is a single one-piece design. Continuous-duty torque reaches 670 ft-lb, with intermittent torque rated at 501+ ft-lb. Shaft power runs 64 HP at 500 RPM and 128 HP at 1,000 RPM. Typical applications include aerial trucks, fire and rescue, refuse trucks, truck cranes, and snow and ice equipment. Call us to confirm proper fit for your application.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mounting
Hydraulic PowerShift engagement for on-the-go actuation
Single one-piece main shaft with SAE C ("XS") output - no input splines between PTO and extension
Wet Spline output extends PTO and pump shaft life under demanding conditions
Continuous-duty torque rating up to 670 ft-lb; intermittent torque 501+ ft-lb
Shaft power output: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Tech Specs
- Transmission Application: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Output Shaft Type: SAE C ("XS") Wet Spline
- Outlet Flange Type: SAE C
- Continuous Torque: 670 ft-lb (check application pages for actual torque ratings)
- Intermittent Torque: 501+ ft-lb
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 64 HP at 500 RPM; 128 HP at 1,000 RPM
- Lubricant: Wet Spline
Additional Information
The 890 Series mounts like a standard side-mounted PTO but adds a support bracket at the rear of the transmission. The clutch is positioned at the rear of the PTO housing, allowing the gear section to sit tight to the transmission case for improved frame-rail clearance. The unit accommodates transmissions equipped with or without a cooler, retarder, or both. The part number 890LDFJW-D5XY decodes as: 890 Series, L = SAE C output flange, D = specific output configuration, FJ = Allison 3000 MD and 4000 HD input gear, W = Wet Spline lubrication.Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
