The Chelsea 890 Series Power Take-Off, part number 890XAFJW-D5XY or 890XAFJWD5XY, is a hydraulic hot-shift PTO engineered for Allison 3000 MD and 4000 HD Series transmissions. It uses a 10-bolt mounting configuration and positions the pump output flange at the rear of the transmission, tucking the housing tightly against the gearbox to clear the frame rail. The SAE C output shaft uses Wet Spline Technology to extend spline life under demanding duty cycles. A one-piece main shaft eliminates the input splines found between a standard PTO and a bolt-on extension, and the clutch is located at the rear of the housing to allow the gear section to sit flush against the transmission. Continuous-duty torque is rated up to 670 ft-lb, with intermittent torque exceeding 501 ft-lb. Shaft power reaches 64 HP at 500 RPM and 128 HP at 1,000 RPM. Common applications include aerial trucks, fire and rescue apparatus, refuse trucks, and truck cranes. 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 (hot-shift) engagement for on-the-go PTO activation
SAE C output shaft with Wet Spline Technology to extend PTO and pump shaft life
One-piece main shaft eliminates input splines between PTO body and output extension
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 (hot-shift)
- Output Shaft Type: SAE C ("XS") with 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 (48 kW) at 500 RPM; 128 HP (95 kW) at 1,000 RPM
- Lubricant: 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.
