The Chelsea 890RBFJW-D5XY or 890RBFJWD5XY is a hydraulic hot-shift Power Take-Off from Chelsea's 890 Series, engineered specifically 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 a wet-spline design that extends PTO and pump shaft life in demanding service. The unit delivers continuous-duty torque up to 670 ft-lbs and intermittent torque of 501+ ft-lbs, with shaft power of 64 HP at 500 RPM and 128 HP at 1,000 RPM. The one-piece main shaft eliminates inter-stage input splines, and the clutch is positioned at the rear of the PTO so the housing tucks tightly against the transmission, locating the SAE C output flange toward the rear for improved pump clearance. Common applications include aerial trucks, fire and rescue trucks, refuse trucks, and truck cranes. Call us to confirm proper fit for your specific Allison transmission configuration.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mounting
Hydraulic PowerShift (hot-shift) engagement
SAE C ("XS") wet-spline output shaft for extended PTO and pump spline life
Continuous-duty torque up to 670 ft-lbs; intermittent torque rated 501+ ft-lbs
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
One-piece main shaft with rear-positioned clutch improves pump clearance without an add-on extension
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") Wet-Spline Output
- Outlet Flange Type: SAE C
- Continuous Torque: 670 ft-lbs (check application pages for actual torque ratings)
- Intermittent Torque: 501+ ft-lbs
- 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.
