The Chelsea 890RCFJW-G5XK or 890RCFJWG5XK is a hydraulic PowerShift PTO assembly engineered for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern and uses an SAE C flange output with wet-spline technology to extend pump shaft life under continuous-duty use. The 890 Series positions the pump output to the rear of the transmission, improving clearance between the PTO and the frame rail. A one-piece main shaft eliminates the input splines between the PTO and output extension, and a rear-mounted clutch lets the housing tuck tightly against the transmission. Continuous-duty torque rating reaches 670 ft-lb. Shaft power output is 64 HP at 500 RPM and 128 HP at 1,000 RPM. Typical applications include aerial trucks, fire and rescue vehicles, refuse trucks, and truck cranes. Call us to confirm proper fit for your specific transmission configuration.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mounting
Hydraulic PowerShift (hot shift) engagement for on-the-go operation
SAE C outlet flange with SAE "C" (XS) wet-spline output shaft extends pump shaft life
Continuous-duty torque rating up to 670 ft-lb; intermittent torque rated at 501+ ft-lb
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
One-piece main shaft and rear-mounted clutch improve pump clearance between transmission and frame rail
Tech Specs
- Transmission Manufacturer: Allison
- Product Series: 890
- Input Gear Designator: FJ - Allison 3000 MD and 4000 HD Series
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C, SAE "C" (XS) Output
- Lubricant: Wet Spline
- 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 (48 kW at 500 RPM, 95 kW at 1,000 RPM)
Additional Information
Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
