The Chelsea 890LBFJW-B5XV or 890LBFJWB5XV is a hydraulic PowerShift PTO assembly engineered specifically for Allison 3000 MD and 4000 HD series transmissions. It mounts with a 10-bolt pattern and uses a one-piece main shaft that relocates the pump output to the rear of the transmission, improving clearance between the PTO and the frame rail without requiring a separate extension. The SAE C output flange pairs with an SAE "C" (XS) output shaft. Wet Spline technology is built in, extending pump shaft life under demanding duty cycles. Continuous torque reaches 670 lb-ft; intermittent torque rating is 501+ lb-ft. Shaft power output is 64 HP at 500 RPM and 128 HP at 1000 RPM. A genuine Chelsea part from Pro Gear and Transmission. Call us to confirm proper fit for your application.
The Chelsea 890 Series is designed for applications where pump clearance and high continuous torque are critical priorities. Typical applications include aerial trucks, fire and rescue trucks, refuse trucks, truck cranes, and snow and ice equipment. The unit mounts like a standard side-mounted PTO but includes an additional support bracket at the rear of the transmission. The clutch is located at the rear of the PTO housing, allowing the gear section to tuck tightly against the transmission for maximum clearance. The 890 Series accommodates transmissions configured with or without a cooler, retarder, or both.
Features
Fits Allison 3000 MD and 4000 HD series transmissions via 10-bolt mounting
Hydraulic PowerShift engagement for on-the-go operation
One-piece main shaft relocates pump output to rear of transmission for improved clearance
SAE C outlet flange with SAE "C" (XS) output shaft
Wet Spline output extends PTO and pump shaft life in high-demand applications
Continuous torque rating up to 670 lb-ft; shaft power 64 HP at 500 RPM, 128 HP at 1000 RPM
Tech Specs
- Transmission Application: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C (XS) Output
- Continuous Torque: 670 lb-ft (check application pages for actual torque ratings)
- Intermittent Torque: 501+ lb-ft
- Output Power: 56+ HP
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1000 RPM
- Lubricant: Wet Spline
Additional Information
The Chelsea 890 Series is designed for applications where pump clearance and high continuous torque are critical priorities. Typical applications include aerial trucks, fire and rescue trucks, refuse trucks, truck cranes, and snow and ice equipment. The unit mounts like a standard side-mounted PTO but includes an additional support bracket at the rear of the transmission. The clutch is located at the rear of the PTO housing, allowing the gear section to tuck tightly against the transmission for maximum clearance. The 890 Series accommodates transmissions configured with or without a cooler, retarder, or both.
Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
