The Chelsea 890LEFJW-G5XY or 890LEFJWG5XY is a hydraulic PowerShift Power Take-Off from the Chelsea 890 Series, designed specifically for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern and features an SAE C ("XS") output flange with Wet Spline technology to extend PTO and pump shaft service life. The one-piece main shaft eliminates the input splines that typically exist between a PTO and an output extension, and the clutch is positioned at the rear of the housing so the gear section sits tight to the transmission for improved clearance. Continuous-duty torque for the 890 Series reaches 670 ft-lbs, with intermittent torque rated at 501+ ft-lbs. Shaft power output is 64 HP at 500 RPM and 128 HP at 1,000 RPM. Common applications for this series include aerial trucks, fire and rescue trucks, refuse trucks, and truck cranes. Call us to confirm proper fit for your specific transmission and chassis configuration.
The Chelsea 890 Series is a single-unit PTO - not a PTO paired with a separate extension. The one-piece main shaft eliminates input splines between the PTO body and the output, and the clutch is located at the rear of the housing so the gear section tucks tightly against the transmission. The assembly mounts like a standard side-mounted PTO but includes an additional bracket at the rear of the transmission for added support. It can be ordered for transmissions equipped with or without a cooler, a retarder, or both. Typical applications in this series include aerial trucks, fire and rescue trucks, refuse trucks, pumper cleaners, and truck cranes.
Features
Chelsea 890 Series PTO for Allison 3000 MD and 4000 HD Series transmissions
Hydraulic PowerShift (hot shift) engagement; 10-bolt mounting
SAE C ("XS") output shaft with Wet Spline technology to extend pump shaft life
Extended shaft design positions pump flange to the rear of the transmission for improved clearance
Continuous-duty torque rating: 670 ft-lbs; intermittent torque: 501+ ft-lbs
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Tech Specs
- Transmission: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Input Gear Designator: FJ - Allison 3000 MD and 4000 HD Series
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Output Shaft Type: SAE C ("XS") Output
- Outlet Flange Type: SAE C
- Lubricant: Wet Spline
- 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
Additional Information
The Chelsea 890 Series is a single-unit PTO - not a PTO paired with a separate extension. The one-piece main shaft eliminates input splines between the PTO body and the output, and the clutch is located at the rear of the housing so the gear section tucks tightly against the transmission. The assembly mounts like a standard side-mounted PTO but includes an additional bracket at the rear of the transmission for added support. It can be ordered for transmissions equipped with or without a cooler, a retarder, or both. Typical applications in this series include aerial trucks, fire and rescue trucks, refuse trucks, pumper cleaners, and truck cranes.
