The Chelsea 890XBFJW-N5AC is a hydraulic PowerShift Power Take-Off from the Chelsea 890 Series, engineered specifically for Allison 3000 (MD) and 4000 (HD) Series transmissions. The 890 Series mounts via a 10-bolt flange and positions the pump output to the rear of the transmission, improving clearance in tight frame-rail applications. The SAE C output shaft uses Wet Spline technology to extend PTO and pump shaft life under demanding, continuous-duty conditions. The one-piece main shaft eliminates input splines between the PTO and the output extension, and the rear-mounted clutch allows the housing and gear section to tuck tightly against the transmission. The 890 Series is rated for intermittent torque of 501 ft-lb or more and delivers up to 128 HP at 1,000 RPM. Available from Pro Gear and Transmission.
Features
Chelsea 890 Series PTO, part number 890XBFJW-N5AC
Designed for Allison 3000 (MD) and 4000 (HD) Series transmissions
10-bolt mounting flange with rear-of-transmission pump output location
Hydraulic PowerShift (hot shift) engagement
SAE C output shaft with Wet Spline technology for extended spline life
Series-rated intermittent torque 501+ ft-lb; up to 128 HP at 1,000 RPM
Tech Specs
- Product Series: Chelsea 890
- Part Number: 890XBFJW-N5AC
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Input Gear Designator: FJ - Allison 3000 (MD) and 4000 (HD) Series
- Output Shaft Type: SAE C with Wet Spline
- Outlet Flange Type: SAE C
- Intermittent Torque Rating (series): 501+ lb-ft
- Output Power (series): 56+ HP / 51+ kW
- Shaft Power (series): 64 HP at 500 RPM; 128 HP at 1,000 RPM
Additional Information
The Chelsea 890 Series is a single-unit design, not a PTO with a separate extension. The clutch is located at the rear of the PTO housing, allowing the gear section to sit close to the transmission for improved frame-rail clearance. The 890 Series can be configured for transmissions with or without a cooler, a retarder, or both. Typical applications for this series include fire and rescue trucks, aerial trucks, refuse trucks, pumper cleaners, and truck cranes.Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
