The Chelsea 890NFFJW-B3XY is a hydraulic PowerShift Power Take-Off from the Chelsea 890 Series, engineered specifically for Allison 3000 and 4000 Series transmissions. The 890 Series relocates the PTO and pump mounting flange to the rear of the transmission, positioning the pump output behind the gearbox for improved clearance in tight frame-rail installations. Mounting is via a 10-bolt pattern with an SAE C outlet flange and SAE C wet-spline output shaft. The wet-spline output extends PTO and pump shaft life under continuous, high-demand operation. Common applications for this series include aerial trucks, fire and rescue apparatus, truck cranes, and refuse vehicles. Part number 890NFFJW-B3XY is sold by Pro Gear and Transmission.
Features
Fits Allison 3000 (MD) and 4000 (HD) Series transmissions
Hydraulic PowerShift (hot shift) engagement
10-bolt mounting pattern
SAE C outlet flange with SAE C wet-spline output shaft
Rear-of-transmission pump flange location for improved pump clearance
Wet-spline output technology extends PTO and pump shaft service life
Tech Specs
- Series: Chelsea 890
- Transmission Fit: Allison 3000 (MD) and 4000 (HD) Series
- Shift Type: Hydraulic PowerShift
- Mounting Type: 10-Bolt
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C Wet-Spline
- Intermittent Torque (Series): 501+ lb-ft
- Output Power (Series): 56+ HP / 51+ kW
- Shaft Power (Series): 64 HP at 500 RPM, 128 HP at 1000 RPM
Additional Information
The Chelsea 890 Series uses a one-piece main shaft, eliminating the input splines between the PTO and the output extension found on multi-piece designs. The clutch is positioned at the rear of the PTO housing, allowing the gear section to sit tight against the transmission for maximum clearance. An additional bracket at the rear of the transmission provides structural support. The 890 Series can be configured for transmissions equipped with or without a cooler or retarder. Typical market applications include aerial, fire and rescue, refuse, on-highway, and defense vehicles.Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
