The Chelsea 890XBFJW-B5AF 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 SAE C output flange to the rear of the transmission, improving pump clearance in tight frame-rail installations. A one-piece main shaft eliminates input splines between the PTO and the output extension, while Wet Spline technology on the output extends pump shaft life under demanding duty cycles. The series carries an intermittent torque rating above 501 lb-ft and delivers up to 128 HP at 1,000 RPM. Common applications include aerial trucks, fire and rescue trucks, refuse trucks, and truck cranes. Available from Pro Gear and Transmission.
Features
Fits Allison 3000 MD and 4000 HD series transmissions
Hydraulic PowerShift (hot shift) engagement
10-bolt mounting flange
SAE C outlet flange and output shaft
Wet Spline output extends PTO and pump shaft life
One-piece main shaft design eliminates input splines between PTO body and output
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 (XS)
- Lubricant/Output: Wet Spline
- Intermittent Torque (series): 501+ lb-ft / 501+ Nm
- Output Power (series): 56+ HP / 51+ kW
- Shaft Power (series): 64 HP at 500 RPM; 128 HP 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.
