The Chelsea 890 Series Power Take-Off, part number 890HDFJW-B5AF or 890HDFJWB5AF, is a hydraulic hot-shift PTO engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. The 890 Series mounts with a 10-bolt pattern and positions the SAE C pump output flange to the rear of the transmission, tucking the housing and gear section tightly against the transmission for improved pump clearance without the need for a separate extension. The main shaft is a single one-piece design, eliminating the input splines between the PTO body and the output. Wet Spline technology is standard on this unit, extending PTO and pump shaft service life under continuous-duty demands. Continuous-duty torque reaches 670 ft-lbs, with intermittent torque rated at 501 ft-lbs and above. Shaft power output is 64 HP at 500 RPM and 128 HP at 1,000 RPM. Common applications include aerial trucks, fire and rescue apparatus, refuse vehicles, and truck cranes. Available from Pro Gear and Transmission. Call us to confirm proper fit for your specific chassis and transmission configuration.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mounting
Hydraulic PowerShift (hot-shift) engagement
SAE C ("XS") output shaft and outlet flange
Continuous-duty torque rating up to 670 ft-lbs; intermittent torque 501+ ft-lbs
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Wet Spline output extends PTO and pump shaft life in demanding duty cycles
One-piece main shaft eliminates input splines between PTO body and output extension
Tech Specs
- Transmission Fitment: Allison 3000 MD and 4000 HD Series
- Product Series: Chelsea 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C ("XS") Output
- Lubricant/Spline Type: Wet Spline
- Continuous Torque: 670 lb-ft (verify actual rating on application pages)
- Intermittent Torque: 501+ lb-ft
- 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
