The Chelsea 890CDFJW-B3CZ or 890CDFJWB3CZ is a hydraulic hot-shift Power Take-Off from the Chelsea 890 Series, purpose-built for Allison 3000 (MD) and 4000 (HD) Series transmissions. It mounts via a 10-bolt pattern and features an SAE C ("XS") output shaft flange. The FJ input gear designator confirms fitment for the Allison 3000 and 4000 platforms. Continuous-duty torque reaches 670 lb-ft, with intermittent torque rated at 501+ lb-ft. Shaft power output is 64 HP at 500 RPM and 128 HP at 1,000 RPM. A one-piece main shaft eliminates the input splines between the PTO and output extension, and a wet-spline output extends pump shaft life in demanding applications. Call us to confirm proper fit for your application.
Typical applications for the 890 Series include aerial trucks, fire and rescue vehicles, pumper-cleaner trucks, truck cranes, and refuse trucks - anywhere high torque output and tight pump clearance are required.
The 890 Series accommodates Allison transmissions configured with or without a cooler, retarder, or both. Part number 890CDFJW-B3CZ is also referenced as SP890CDFJW-B3CZ. Contact Pro Gear and Transmission to verify fitment for your specific transmission configuration.
Features
Fits Allison 3000 (MD) and 4000 (HD) Series transmissions via FJ input gear
10-bolt mounting with SAE C ("XS") output shaft
Hydraulic PowerShift engagement
Continuous-duty torque rating up to 670 lb-ft; intermittent torque 501+ lb-ft
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
Tech Specs
- Transmission Fitment: 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
- Continuous Torque: 670 lb-ft (check application pages for actual torque ratings)
- 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
- Lubricant: Wet Spline
Additional Information
The Chelsea 890 Series is designed as a single-unit PTO, not a PTO-plus-extension arrangement. The one-piece main shaft eliminates the input splines between the PTO body and output extension, reducing potential failure points. The clutch is positioned at the rear of the PTO housing, allowing the gear section to tuck tightly against the transmission for improved frame-rail clearance. The pump output locates to the rear of the transmission, and an additional bracket at the rear of the transmission provides supplemental support alongside the standard side-mount bolt pattern.Typical applications for the 890 Series include aerial trucks, fire and rescue vehicles, pumper-cleaner trucks, truck cranes, and refuse trucks - anywhere high torque output and tight pump clearance are required.
The 890 Series accommodates Allison transmissions configured with or without a cooler, retarder, or both. Part number 890CDFJW-B3CZ is also referenced as SP890CDFJW-B3CZ. Contact Pro Gear and Transmission to verify fitment for your specific transmission configuration.
Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
