The Chelsea 890 Series Power Take-Off, part number 890CBFJW-B3XV or 890CBFJWB3XV, is a hydraulic PowerShift PTO engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern and features an SAE C (XS) output shaft with an SAE C outlet flange. The one-piece main shaft eliminates input splines between the PTO and output extension, and the clutch is positioned at the rear of the housing so the gear section tucks tightly against the transmission for clearance. Wet Spline output technology reduces wear on the pump shaft under demanding duty cycles. Continuous torque rating reaches 670 ft-lb, with shaft power of 64 HP at 500 RPM and 128 HP at 1,000 RPM. Common applications include aerial trucks, fire and rescue, refuse trucks, and truck cranes. Call us to confirm proper fit for your specific 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 with SAE C outlet flange
One-piece main shaft eliminates input splines between PTO body and output extension
Wet Spline output extends pump shaft life in high-demand applications
Continuous torque rating up to 670 ft-lb; shaft power 64 HP at 500 RPM and 128 HP at 1,000 RPM
Tech Specs
- Transmission: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Input Gear Designator: FJ - Allison 3000 MD and 4000 HD Series
- Output Shaft Type: SAE C (XS)
- Outlet Flange Type: SAE C
- Lubricant: Wet Spline (W)
- 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 at 500 RPM, 128 HP at 1,000 RPM
Additional Information
The Chelsea 890 Series is designed as a single unit, not a PTO with a bolt-on extension. The clutch is located at the rear of the PTO housing, allowing the gear section to tuck close to the transmission and move the pump mounting flange rearward for improved clearance between the pump and the truck frame rail. An additional support bracket at the rear of the transmission is included. The unit can be configured for transmissions with or without a cooler, retarder, or both. Typical applications include aerial trucks, fire and rescue trucks, refuse trucks, pumper cleaners, and truck cranes. Part number 890CBFJW-B3XV is also referenced as SP890CBFJW-B3XV.Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
