The Chelsea 890RBFJW-B5XV or 890RBFJWB5XV is a hydraulic hot-shift power take-off engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It uses a 10-bolt mounting configuration and positions the SAE C flange output to the rear of the transmission, moving the pump further back for improved clearance between the pump and the frame rail. A one-piece main shaft eliminates the input splines found in two-piece extension designs, and the clutch is located at the rear of the PTO housing so the gear section tucks tightly against the transmission. Wet-spline output technology reduces wear on both the PTO and pump shaft in continuous-duty service. Continuous-duty torque rating 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. Shift is hydraulic PowerShift. Call us to confirm proper fit for your specific Allison-equipped truck.
The Chelsea 890 Series is suited for aerial trucks, fire and rescue vehicles, snow and ice equipment, refuse trucks, and truck cranes where pump clearance is tight and continuous high-torque output is required. The 890 Series mounts like a standard side-mounted PTO but includes an additional support bracket at the rear of the transmission. It can be ordered for transmissions equipped with or without a cooler, a retarder, or both.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mount
Hydraulic PowerShift engagement for on-the-go PTO operation
SAE C (XS) output flange and shaft
One-piece main shaft design eliminates input splines between PTO and output extension
Wet-spline output extends PTO and pump shaft service life in demanding applications
Continuous-duty torque rating up to 670 ft-lbs; shaft power 64 HP at 500 RPM, 128 HP at 1,000 RPM
Tech Specs
- Transmission Application: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-bolt
- Shift Type: Hydraulic PowerShift
- Output Shaft Type: SAE C (XS)
- Outlet Flange Type: SAE C
- Continuous Torque Rating: 670 ft-lbs (check application pages for actual torque ratings)
- Intermittent Torque: 501+ ft-lbs
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 64 HP (48 kW) at 500 RPM; 128 HP (95 kW) at 1,000 RPM
- Lubricant/Spline Type: Wet Spline
Additional Information
The Chelsea 890 Series is suited for aerial trucks, fire and rescue vehicles, snow and ice equipment, refuse trucks, and truck cranes where pump clearance is tight and continuous high-torque output is required. The 890 Series mounts like a standard side-mounted PTO but includes an additional support bracket at the rear of the transmission. It can be ordered for transmissions equipped with or without a cooler, a retarder, or both.
