The Chelsea 890HBFJW-G5XY or 890HBFJWG5XY is a hydraulic PowerShift PTO from the Chelsea 890 Series, engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern and positions the pump output to the rear of the transmission, improving clearance between the pump and the frame rail. The output uses an SAE C ("XS") flange type with Wet Spline technology to extend shaft life under demanding duty cycles. The 890 Series delivers up to 670 ft-lb continuous-duty torque and shaft power of 64 HP at 500 RPM and 128 HP at 1,000 RPM. The main shaft is a one-piece design, eliminating the input splines found on extension-style units. Common applications include aerial trucks, fire and rescue apparatus, truck cranes, and refuse equipment. Call us to confirm proper fit for your transmission configuration.
The Chelsea 890 Series fits between the transmission and the frame rail, locating the pump output to the rear of the transmission for adequate clearance. It mounts like a standard side-mounted PTO but includes an additional bracket at the rear of the transmission for support. The unit can be ordered for transmissions equipped with or without a cooler, retarder, or both. Typical applications include aerial trucks, fire and rescue vehicles, snow and ice equipment, truck cranes, pumper cleaners, and refuse trucks.
Features
10-bolt mounting for Allison 3000 MD and 4000 HD Series transmissions
Hydraulic PowerShift (hot shift) engagement
SAE C ("XS") output flange with Wet Spline technology for extended shaft life
Continuous-duty torque rating up to 670 ft-lb; intermittent torque 501+ ft-lb
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
One-piece main shaft design moves clutch to rear of housing for improved pump clearance
Tech Specs
- Transmission Manufacturer: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Output Shaft Type: SAE C ("XS") Output
- Outlet Flange Type: SAE C
- Lubricant: Wet Spline
- Continuous Torque: 670 ft-lb (check application pages for actual torque ratings)
- Intermittent Torque: 501+ ft-lb
- 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
The Chelsea 890 Series fits between the transmission and the frame rail, locating the pump output to the rear of the transmission for adequate clearance. It mounts like a standard side-mounted PTO but includes an additional bracket at the rear of the transmission for support. The unit can be ordered for transmissions equipped with or without a cooler, retarder, or both. Typical applications include aerial trucks, fire and rescue vehicles, snow and ice equipment, truck cranes, pumper cleaners, and refuse trucks.
Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
