The Chelsea 890HCFJW-B5XV or 890HCFJWB5XV is a hydraulic PowerShift power take-off 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 SAE C output flange toward the rear of the transmission, tucking the housing tight to the frame rail for improved pump clearance. Unlike a PTO-plus-extension arrangement, the 890 Series uses a single one-piece main shaft that eliminates input splines between the PTO and the output extension. The wet-spline output lubricates the pump shaft interface for durability under continuous demand. Continuous-duty torque is rated at 670 ft-lbs, with shaft power of 64 HP at 500 RPM and 128 HP at 1,000 RPM. Common applications include aerial trucks, fire and rescue vehicles, refuse trucks, and truck cranes. Call us to confirm proper fit for your application.
The Chelsea 890 Series is a single-unit design - not a PTO combined with a bolt-on extension. The one-piece main shaft eliminates the splined interface that conventional PTO-plus-extension configurations require. The clutch assembly is positioned at the rear of the unit, allowing the housing and gear section to sit close to the transmission. An additional support bracket mounts at the rear of the transmission alongside the standard side-mount attachment points. The 890 Series accommodates Allison transmissions configured with or without a cooler, retarder, or both. Typical applications include aerial trucks, fire and rescue apparatus, pumper cleaners, refuse trucks, and truck cranes.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mounting
Hydraulic PowerShift (hot shift) engagement
SAE C (XS) output flange with wet-spline lubrication for extended pump shaft life
Continuous-duty torque rating of 670 ft-lbs; intermittent torque 501+ ft-lbs
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
One-piece main shaft design moves the clutch to the rear for a tighter, clearance-friendly profile
Tech Specs
- Transmission Manufacturer: 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
- Lubricant: Wet Spline
- Continuous Torque: 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 (500 RPM), 128 HP (1,000 RPM) / 48 kW (500 RPM), 95 kW (1,000 RPM)
- Product Series: 890
Additional Information
The Chelsea 890 Series is a single-unit design - not a PTO combined with a bolt-on extension. The one-piece main shaft eliminates the splined interface that conventional PTO-plus-extension configurations require. The clutch assembly is positioned at the rear of the unit, allowing the housing and gear section to sit close to the transmission. An additional support bracket mounts at the rear of the transmission alongside the standard side-mount attachment points. The 890 Series accommodates Allison transmissions configured with or without a cooler, retarder, or both. Typical applications include aerial trucks, fire and rescue apparatus, pumper cleaners, refuse trucks, and truck cranes.
