The Chelsea 890ECFJW-B5XY or 890ECFJWB5XY is a hydraulic PowerShift PTO from the 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 flange to the rear of the transmission, creating clearance where standard side-mount PTOs fall short. The one-piece main shaft eliminates input splines between the PTO and the output extension, and the clutch sits at the rear of the housing so the gear section tucks tightly against the transmission. Output is an SAE C (XS) flange with Wet Spline lubrication to extend pump shaft life under demanding duty cycles. Continuous torque rating for the 890 Series reaches 670 ft-lb; shaft power is 64 HP at 500 RPM and 128 HP at 1,000 RPM. Common applications include aerial trucks, fire and rescue apparatus, 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 flange with Wet Spline lubrication for extended pump shaft life
One-piece main shaft eliminates input splines between PTO body and output extension
Clutch positioned at rear of housing to maximize pump clearance between transmission and frame rail
890 Series continuous torque rating: 670 ft-lb; 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
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C (XS) - Wet Spline
- Continuous Torque: 670 lb-ft (check application pages for actual torque ratings)
- Intermittent Torque: 501+ lb-ft
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
- Output Power: 56+ HP
Additional Information
