The Chelsea 890LBFJW-B5XS or 890LBFJWB5XS is a 890 Series hydraulic hot-shift power take-off built for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern and uses a one-piece main shaft that positions the clutch at the rear of the housing, letting the gear section tuck tightly against the transmission and moving the pump output rearward for improved clearance between the pump and the frame rail. The SAE C output shaft uses Wet Spline Technology to extend pump shaft life in demanding duty cycles. Continuous torque rating for the 890 Series reaches 670 ft-lb, with intermittent torque rated at 501-plus lb-ft. Shaft power output is 64 HP at 500 RPM and 128 HP at 1,000 RPM. Common applications include aerial trucks, fire and rescue vehicles, pumper-cleaner units, truck cranes, and refuse trucks. A genuine Chelsea part sold by Pro Gear and Transmission. Call us to confirm proper fit for your specific Allison transmission configuration.
Features
10-bolt hydraulic hot-shift (PowerShift) engagement for Allison 3000 MD and 4000 HD Series transmissions
One-piece main shaft eliminates input splines between PTO and output extension for improved durability
SAE C output shaft with Wet Spline Technology extends pump shaft life in high-demand applications
Continuous torque rating up to 670 ft-lb; intermittent torque rated at 501-plus lb-ft
Shaft power output: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Pump output located at rear of transmission for improved clearance between pump and frame rail
Tech Specs
- Transmission Compatibility: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic Hot-Shift (PowerShift)
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C (XS) Extended Output
- Lubricant: Wet Spline
- Continuous Torque: 670 lb-ft (check application pages for actual torque ratings)
- Intermittent Torque: 501+ lb-ft
- 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
