Description
The Chelsea 890UBFJW-B5AZ or 890UBFJWB5AZ is a 890 Series Power Take-Off Assembly engineered for Allison 3000 MD and 4000 HD series transmissions. It mounts via a 10-bolt pattern and engages through a Hydraulic PowerShift, making it well suited for vocational trucks running hydraulic-driven accessories. The SAE C output flange and extended SAE “C” (XS) output shaft provide added pump clearance where tight engine bays create fitment challenges. Continuous-duty torque is rated at 670 lb-ft, with shaft power output reaching 128 HP at 1,000 RPM. The wet-spline lubrication design helps protect the PTO-to-pump shaft interface over high-cycle service. Call us to confirm proper fit for your specific vehicle and hydraulic system.
Features
Fits Allison 3000 MD and 4000 HD series transmissions via 10-bolt mounting
Hydraulic PowerShift engagement
SAE C outlet flange with extended SAE “C” (XS) output shaft for improved pump clearance
Continuous-duty torque rating of 670 lb-ft; intermittent torque rated at 501+ lb-ft
Shaft power output: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Wet-spline lubrication to extend PTO and pump shaft service life
Tech Specs
- Transmission Manufacturer: Allison
- Product Series: 890
- Input Gear Designator: FJ – Allison 3000 MD and 4000 HD Series
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C (XS) Extended Output
- Lubricant: Wet Spline
- Continuous Torque: 670 lb-ft (908 Nm) – check application pages for actual torque ratings
- Intermittent Torque: 501+ lb-ft (501+ Nm)
- Output Power: 56+ HP (51+ kW)
- Shaft Power at 500 RPM: 64 HP (48 kW)
- Shaft Power at 1,000 RPM: 128 HP (95 kW)
