The Chelsea 890 Series Power Take-Off Assembly, part number 890LEFJW-B5AF or 890LEFJWB5AF, is a hydraulic hot-shift PTO engineered for Allison 3000 MD and 4000 HD Series transmissions. The 890 Series 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. A one-piece main shaft eliminates the input splines found in PTO-plus-extension designs, and a rear-mounted clutch lets the housing tuck tightly against the transmission. The SAE C output flange uses Wet Spline technology to reduce wear on the pump shaft during demanding duty cycles. Continuous torque reaches 670 lb-ft, with shaft output of 64 HP at 500 RPM and 128 HP at 1,000 RPM. Common applications include aerial, fire and rescue, refuse, and crane trucks. Call us to confirm proper fit for your specific Allison transmission configuration.
Features
Allison 3000 MD and 4000 HD Series transmission fitment (FJ input gear designator)
Hydraulic PowerShift (hot-shift) engagement
10-bolt mounting with rear-of-transmission pump output for improved frame-rail clearance
SAE C ("XS") output shaft with Wet Spline technology for extended pump shaft life
One-piece main shaft eliminates PTO-to-extension input splines
Continuous torque up to 670 lb-ft; shaft output 64 HP at 500 RPM, 128 HP at 1,000 RPM
Tech Specs
- Transmission Application: Allison 3000 MD and 4000 HD Series (FJ input gear designator)
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift (hot-shift)
- Output Shaft Type: SAE C ("XS") Wet Spline
- Outlet Flange Type: SAE C
- 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
- Lubricant: Wet Spline
Additional Information
