The Chelsea 890 Series Power Take-Off, part number 890HEFJW-B5XY or 890HEFJWB5XY, is a hydraulic hot-shift PTO engineered for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern and uses a SAE C ("XS") output flange and shaft. The 890 Series positions the pump mounting flange at the rear of the transmission, giving better clearance between the PTO and the frame rail. Its one-piece main shaft eliminates input splines between the PTO body and the output extension. Wet-spline lubrication on the output extends pump shaft life under demanding duty cycles. Continuous-duty torque reaches 670 ft-lbs, with intermittent torque rated at 501+ lb-ft. Shaft power output is 64 HP at 500 RPM and 128 HP at 1,000 RPM. Typical applications include aerial trucks, fire and rescue, refuse trucks, and truck cranes. A genuine Chelsea part from Pro Gear and Transmission. Call us to confirm proper fit for your transmission configuration.
Features
Hydraulic PowerShift (hot-shift) operation for Allison 3000 MD and 4000 HD Series transmissions
10-bolt mounting with rear-of-transmission pump flange location for improved pump clearance
SAE C ("XS") output shaft and outlet flange
Wet-spline output lubrication to extend PTO and pump shaft life
Continuous-duty torque rating up to 670 ft-lbs; intermittent torque 501+ lb-ft
Shaft power output: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Tech Specs
- Transmission Manufacturer: Allison
- Application: Allison 3000 MD & 4000 HD Series (Input Gear Designator: FJ)
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift (Hydraulic)
- Output Shaft Type: SAE C ("XS") Output
- 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 at 500 RPM, 128 HP at 1,000 RPM
- Lubricant/Output: Wet Spline
Additional Information
Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
