The Chelsea 890 Series Power Take-Off, part number 890NDFJW-B3XY or 890NDFJWB3XY, is a hydraulic hot-shift PTO engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern and positions the pump output at the rear of the transmission, giving the pump meaningful clearance between the transmission and frame rail. The output shaft is SAE C ("XS") with Wet Spline lubrication to extend spline life under demanding duty cycles. Continuous torque rating reaches 670 ft-lbs, with intermittent torque rated at 501+ ft-lbs. Shaft power delivery is 64 HP at 500 RPM and 128 HP at 1,000 RPM. Typical applications include aerial trucks, fire and rescue apparatus, truck cranes, and refuse vehicles. Call us to confirm proper fit for your application.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mount
Hydraulic PowerShift (hot shift) operation
SAE C ("XS") output shaft with Wet Spline lubrication for extended spline life
Continuous-duty torque rating up to 670 ft-lbs; intermittent torque 501+ ft-lbs
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Rear-positioned pump output locates the PTO between the transmission and frame rail for improved pump clearance
Tech Specs
- Transmission Application: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift (hot shift)
- Output Shaft Type: SAE C ("XS")
- Outlet Flange Type: SAE C
- Lubricant: Wet Spline
- Continuous Torque: 670 ft-lbs (check application pages for actual torque ratings)
- Intermittent Torque: 501+ ft-lbs
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 64 HP (500 RPM) / 128 HP (1,000 RPM)
Additional Information
The Chelsea 890 Series is a single-unit design. The main shaft is a one-piece shaft, eliminating the input splines between the PTO body and the output extension found on conventional PTO-plus-extension setups. The clutch sits at the rear of the PTO housing, allowing the gear section to tuck tightly against the transmission for improved frame-rail clearance. An additional support bracket at the rear of the transmission is included. This unit can be ordered for transmissions equipped with or without a cooler, retarder, or both. Common applications include aerial trucks, fire and rescue apparatus, truck cranes, pumper cleaners, and refuse vehicles.Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
