The Chelsea 890LEFJW-D5XY or 890LEFJWD5XY is a hydraulic PowerShift (hot-shift) power take-off from the 890 Series, engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern and delivers an SAE C ("XS") output flange, with shaft power rated at 64 HP at 500 RPM and 128 HP at 1,000 RPM. The continuous-duty torque rating reaches 670 ft-lb, with intermittent torque beginning at 501 ft-lb. The one-piece main shaft eliminates the input splines between the PTO body and the output extension, placing the clutch at the rear to tuck the gear section tightly against the transmission for improved frame-rail clearance. Wet Spline lubrication (W designator) is standard on this unit. Call us to confirm proper fit for your application.
The Chelsea 890 Series fits between the transmission and the frame rail, locating the pump output to the rear of the transmission for adequate clearance. The single-unit design uses a one-piece shaft, eliminating the input splines found in PTO-plus-extension configurations. The clutch is positioned at the rear of the housing so the gear section tucks tightly against the transmission. Common applications for the 890 Series include aerial trucks, fire and rescue apparatus, refuse trucks, and truck cranes. The unit can be configured for transmissions equipped with or without a cooler or retarder.
Features
Hydraulic PowerShift (hot-shift) operation for Allison 3000 MD and 4000 HD Series transmissions
10-bolt mounting with an additional rear-of-transmission support bracket for rigidity
SAE C ("XS") output shaft and SAE C outlet flange
Continuous-duty torque rating up to 670 ft-lb; intermittent torque 501+ ft-lb
One-piece main shaft moves the pump mounting flange to the rear of the transmission for improved pump clearance
Wet Spline output (W designator) extends PTO and pump shaft life in demanding duty cycles
Tech Specs
- Transmission: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Shift Type: Hydraulic PowerShift (hot-shift)
- Mounting Type: 10-Bolt
- Output Shaft Type: SAE C ("XS") Output
- Outlet Flange Type: SAE C
- Input Gear Designator: FJ - Allison 3000 MD and 4000 HD Series
- Lubricant: W - Wet Spline
- Continuous Torque: 670 ft-lb (check application pages for actual torque ratings)
- Intermittent Torque: 501+ ft-lb
- Output Power: 56+ HP
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Additional Information
The Chelsea 890 Series fits between the transmission and the frame rail, locating the pump output to the rear of the transmission for adequate clearance. The single-unit design uses a one-piece shaft, eliminating the input splines found in PTO-plus-extension configurations. The clutch is positioned at the rear of the housing so the gear section tucks tightly against the transmission. Common applications for the 890 Series include aerial trucks, fire and rescue apparatus, refuse trucks, and truck cranes. The unit can be configured for transmissions equipped with or without a cooler or retarder.
