The Chelsea 890 Series Power Take-Off, part number 890LCFJW-B5XY or 890LCFJWB5XY, is a hydraulic PowerShift PTO engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. The 890 Series mounts via a 10-bolt pattern and uses an SAE C (XS) output shaft with Wet Spline Technology to extend pump and PTO shaft life under demanding duty cycles. The single one-piece main shaft eliminates the input splines between the PTO and output extension, and the clutch is positioned at the rear of the housing so the gear section sits tightly against the transmission, moving the pump mounting flange to the rear of the transmission for improved pump clearance. Continuous-duty torque is rated at up to 670 lb-ft, with shaft power output of 64 HP at 500 RPM and 128 HP at 1000 RPM. Common applications include aerial trucks, fire and rescue trucks, refuse trucks, and truck cranes. Call us to confirm proper fit for your application.
Features
Hydraulic PowerShift (hot shift) operation for Allison 3000 MD and 4000 HD Series transmissions
10-bolt mounting with SAE C (XS) output shaft
Wet Spline output extends PTO and pump shaft life in demanding conditions
One-piece main shaft design eliminates input splines between PTO and output extension
Continuous-duty torque rating up to 670 lb-ft; intermittent torque 501+ lb-ft
Shaft power output: 64 HP at 500 RPM, 128 HP at 1000 RPM
Tech Specs
- Transmission Application: Allison 3000 MD Series and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- 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 (500 RPM), 128 HP (1000 RPM)
- Lubricant: Wet Spline
Additional Information
The Chelsea 890 Series is a single-unit PTO, not a PTO with a separate extension. Its clutch is located at the rear of the housing, allowing the gear section to tuck tightly against the transmission while positioning the pump output flange to the rear for adequate clearance between the pump and the frame rail. This design is a fit for aerial trucks, fire and rescue vehicles, snow and ice equipment, refuse trucks, and truck cranes where pump space is limited and high continuous torque is required. The 890 Series can be configured for transmissions equipped with or without a cooler, a retarder, or both. Part number 890LCFJW-B5XY is also referenced as SP890LCFJW-B5XY.Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
