The Chelsea 892KDFJW-D5AB or 892KDFJWD5AB is a hydraulic hot-shift power take-off from the Chelsea 892 Series, designed specifically for Allison 4700 Series transmissions. The 892 Series positions the PTO and pump mounting flange at the rear of the transmission, improving clearance in tight frame-rail installations. Mounting is 10-bolt with an SAE C outlet flange and SAE C output shaft. The output uses Chelsea's Wet Spline Technology, which extends pump shaft life under continuous-duty demand. The series is rated for 501 ft-lb and above intermittent torque and 56-plus HP output, making it a fit for aerial trucks, fire and rescue, refuse, and crane applications. One-piece main shaft design eliminates input splines between PTO and output extension. Call us to confirm proper fit for your transmission configuration.
Features
Designed for Allison 4700 Series transmissions
10-bolt mounting with SAE C outlet flange and SAE C output shaft
Hydraulic hot-shift operation
Wet Spline output extends PTO and pump shaft life in demanding conditions
One-piece main shaft eliminates input splines between PTO and output extension
Suited for aerial, fire and rescue, refuse, and crane truck applications
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic Hot Shift
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C
- Output Power (Series): 56+ HP / 51+ kW
- Intermittent Torque (Series): 501+ lb-ft / 501+ Nm
- Lubricant/Output: Wet Spline
- Transmission Fit: Allison 4700 Series
- Input Gear Designator: FJ (Allison 3000 MD and 4000 HD Series)
- Dimensions (H x W x L): 13 in. x 11 in. x 38 in.
Additional Information
The Chelsea 892 Series is a single-unit PTO, not a PTO with a separate extension. The clutch is located at the rear of the unit, allowing the housing and gear section to sit tight against the transmission for improved frame-rail clearance. The 892 Series can be configured for transmissions with or without a cooler, retarder, or both. Typical markets include aerial, defense, on-highway, and other mobile equipment. Common applications include pumper cleaners, truck cranes, fire and rescue trucks, and refuse trucks.Parts Manual: Chelsea 892 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
