The Chelsea 892UAFJW-D5DA is a hydraulic hot-shift Power Take-Off from the 892 Series, engineered specifically for Allison 4700 Series transmissions. The 892 Series locates the pump mounting flange at the rear of the transmission, creating clearance where standard side-mount PTOs fall short. A one-piece main shaft eliminates the input splines between the PTO body and the output extension, and the clutch is positioned at the rear of the housing so the gear section tucks tightly against the transmission. The output uses Chelsea Wet Spline technology to extend service life on the PTO and pump shaft in demanding duty cycles. Mounting is 10-bolt with an SAE C output flange and shaft. The 892 Series carries an intermittent torque rating of 501-plus lb-ft and output power of 56-plus HP at the series level. Available from Pro Gear and Transmission.
Features
Designed for Allison 4700 Series transmissions
Hydraulic hot-shift engagement
10-bolt mounting with additional rear-of-transmission support bracket
SAE C output flange and shaft type
Wet Spline output extends PTO and pump shaft service life
One-piece main shaft, no input splines between PTO body and output extension
Tech Specs
- Series: Chelsea 892
- Transmission Fit: Allison 4700 Series
- Shift Type: Hydraulic Hot Shift
- Mounting Type: 10-Bolt
- Output Flange Type: SAE C
- Output Shaft Type: SAE C
- Lubricant/Output: Wet Spline
- Intermittent Torque (Series): 501+ lb-ft / 501+ Nm
- Output Power (Series): 56+ HP / 51+ kW
- Input Gear Designator: FJ (Allison 3000 MD and 4000 HD Series)
Additional Information
The 892 Series is a single-unit PTO, not a PTO paired with a separate extension. The pump output is positioned to the rear of the transmission to maximize clearance between the PTO and the frame rail. The unit mounts like a standard side-mount PTO but includes an additional support bracket at the rear of the transmission. Typical applications for this series include aerial trucks, fire and rescue trucks, pumper cleaners, truck cranes, refuse trucks, and snow and ice equipment. The 892 Series can be configured for transmissions equipped with or without a cooler, retarder, or both.Parts Manual: Chelsea 892 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
