The Chelsea 892 Series Power Take-Off, part number 892PAFJW-B5ZS or 892PAFJWB5ZS, is a hydraulic hot shift PTO engineered specifically for the Allison 4700 Series transmission. The 892 Series relocates the pump mounting flange to the rear of the transmission, gaining clearance where side-mounted PTOs run out of room. It mounts on a 10-bolt pattern and uses an SAE C outlet flange and SAE C output shaft. A one-piece main shaft eliminates input splines between the PTO and the output extension, and wet spline technology protects the output shaft and pump shaft under continuous, high-demand use. Common applications include aerial trucks, fire and rescue apparatus, truck cranes, and refuse trucks. Call us to confirm proper fit for your specific transmission configuration.
Features
Designed for Allison 4700 Series transmissions
Hydraulic hot shift operation
10-bolt mounting pattern
SAE C outlet flange and SAE C output shaft
Wet spline output for extended PTO and pump shaft life
One-piece main shaft eliminates input splines between PTO body and output extension
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic (Hot Shift)
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C
- Lubricant/Output: Wet Spline
- Transmission Fit: Allison 4700 Series
- Series Intermittent Torque Rating: 501+ lb-ft
- Series Output Power: 56+ HP
- Input Gear Designator: FJ (Allison 3000 MD and 4000 HD Series)
Additional Information
The Chelsea 892 Series is suited for aerial, fire and rescue, snow and ice, refuse, and crane applications where pump clearance is limited and high continuous torque is required. The unit mounts like a standard side-mounted PTO but adds a bracket at the rear of the transmission for support, fitting neatly between the transmission and the frame rail. Parker Chelsea documents for this series include the 890/892/897/899 Series Owner's Manual and the 892 Series Parts List (HY25-2892-M1_US).Parts Manual: Chelsea 892 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
