The Chelsea 899UAFJW-M5AF or 899UAFJWM5AF is a constant mesh power take-off from the Chelsea 899 Series, designed specifically for Allison 4700 Series transmissions. The 10-bolt mounting configuration positions the SAE C pump flange at the rear of the transmission, improving clearance between the PTO and the frame rail. The output shaft is an SAE C 1-1/4"-14T pump spline with wet spline lubrication to extend shaft and pump life in demanding service. The 899 Series is built around a one-piece main shaft, eliminating the input splines between the PTO body and the output extension. Common applications for this series include aerial trucks, fire and rescue trucks, refuse trucks, and truck cranes. Call us to confirm proper fit for your specific transmission configuration.
Features
Designed for Allison 4700 Series transmissions
10-bolt mounting configuration
Constant mesh (non-shiftable) operation
SAE C 1-1/4"-14T pump spline output shaft
Wet spline output for extended PTO and pump shaft life
Rear-positioned pump flange improves clearance with frame rail
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Constant Mesh
- Output Shaft Type: SAE C 1-1/4"-14T Pump Spline
- Outlet Flange Type: SAE C
- Output (series): 56+ HP, 51+ kW
- Intermittent Torque (series): 501+ lb-ft
- Transmission Application: Allison 4700 Series
- Lubricant Style: Wet Spline
Additional Information
Parts Manual: Chelsea 899 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
