The Chelsea 897RGFJW-M5AZ is a constant-mesh Power Take-Off from the Chelsea 897 Series, engineered for Allison 3000 and 4000 Series transmissions. The 897 Series mounts like a standard side-mounted PTO but relocates the pump interface to the rear of the transmission, placing the housing and gear section tight against the transmission for improved frame-rail clearance. A one-piece main shaft eliminates input splines between the PTO and output extension. The SAE C output flange uses Wet Spline Technology to extend PTO and pump shaft life under demanding, continuous-duty conditions. Common applications include aerial trucks, fire and rescue trucks, refuse trucks, and truck cranes. Available from Pro Gear and Transmission.
Features
Fits Allison 3000 and 4000 Series transmissions
10-bolt mounting configuration
SAE C output flange and output shaft type
Constant engagement (constant mesh) shift type
Wet Spline output extends PTO and pump shaft life
Pump interface located at rear of transmission for improved frame-rail clearance
Tech Specs
- Series: Chelsea 897
- Mounting Type: 10-Bolt
- Shift Type: Constant Mesh (Constant Engagement)
- Input Gear Designator: FJ - Allison World Transmissions
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C
- Lubricant/Output: W - Wet Spline
- Intermittent Torque Rating: 501+ lb-ft
- Output Power: 56+ HP (51+ kW)
- Application: Allison 3000 and 4000 Series transmissions
Additional Information
The Chelsea 897 Series is a single-unit PTO, not a PTO with a separate extension. Its one-piece main shaft eliminates the spline interface that exists between a standard PTO body and an output extension, reducing a common wear point. The series accommodates transmissions equipped with or without a cooler, a retarder, or both. Typical service applications include aerial trucks, fire and rescue trucks, snow and ice equipment, refuse trucks, pumper cleaners, and truck cranes.Parts Manual: Chelsea 897 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
