The Chelsea 897REFJW-M5XS or 897REFJWM5XS is a constant-engagement PTO assembly engineered for Allison World Transmissions, using a 10-bolt mounting configuration. The SAE C output shaft (XS extended-shaft design) improves pump clearance, reducing interference issues in tight installations. Wet-spline lubrication (W designation) protects the PTO and pump shaft interface under sustained use. Continuous-duty torque is rated at 670 lb-ft (908 Nm); output power reaches 56+ HP at the flange. Shaft power output is 64 HP (48 kW) at 500 RPM and 128 HP (95 kW) at 1,000 RPM. A genuine Chelsea part sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
Fits Allison World Transmissions via FJ input gear designator
10-bolt mounting configuration
Constant engagement (constant mesh) output shift type
SAE C extended output shaft (XS) improves pump clearance
Wet-spline lubrication extends PTO and pump shaft service life
Continuous-duty torque rating: 670 lb-ft (908 Nm); 56+ HP output at the flange
Tech Specs
- Transmission Manufacturer: Allison World Transmissions
- Mounting Type: 10-Bolt
- Output Shift Type: Constant Engagement (Constant Mesh)
- Input Gear Designator: FJ - Allison World Transmissions
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C Extended Shaft (XS)
- Lubricant: Wet Spline
- Continuous Torque: 670 lb-ft, 908 Nm (verify actual rating on application pages)
- Intermittent Torque: 501+ lb-ft, 501+ Nm
- Output Power: 56+ HP, 51+ kW
- Shaft Power at 500 RPM: 64 HP, 48 kW
- Shaft Power at 1,000 RPM: 128 HP, 95 kW
Additional Information
Parts Manual: Chelsea 897 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
