The Chelsea 897HBFJW-M5XY or 897HBFJWM5XY is a constant-mesh power take-off assembly designed specifically for Allison 3000 and 4000 Series transmissions. It uses a 10-bolt mounting configuration and positions the SAE C output flange to the rear of the transmission, tucking the gear section tight against the transmission housing to gain clearance between the pump and the frame rail. The main shaft is a single-piece design, eliminating input splines between the PTO body and the output extension. Wet Spline Technology is built in across the entire 897 Series, extending pump-shaft life under demanding duty cycles. Continuous-duty torque reaches 670 ft-lb; intermittent torque is rated at 501+ ft-lb. Shaft power output at 1,000 RPM is 128 HP. A genuine Chelsea part from Pro Gear and Transmission. Call us to confirm proper fit for your specific Allison application.
Features
Constant-mesh (constant engagement) shift type for Allison 3000 and 4000 Series transmissions
10-bolt mounting configuration
SAE C output flange and shaft, rear-mounted for improved pump-to-frame clearance
One-piece main shaft eliminates input splines between PTO body and output extension
Wet Spline Technology extends pump shaft life in high-demand applications
Continuous-duty torque rating: 670 ft-lb; shaft power at 1,000 RPM: 128 HP
Tech Specs
- Transmission Fitment: Allison 3000 and 4000 Series
- 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 (XS)
- Lubricant: W - Wet Spline
- Intermittent Torque: 501+ ft-lb, 501+ Nm
- Continuous Torque: 670 ft-lb, 908 Nm (verify actual rating on application pages)
- 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.
