The Chelsea 897HDFJW-M5AZ or 897HDFJWM5AZ is a constant-mesh Power Take-Off Assembly from the Chelsea 897 Series, engineered specifically for Allison 3000 and 4000 Series transmissions. It mounts via a 10-bolt pattern and positions the SAE C output flange at the rear of the transmission, tucking the housing tightly against the transmission to improve pump clearance between the unit and the frame rail. The one-piece main shaft eliminates input splines between the PTO body and the output extension. Wet Spline output technology protects the PTO and pump shaft in demanding duty cycles. Continuous-duty torque reaches 670 ft-lb (908 Nm); intermittent torque is rated at 501+ ft-lb. Shaft power output at 1,000 RPM is 128 HP (95 kW). Common applications include aerial trucks, fire and rescue trucks, refuse trucks, and truck cranes. Call us to confirm proper fit for your specific transmission configuration.
Features
Fits Allison 3000 and 4000 Series transmissions via 10-bolt mounting
Constant-mesh engagement (Constant Engagement shift type)
SAE C output shaft and outlet flange with rear-of-transmission positioning for improved pump clearance
One-piece main shaft eliminates input splines between PTO body and output extension
Wet Spline output extends PTO and pump shaft life in demanding applications
Continuous-duty torque rating of 670 ft-lb (908 Nm); shaft power 128 HP at 1,000 RPM
Tech Specs
- Transmission Manufacturer: Allison 3000 / 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: Wet Spline
- Intermittent Torque: 501+ lb-ft (501+ Nm)
- Continuous Torque: 670 lb-ft (908 Nm) - Check Application Pages for Actual Torque Ratings
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 500 RPM: 64 HP (48 kW) / 1,000 RPM: 128 HP (95 kW)
Additional Information
