The Chelsea 897CAFJW-M3CZ or 897CAFJWM3CZ is a constant-mesh power take-off assembly built for Allison 3000 and 4000 Series transmissions. It uses a 10-bolt mounting configuration and an SAE C output flange with a wet-spline output shaft, which extends pump spline life in demanding duty cycles. The 897 Series design places the pump mounting flange at the rear of the transmission, giving the pump and housing more clearance by tucking the gear section tightly against the transmission case. A one-piece main shaft eliminates the intermediate input splines found on extension-based designs. Continuous-duty torque is rated up to 670 lb-ft; intermittent torque is rated 501+ lb-ft. Shaft power output reaches 128 HP at 1,000 RPM. Typical applications include aerial trucks, fire and rescue vehicles, 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 (constant engagement) shift type for smooth, reliable PTO engagement
SAE C outlet flange and SAE C wet-spline output shaft
One-piece main shaft eliminates intermediate input splines between PTO and pump
Rear-mounted pump flange positions output behind the transmission for improved pump clearance
Continuous-duty torque up to 670 lb-ft; shaft power 64 HP at 500 RPM, 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 Extended Shaft)
- Lubricant / Spline Type: Wet Spline
- Intermittent Torque: 501+ lb-ft / 501+ Nm
- Continuous Torque: Up to 670 lb-ft / 908 Nm (verify on application pages for actual rating)
- 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
