The Chelsea 897 Series Power Take-Off Assembly, part number 897LDFJW-M5XK or 897LDFJWM5XK, is a constant-engagement PTO designed specifically for Allison 3000 and 4000 Series transmissions. Its 10-bolt mounting and one-piece main shaft move the pump interface to the rear of the transmission, tucking the housing and gear section tightly against the transmission for improved clearance between the PTO and the frame rail. Continuous-duty torque capability reaches 670 ft-lb (908 Nm), with intermittent ratings starting above 501 ft-lb. Output is SAE C flange with a wet-spline shaft that extends pump spline life under demanding duty cycles. Shaft power runs from 64 HP at 500 RPM to 128 HP at 1,000 RPM. Common applications include aerial trucks, fire and rescue units, truck cranes, and refuse vehicles. Call us to confirm proper fit for your specific Allison transmission configuration.
Features
Allison 3000 and 4000 Series transmission fitment via FJ input gear designator
10-bolt mounting with rear-of-transmission pump placement for improved frame-rail clearance
One-piece main shaft eliminates input splines between PTO and output extension
Constant-engagement (constant mesh) shift type, code M
SAE C output flange and wet-spline output shaft extend pump spline life
Continuous-duty torque rating up to 670 ft-lb (908 Nm); intermittent torque 501+ ft-lb
Tech Specs
- Transmission Fitment: Allison 3000 and 4000 Series
- Input Gear Designator: FJ - Allison World Transmissions
- Mounting Type: 10-Bolt
- Output Shift Type: Constant Mesh (Constant Engagement)
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C (XS Extended Shaft)
- Lubricant / Spline Type: Wet Spline
- Continuous Torque: 670 ft-lb / 908 Nm (verify actual rating on application pages)
- Intermittent Torque: 501+ ft-lb / 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
