The Chelsea 897CCFJW-M3ZS or 897CCFJWM3ZS is a constant-engagement Power Take-Off Assembly from the Chelsea 897 Series, engineered specifically for Allison 3000 and 4000 Series transmissions. It uses a 10-bolt mounting configuration and delivers an SAE C flange output with a wet-spline output shaft for extended pump spline life under demanding duty cycles. Continuous-duty torque reaches 670 lb-ft; intermittent torque is rated above 501 lb-ft. Shaft power output is 64 HP at 500 RPM and 128 HP at 1,000 RPM. The one-piece main shaft eliminates input splines between the PTO body and the output extension, positioning the pump interface at the rear of the transmission to maximize clearance against the frame rail. Typical applications include aerial trucks, fire and rescue, refuse trucks, and truck cranes. Call Pro Gear and Transmission to confirm proper fit for your specific Allison transmission configuration.
Features
10-bolt mounting for Allison 3000 and 4000 Series transmissions
Constant-engagement (constant mesh) shift type
SAE C flange outlet with wet-spline output shaft for extended pump and PTO shaft life
Continuous-duty torque rated up to 670 lb-ft; intermittent torque rated above 501 lb-ft
One-piece main shaft positions pump interface at rear of transmission for improved frame-rail clearance
Shaft power output: 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 Engagement (Constant Mesh)
- 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 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.
