The Chelsea 897ECFJW-M5XY is a constant-engagement power take-off from the Chelsea 897 Series, designed specifically for Allison 3000 and 4000 Series transmissions. Also referenced as 897ECFJWM5XY, this unit mounts via a 10-bolt pattern and uses an SAE C output shaft and outlet flange. The 897 Series moves the pump mounting flange to the rear of the transmission, improving pump clearance while keeping the housing tight to the transmission case. A one-piece main shaft eliminates the input splines found in PTO-plus-extension setups. Wet Spline output technology protects the PTO and pump shaft under continuous-duty, high-demand conditions. 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
Chelsea 897 Series Power Take-Off, part number 897ECFJW-M5XY or 897ECFJWM5XY
Designed for Allison 3000 and 4000 Series transmissions
10-bolt mounting with SAE C output shaft and outlet flange
Constant-engagement (constant mesh) shift type
Wet Spline output extends PTO and pump shaft service life
Rear-located pump interface improves clearance between PTO and frame rail
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Constant Engagement
- Output Shaft Type: SAE C
- Outlet Flange Type: SAE C
- Lubrication: Wet Spline
- Transmission Fit: Allison 3000 and 4000 Series
- Series: Chelsea 897
Additional Information
Parts Manual: Chelsea 897 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
