The Chelsea 897RDFJW-M5ZS or 897RDFJWM5ZS is a constant-engagement power take-off from the Chelsea 897 Series, designed specifically for Allison 3000 and 4000 Series transmissions. The 897 Series mounts via a 10-bolt pattern and positions the SAE C output flange at the rear of the transmission, improving pump clearance compared to a standard side-mounted PTO. A one-piece main shaft eliminates the input splines between the PTO and the output extension. The wet spline output extends pump shaft service life in demanding duty cycles. Applications for the 897 Series include aerial trucks, fire and rescue vehicles, refuse trucks, and truck cranes. Call us to confirm proper fit for your specific transmission configuration.
Features
Designed for Allison 3000 and 4000 Series transmissions
10-bolt mounting pattern
Constant-engagement (constant mesh) shift type
SAE C output shaft and outlet flange
Wet spline output for extended PTO and pump shaft life
One-piece main shaft eliminates input splines between PTO body and output extension
Tech Specs
- Series: Chelsea 897
- Transmission Fit: Allison 3000 and 4000 Series
- Mounting Type: 10-Bolt
- Shift Type: Constant Engagement
- Output Shaft Type: SAE C
- Outlet Flange Type: SAE C
- Lubricant Type: Wet Spline
- Intermittent Torque Rating: 501+ lb-ft
- Output Power: 56+ HP
Additional Information
Parts Manual: Chelsea 897 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
