The Chelsea 897LFFJW-M5AF or 897LFFJWM5AF is a constant-engagement power take-off from the 897 Series, engineered specifically for Allison 3000 and 4000 Series transmissions. The 10-bolt mounting design positions the SAE C output flange at 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. A one-piece main shaft eliminates the input splines found on extension-style units. The wet spline output extends spline life under continuous-duty, high-demand conditions. Typical applications include aerial trucks, fire and rescue equipment, refuse trucks, and truck cranes. Call us to confirm proper fit for your application.
Features
Fits Allison 3000 and 4000 Series transmissions
10-bolt mounting with rear-positioned SAE C output flange
Constant engagement (constant mesh) shift type
Wet spline output extends PTO and pump shaft life in demanding service
One-piece main shaft eliminates input splines between PTO and output extension
Suited for aerial, fire and rescue, refuse, and crane truck applications
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Constant Engagement
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C
- Lubricant/Output: Wet Spline
- Transmission Fit: Allison 3000 and 4000 Series
- Series Intermittent Torque Rating: 501+ lb-ft
- Series 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.
