The Chelsea 897CFFJW-M3CZ or 897CFFJWM3CZ is a constant-mesh power take-off from the Chelsea 897 Series, engineered specifically for Allison 3000 and 4000 Series transmissions. The 10-bolt mounting design relocates the pump output flange to the rear of the transmission, giving hydraulic pumps improved clearance between the transmission and the frame rail. The SAE C output flange pairs with wet spline technology to extend PTO and pump shaft life under demanding, continuous-duty cycles. The one-piece main shaft eliminates the input splines that typically connect a PTO to a separate output extension, making this a single integrated unit. Common applications include aerial trucks, fire and rescue vehicles, truck cranes, refuse trucks, and snow and ice equipment. Call us to confirm proper fit for your specific transmission configuration.
Features
Designed for Allison 3000 and 4000 Series transmissions
10-bolt mounting with rear-positioned pump output flange for improved clearance between transmission and frame rail
SAE C outlet flange and SAE C output shaft type
Constant-mesh (constant engagement) shift type
Wet spline output extends PTO and pump shaft life in demanding conditions
Single-unit design with one-piece main shaft, no PTO-to-extension input splines
Tech Specs
- Product Series: 897
- Mounting Type: 10-Bolt
- Shift Type: Constant Mesh (Constant Engagement)
- Transmission Fit: Allison 3000 and 4000 Series
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C
- Lubricant/Output Feature: Wet Spline
- Intermittent Torque Rating: 501+ lb-ft
- Output Power: 56+ HP (51+ kW)
- Dimensions (H x W x L): 13 in. x 11 in. x 31 in.
Additional Information
The 897 Series mounts like a standard side-mounted PTO but adds a support bracket at the rear of the transmission for added stability. The pump interface location at the rear of the transmission allows the housing and gear section to sit close to the transmission, improving overall clearance. This design is suited for applications where pump space is limited and high continuous-duty torque output is required, including aerial work trucks, fire and rescue pumpers, truck cranes, and refuse vehicles. The 897 Series can be configured for transmissions equipped with or without a cooler, a retarder, or both. Part number 897CFFJW-M3CZ is also referenced as SP897CFFJW-M3CZ. Contact Pro Gear and Transmission to confirm the correct configuration for your transmission and pump setup.Parts Manual: Chelsea 897 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
