The Chelsea 897CAFJW-M3XY or 897CAFJWM3XY is a constant-mesh power take-off from the Chelsea 897 Series, engineered specifically for Allison 3000 and 4000 Series transmissions. The 897 Series mounts via a 10-bolt configuration and positions the pump output flange at the rear of the transmission, freeing up clearance between the PTO housing and the frame rail. The SAE C outlet flange and SAE C output shaft are standard across this series. The wet spline output extends PTO and pump shaft life under demanding duty cycles. Intermittent torque rating for the 897 Series is 501+ lb-ft, with output power at 56+ HP. Applications include aerial trucks, fire and rescue apparatus, truck cranes, refuse trucks, and snow and ice equipment. Call us to confirm proper fit for your specific transmission and upfit configuration.
Features
Chelsea 897 Series constant-mesh (constant engagement) PTO
Designed to fit Allison 3000 and 4000 Series transmissions (FJ input gear designator)
10-bolt mounting configuration
SAE C outlet flange and SAE C output shaft
Wet spline output to extend PTO and pump shaft life
Intermittent torque rating: 501+ lb-ft; output power: 56+ HP
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Constant Mesh / Constant Engagement
- Input Gear Designator: FJ (Allison World Transmissions)
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C
- Lubricant/Output Option: W - Wet Spline
- Intermittent Torque Rating: 501+ lb-ft (501+ Nm)
- Output Power: 56+ HP (51+ kW)
- Transmission Application: Allison 3000 Series, Allison 4000 Series
- Dimensions (H x W x L): 13 in. x 11 in. x 31 in.
Additional Information
The 897 Series is a single-unit PTO, not a PTO with a separate extension. The main shaft is a one-piece design that eliminates input splines between the PTO body and the output extension, reducing potential failure points. The pump interface locates at the rear of the transmission so the housing and gear section tuck tightly against the transmission for improved side clearance. This design is particularly well suited to aerial trucks, fire and rescue apparatus, truck cranes, refuse trucks, and snow and ice spreader/plow upfits where pump space is limited and high torque is required. The 897 Series can be configured for transmissions equipped with or without a cooler, a retarder, or both. Sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.Parts Manual: Chelsea 897 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
