The Chelsea 897JAFJW-M3CZ is a constant-engagement Power Take-Off from the 897 Series, engineered specifically for Allison 3000 and 4000 Series transmissions. The 897 Series moves the pump mounting flange to the rear of the transmission, locating the SAE C output behind the gear section so the housing tucks tightly against the transmission for improved pump clearance. A one-piece main shaft eliminates input splines between the PTO body and the output extension. The wet spline output extends pump shaft life in demanding duty cycles. Mounting is via a 10-bolt pattern with an additional rear bracket for support. The 897 Series is a single unit, not a PTO paired with a separate extension. Available from Pro Gear and Transmission.
Features
Constant engagement (constant mesh) shift type
10-bolt transmission mounting with additional rear support bracket
SAE C outlet flange and output shaft type
Wet spline output extends PTO and pump shaft life
Rear-of-transmission pump flange location for improved pump clearance
One-piece main shaft eliminates intermediate input splines
Suited for aerial, fire and rescue, refuse, and truck crane applications
Tech Specs
- Series: Chelsea 897
- Application: Allison 3000 and 4000 Series transmissions
- Shift Type: Constant Engagement (Constant Mesh)
- Mounting Type: 10-Bolt
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C
- Lubricant/Output: Wet Spline
- Intermittent Torque: 501+ lb-ft (series rating)
- Output Power: 56+ HP (series rating)
Additional Information
Parts Manual: Chelsea 897 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
