The Chelsea 897HDFJW-M5AF is a constant-mesh power take-off from the Chelsea 897 Series, engineered specifically for Allison 3000 and 4000 Series transmissions. The 897 Series positions the PTO/pump mounting flange at the rear of the transmission, tucking the housing tightly against the transmission and freeing up clearance between the pump and the frame rail. The output uses wet spline technology to extend PTO and pump shaft service life under demanding duty cycles. Mounting is 10-bolt with an SAE C outlet flange and SAE C output shaft type. The main shaft is a one-piece design, eliminating the input splines typically found between a PTO body and an output extension. Common applications for this series include aerial trucks, fire and rescue trucks, refuse trucks, and truck cranes. Call us to confirm proper fit for your specific transmission configuration.
Features
Constant-mesh (constant engagement) shift type for continuous-duty operation
10-bolt mounting with SAE C outlet flange and SAE C output shaft
Wet spline output extends PTO and pump shaft life in demanding applications
Pump flange positioned at the rear of the transmission for improved pump clearance
One-piece main shaft eliminates input splines between PTO body and output extension
Fits Allison 3000 and 4000 Series transmissions; suitable for aerial, fire and rescue, refuse, and crane applications
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: W - Wet Spline
- Intermittent Torque: 501+ lb-ft
- Output Power: 56+ HP (51+ kW)
- Transmission Application: Allison 3000 and 4000 Series
- Product Series: 897
Additional Information
Parts Manual: Chelsea 897 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
