The Chelsea 897CDFJW-M3XV is a constant-mesh power take-off from the 897 Series, engineered specifically for Allison 3000 and 4000 Series transmissions. The design shifts the PTO/pump mounting flange to the rear of the transmission, giving the pump more clearance while allowing the housing to sit tight against the transmission side. Mounting is 10-bolt with an SAE C outlet flange and SAE C output shaft. The wet-spline output extends PTO and pump shaft life under demanding duty cycles. The 897 Series uses a one-piece main shaft, eliminating the input splines that would otherwise exist between a PTO body and a separate output extension. Typical applications include aerial trucks, fire and rescue apparatus, refuse trucks, and truck cranes. Call us to confirm proper fit for your specific transmission configuration.
Features
Constant-mesh (constant engagement) shift type for Allison 3000/4000 Series transmissions
10-bolt mounting with SAE C outlet flange and SAE C output shaft
Wet-spline output technology extends PTO and pump shaft service life
Pump mounting flange positioned at rear of transmission for improved pump clearance
One-piece main shaft design eliminates intermediate input splines
Suited for aerial, fire and rescue, refuse, and crane truck applications
Tech Specs
- Series: Chelsea 897
- Part Number: 897CDFJW-M3XV or 897CDFJWM3XV
- Shift Type: Constant Mesh / Constant Engagement
- Mounting Type: 10-Bolt
- Input Gear Designator: FJ - Allison World Transmissions
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C
- Lubricant/Output: W - Wet Spline
- Intermittent Torque Rating: 501+ lb-ft / 501+ Nm (series rating)
- Output Power: 56+ HP / 51+ kW (series rating)
- Transmission Fitment: Allison 3000 Series, Allison 4000 Series
- Dimensions (H x W x L): 13 in. x 11 in. x 31 in.
Additional Information
The Chelsea 897 Series is a single-unit PTO, not a PTO paired with a bolt-on extension. By integrating the pump interface at the rear of the transmission rather than the side, the 897 fits between the transmission and the frame rail without requiring additional clearance modifications in most installations. The series accommodates transmissions equipped with or without a cooler, a retarder, or both. The wet-spline output is particularly well suited to high-cycle hydraulic applications where repeated engagement accelerates conventional dry-spline wear. Also referenced as SP897CDFJW-M3XV in some supplier catalogs. Contact Pro Gear and Transmission to verify the correct 897 Series configuration for your transmission build.Parts Manual: Chelsea 897 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
