The Chelsea 897XCFJW-M5XY or 897XCFJWM5XY is a 897 Series constant-engagement power take-off designed specifically for Allison 3000 and 4000 Series transmissions. The 10-bolt mounting configuration places the SAE C output flange at the rear of the transmission, moving the pump interface back to create clearance between the PTO and the frame rail without relying on an extension. The main shaft is a one-piece design, which eliminates the input splines between the PTO body and the output extension found on earlier configurations. A wet spline output extends service life on the pump shaft under continuous-duty conditions. Series intermittent torque rating exceeds 501 lb-ft. Call us to confirm proper fit for your specific Allison-equipped application.
Features
Designed for Allison 3000 and 4000 Series transmissions
10-bolt mounting with SAE C outlet flange and SAE C output shaft
Constant-engagement (constant mesh) shift type
Rear-mounted pump flange improves clearance between PTO and frame rail
One-piece main shaft eliminates input splines between PTO body and output extension
Wet spline output extends PTO and pump shaft service life
Tech Specs
- Series: Chelsea 897
- Part Number: 897XCFJW-M5XY or 897XCFJWM5XY
- Transmission Fit: Allison 3000 Series, Allison 4000 Series
- Mounting Type: 10-Bolt
- Shift Type: Constant Engagement
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C
- Lubrication: Wet Spline
- Series Intermittent Torque Rating: 501+ lb-ft / 501+ Nm
- Series Output Power: 56+ HP / 51+ kW
Additional Information
The 897 Series is a single-unit PTO, not a PTO paired with a separate output extension. The housing and gear section tuck tightly against the transmission, while the extended shaft locates the pump interface rearward for adequate spacing alongside the frame rail. This configuration suits aerial trucks, fire and rescue trucks, refuse trucks, and truck crane applications where pump clearance and continuous-duty torque capacity are priorities. An additional support bracket at the rear of the transmission is included as part of the mount design.Parts Manual: Chelsea 897 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
