The Chelsea 897 Series Power Take-Off, part number 897RDFJW-M5XK or 897RDFJWM5XK, is a constant-engagement PTO engineered specifically for Allison 3000 and 4000 Series transmissions. It mounts via a 10-bolt pattern and positions the pump output flange at the rear of the transmission, tucking the housing tightly against the transmission to clear the frame rail without requiring a separate extension. The main shaft is a single one-piece design, eliminating the input splines between the PTO and the output extension. Output is an SAE C flange with wet-spline technology to reduce wear on the PTO and pump shaft in demanding duty cycles. Continuous-duty torque reaches 670 lb-ft; intermittent torque is rated at 501+ lb-ft. Shaft power output at 1,000 RPM is 128 HP. Call Pro Gear and Transmission to confirm proper fit for your specific Allison application.
Features
Fits Allison 3000 and 4000 Series transmissions via 10-bolt mounting
Constant-engagement (constant mesh) shift type for continuous-duty operation
Single one-piece main shaft eliminates input splines between PTO and output extension
SAE C outlet flange with wet-spline output to extend PTO and pump shaft service life
Rear-positioned pump flange moves the pump clear of the frame rail without a separate extension unit
Continuous-duty torque rating up to 670 lb-ft; 128 HP shaft output at 1,000 RPM
Tech Specs
- Transmission Fitment: Allison 3000 and 4000 Series
- 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 (XS)
- Lubricant/Output: Wet Spline
- Intermittent Torque: 501+ lb-ft (501+ Nm)
- Continuous Torque: 670 lb-ft (908 Nm) - check application pages for actual torque ratings
- Output Power: 56+ HP (51+ kW)
- Shaft Power at 500 RPM: 64 HP (48 kW)
- Shaft Power at 1,000 RPM: 128 HP (95 kW)
Additional Information
Parts Manual: Chelsea 897 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
