The Chelsea 897PAFJW-M5XS or 897PAFJWM5XS is a constant-mesh power take-off engineered for Allison 3000 and 4000 Series transmissions. Its 10-bolt mounting and one-piece main shaft position the SAE C pump interface at the rear of the transmission, tucking the housing tightly against the case to open up clearance between the pump and the frame rail. The wet-spline output extends shaft life in demanding duty cycles. Continuous torque rating reaches 670 ft-lb (verify actual rating on the Chelsea application pages for your specific setup). Shaft power at 1,000 RPM is 128 HP. A bracket at the rear of the transmission provides added support without requiring a separate extension unit. Common fits include aerial, fire and rescue, refuse, and crane truck applications. Call us to confirm proper fit for your transmission configuration.
Features
Fits Allison 3000 and 4000 Series transmissions via 10-bolt mounting
Constant-mesh (constant engagement) shift type for smooth, reliable engagement
SAE C outlet flange and SAE C extended output shaft for improved pump clearance
Wet-spline output technology extends PTO and pump shaft life in high-demand service
Continuous torque rating up to 670 ft-lb; intermittent torque 501+ ft-lb
Shaft power output: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Tech Specs
- Transmission Manufacturer: Allison 3000 / 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 Extended ("XS")
- Lubricant: W - Wet Spline
- Intermittent Torque: 501+ lb-ft / 501+ Nm
- Continuous Torque: 670 lb-ft / 908 Nm (verify actual rating on Chelsea application pages)
- 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.
