The Chelsea 897 Series PTO Assembly, part number 897LDFJW-M5XS or 897LDFJWM5XS, is a constant-engagement (constant mesh) power take-off engineered for Allison 3000 and 4000 Series transmissions. It mounts via a 10-bolt pattern and uses a one-piece main shaft that positions the SAE C output flange at the rear of the transmission, tucking the gear section tight to the housing for improved pump clearance without a separate extension unit. The wet-spline output lubrication extends pump shaft service life in demanding duty cycles. Continuous torque rating reaches 670 lb-ft (908 Nm); intermittent torque is rated at 501+ lb-ft. Shaft power output is 64 HP at 500 RPM and 128 HP at 1,000 RPM. Typical applications include aerial trucks, fire and rescue, refuse trucks, and truck cranes. A genuine Chelsea part, sold by Pro Gear and Transmission. Call us to confirm proper fit for your specific Allison configuration.
Features
Designed for Allison 3000 and 4000 Series transmissions, 10-bolt mounting
Constant-engagement (constant mesh) shift type for smooth, continuous power delivery
One-piece main shaft positions SAE C output flange at rear of transmission for improved pump clearance
Wet-spline output lubrication extends PTO and pump shaft life in high-demand applications
Continuous torque rating up to 670 lb-ft (908 Nm); intermittent rating 501+ lb-ft
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Tech Specs
- Transmission Compatibility: Allison 3000 and 4000 Series
- Mounting Type: 10-Bolt
- Shift Type: Constant Engagement (Constant Mesh)
- Input Gear Designator: FJ - Allison World Transmissions
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C (XS)
- Lubricant/Output: Wet Spline
- Continuous Torque Rating: 670 lb-ft / 908 Nm (verify on application pages for actual rated values)
- Intermittent Torque Rating: 501+ lb-ft / 501+ Nm
- 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
