The Chelsea 897KAFJW-M5XY or 897KAFJWM5XY is a constant-engagement Power Take-Off from the 897 Series, engineered specifically for Allison World Transmissions (3000 and 4000 Series). It uses a 10-bolt mounting pattern with an SAE C outlet flange and SAE C ("XS") output shaft. Continuous torque rating reaches 670 ft-lb (908 Nm); intermittent torque is rated at 501+ ft-lb. Shaft power output at 1,000 RPM is 128 HP (95 kW). The one-piece main shaft eliminates intermediate input splines, and the wet-spline output extends pump shaft life in demanding service. The pump interface positions at the rear of the transmission, improving clearance between the housing and the frame rail. Typical applications include aerial, fire and rescue, snow and ice, and refuse trucks. Call us to confirm proper fit for your specific Allison application.
Features
Fits Allison World Transmissions (3000 and 4000 Series) via 10-bolt mounting pattern
Constant-engagement (constant mesh) output shift type
SAE C outlet flange and SAE C ("XS") output shaft
Continuous torque rating up to 670 ft-lb (908 Nm); intermittent torque 501+ ft-lb
Wet-spline output lubricates under load to extend PTO and pump shaft life
One-piece main shaft with rear-positioned pump interface for improved frame-rail clearance
Tech Specs
- Transmission Fit: Allison World Transmissions (3000 and 4000 Series)
- Mounting Type: 10-Bolt
- Output Shift Type: Constant Engagement (Constant Mesh)
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C ("XS")
- Continuous Torque: 670 ft-lb / 908 Nm (verify actual rating on application pages)
- Intermittent Torque: 501+ ft-lb / 501+ Nm
- Shaft Power: 64 HP / 48 kW at 500 RPM; 128 HP / 95 kW at 1,000 RPM
- Output Power: 56+ HP / 51+ kW
- Lubrication: Wet Spline
- Dimensions (H x W x L): 13 in. x 11.75 in. x 31.38 in.
Additional Information
Parts Manual: Chelsea 897 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
