The Chelsea 899 Series Power Take-Off, part number 899UAFJW-M5XS or 899UAFJWM5XS, is a constant-mesh PTO engineered specifically for Allison 4700 Series transmissions. It mounts with a 10-bolt pattern and positions the pump output at the rear of the transmission, tucking the gear section tightly against the transmission to maximize clearance between the pump and the frame rail. The output shaft is an SAE C (1-1/4 in., 14-tooth) wet-spline design, which extends service life for both the PTO and the connected pump in demanding duty cycles. Continuous-duty torque reaches up to 670 ft-lb; intermittent torque is rated above 501 ft-lb. Output power exceeds 56 HP. A genuine Chelsea part, sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
Fits Allison 4700 Series transmissions, 10-bolt mounting
Constant-mesh (non-shiftable) design
SAE C outlet flange with 1-1/4 in., 14-tooth wet-spline output shaft
Continuous-duty torque up to 670 ft-lb; intermittent torque above 501 ft-lb
Extended shaft relocates pump flange to rear of transmission for improved pump clearance
Wet-spline output technology reduces wear on PTO and pump shaft in high-demand applications
Tech Specs
- Transmission Manufacturer: Allison 4700 Series
- Mounting Type: 10-Bolt
- Shift Type: Constant Mesh
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C, 1-1/4 in. - 14-Tooth Wet Spline
- Intermittent Torque: 501+ lb-ft (501+ Nm)
- Continuous Torque: Up to 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); at 1000 RPM: 128 HP (95 kW)
Additional Information
