The Chelsea 899CAFJW-M3ZS is a constant mesh Power Take-Off from the 899 Series, engineered specifically for Allison 4700 Series transmissions. The 10-bolt mounting configuration positions the SAE C pump flange at the rear of the transmission, tucking the housing tightly against the transmission to maximize clearance between the PTO and the frame rail. The output shaft is an SAE C 1-1/4"-14T pump spline with Wet Spline Technology for extended service life under demanding duty cycles. The one-piece main shaft eliminates input splines between the PTO and the output extension. Rated for 501+ lb-ft intermittent torque and 56+ HP output, the 899 Series suits aerial trucks, fire and rescue, snow and ice, refuse trucks, and truck cranes. Available from Pro Gear and Transmission.
Features
Fits Allison 4700 Series transmissions
10-bolt mounting, SAE C outlet flange
SAE C 1-1/4"-14T Wet Spline pump output for extended shaft life
Constant mesh (non-shiftable) operation
Rear-located pump flange for improved clearance between PTO and frame rail
One-piece main shaft eliminates input splines between PTO body and output extension
Tech Specs
- Series: Chelsea 899 Series
- Transmission Fitment: Allison 4700 Series
- Mounting Type: 10-Bolt
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C 1-1/4"-14T Pump Spline
- Output Shaft Lubrication: Wet Spline
- Shift Type: Constant Mesh
- Intermittent Torque Rating: 501+ lb-ft / 501+ Nm
- Output Power: 56+ HP / 51+ kW
- Dimensions (H x W x L): 13 in. x 11.75 in. x 38.75 in.
Additional Information
Parts Manual: Chelsea 899 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
