The Chelsea 899KAFJW-M5XS or 899KAFJWM5XS is a constant mesh Power Take-Off from the Chelsea 899 Series, engineered specifically for Allison 4700 Series transmissions. The 10-bolt mounting design positions the PTO housing between the transmission and frame rail, relocating the pump output flange to the rear of the transmission for improved clearance. Output is an SAE C pump spline (1-1/4 in., 14-tooth) with wet-spline technology to extend pump shaft life under demanding duty cycles. The one-piece main shaft eliminates input splines between the PTO and the output extension. Common applications in the 899 Series include aerial trucks, fire and rescue apparatus, truck cranes, and refuse vehicles. Call us to confirm proper fit for your specific transmission configuration.
Features
Chelsea 899 Series constant mesh (non-shiftable) Power Take-Off
10-bolt mounting designed for Allison 4700 Series transmissions
Pump output flange relocated to rear of transmission for improved pump clearance
SAE C output: 1-1/4 in., 14-tooth wet-spline pump interface
One-piece main shaft eliminates input splines between PTO body and output
Suited for aerial, fire and rescue, truck crane, and refuse truck applications
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Constant Mesh
- Transmission Application: Allison 4700 Series
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C - 1-1/4 in., 14-Tooth Pump Spline
- Output: Wet Spline
- Series Intermittent Torque Rating: 501+ lb-ft
- Series Output Power: 56+ HP
Additional Information
Parts Manual: Chelsea 899 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
