The Chelsea 899UBFJW-M5XS or 899UBFJWM5XS is a constant mesh Power Take-Off from the Chelsea 899 Series, engineered specifically for Allison 4700 Series transmissions. The design positions the pump mounting flange at the rear of the transmission, giving the pump room to breathe in tight frame-rail installations. Mounting is via a 10-bolt pattern, and the output is an SAE C 1-1/4" - 14-tooth wet spline shaft, which extends spline life under demanding duty cycles. The 899 Series is rated for intermittent torque above 501 lb-ft with output power exceeding 56 HP at the series level. Typical applications include aerial trucks, fire and rescue, refuse trucks, and truck cranes. Sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
Chelsea 899 Series PTO, part number 899UBFJW-M5XS or 899UBFJWM5XS
Designed to fit Allison 4700 Series transmissions
10-bolt mounting pattern with rear-mounted pump flange for improved pump clearance
Constant mesh (non-shiftable) operation
SAE C output: 1-1/4" - 14-tooth wet spline shaft for extended pump spline life
Series intermittent torque rating: 501+ lb-ft; output power: 56+ HP
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Constant Mesh
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C 1-1/4" - 14-Tooth Pump Spline (Wet Spline)
- Intermittent Torque: 501+ lb-ft / 501+ Nm
- Output Power: 56+ HP / 51+ kW
- Lubricant Type: Wet Spline (W)
- Transmission Fit: Allison 4700 Series
Additional Information
Parts Manual: Chelsea 899 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
