The Chelsea 890EFFJW-B5AB is a 10-bolt, hydraulic PowerShift Power Take-Off from the Chelsea 890 Series, engineered specifically for Allison 3000 and 4000 Series transmissions. The 890 Series positions the pump mounting flange at the rear of the transmission, improving pump clearance in tight frame-rail installations. A one-piece main shaft eliminates input splines between the PTO and output extension, and the clutch sits at the rear of the housing to tuck the gear section tightly against the transmission. The SAE C output flange uses Wet Spline Technology to extend PTO and pump shaft life under demanding duty cycles. The series carries an intermittent torque rating above 501 lb-ft and output power above 56 HP. Typical applications include aerial trucks, fire and rescue trucks, refuse trucks, and truck cranes. Available from Pro Gear and Transmission.
Features
Fits Allison 3000 (MD) and 4000 (HD) Series transmissions
10-bolt mounting with SAE C outlet flange and SAE C output shaft
Hydraulic PowerShift (hot shift) engagement
Wet Spline output extends PTO and pump shaft life
One-piece main shaft eliminates input splines between PTO and output extension
Series intermittent torque rating: 501+ lb-ft; output power: 56+ HP
Tech Specs
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C Wet Spline
- Transmission Fit: Allison 3000 (MD) and 4000 (HD) Series
- Input Gear Designator: FJ (Allison 3000 MD and 4000 HD Series)
- Lubricant Feature: Wet Spline (W)
- Series Intermittent Torque: 501+ lb-ft / 501+ Nm
- Series Output Power: 56+ HP / 51+ kW
- Series Shaft Power: 64 HP at 500 RPM; 128 HP at 1000 RPM
Additional Information
The Chelsea 890 Series mounts like a standard side-mounted PTO but includes an additional bracket at the rear of the transmission for added support. It is a single-unit design, not a PTO paired with a separate extension. Common vocational fits include aerial trucks, fire and rescue trucks, refuse trucks, pumper cleaners, and truck cranes. The 890 Series accommodates transmissions equipped with or without a cooler or retarder, or both.Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
