The Chelsea 890LGFJW-B5AC is a hydraulic PowerShift Power Take-Off from the Chelsea 890 Series, engineered specifically for Allison 3000 and 4000 Series transmissions. The 890 Series mounts via a 10-bolt flange and positions the pump output at the rear of the transmission, improving clearance in tight frame-rail installations. The SAE C output shaft uses Wet Spline Technology to extend PTO and pump shaft life under demanding duty cycles. Rated at 56+ HP and 501+ lb-ft intermittent torque at the series level, the 890 Series suits aerial trucks, fire and rescue apparatus, refuse trucks, and truck crane applications. Sold by Pro Gear and Transmission.
Features
Designed for Allison 3000 (MD) and 4000 (HD) Series transmissions
Hydraulic PowerShift (hot shift) engagement
10-bolt mounting flange
SAE C output shaft with Wet Spline Technology for extended pump shaft life
Output power: 56+ HP / 51+ kW at series level
Intermittent torque rating: 501+ lb-ft / 501+ Nm at series level
Tech Specs
- Series: Chelsea 890
- Transmission Fit: Allison 3000 (MD) and 4000 (HD) Series
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Output Shaft Type: SAE C with Wet Spline
- Outlet Flange Type: SAE C
- Output Power (series): 56+ HP / 51+ kW
- Intermittent Torque (series): 501+ lb-ft / 501+ Nm
- Shaft Power (series): 64 HP at 500 RPM; 128 HP at 1000 RPM
Additional Information
The Chelsea 890 Series is a single-unit PTO, not a PTO-plus-extension assembly. Its one-piece main shaft eliminates input splines between the PTO body and the output extension, and the clutch is positioned at the rear of the housing so the gear section tucks tightly against the transmission for maximum frame-rail clearance. The 890 Series can be configured for transmissions equipped with or without a cooler, a retarder, or both. Typical applications include aerial lift trucks, fire and rescue pumpers, refuse trucks, and truck cranes where pump clearance and high continuous torque are critical.Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
