The Chelsea 890RDFJW-G5XS or 890RDFJWG5XS is a hydraulic PowerShift PTO from the Chelsea 890 Series, engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt flange and positions the SAE C output shaft to the rear of the transmission, adding clearance between the pump and the frame rail that side-mount PTOs cannot provide. The main shaft is a single one-piece design with no input splines between the PTO body and the output extension. Wet-spline lubrication is built in to protect the output shaft and pump drive splines under continuous use. Continuous-duty torque for the 890 Series reaches 670 lb-ft, with intermittent ratings above 501 lb-ft. Shaft power at 1,000 RPM is 128 HP. Common applications include aerial trucks, fire and rescue, refuse, and truck cranes. Call us to confirm proper fit for your specific Allison-equipped chassis.
Features
Chelsea 890 Series PTO for Allison 3000 MD and 4000 HD Series transmissions
10-bolt mounting, fits between transmission and frame rail with an additional rear-support bracket
SAE C (XS) output shaft positioned at the rear of the transmission for improved pump clearance
One-piece main shaft eliminates input splines between PTO body and output extension
Wet-spline output lubrication extends PTO and pump shaft life in demanding duty cycles
Continuous-duty torque rating up to 670 lb-ft; shaft power 64 HP at 500 RPM and 128 HP at 1,000 RPM
Tech Specs
- Transmission Application: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C (XS)
- Lubricant: Wet Spline
- Continuous Torque: 670 lb-ft (check application pages for actual torque ratings)
- Intermittent Torque: 501+ lb-ft
- Output Power: 56+ HP
- Shaft Power: 64 HP at 500 RPM; 128 HP at 1,000 RPM
Additional Information
Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
