The Chelsea 890HEFJW-G5XS or 890HEFJWG5XS is a hydraulic PowerShift PTO assembly from the 890 Series, designed specifically for Allison 3000 MD and 4000 HD Series transmissions. It uses a 10-bolt mount and delivers an SAE C output shaft with Wet Spline lubrication to extend pump shaft life under demanding duty cycles. Continuous torque rating reaches 670 lb-ft; intermittent torque is rated at 501+ lb-ft. Shaft power output is 64 HP at 500 RPM and 128 HP at 1,000 RPM. The one-piece main shaft eliminates input splines between the PTO body and the output extension, and the rear-mounted clutch tucks the housing tightly against the transmission to improve pump clearance. Common applications include fire and rescue trucks, aerial trucks, refuse trucks, and truck cranes. Call us to confirm proper fit for your application.
Features
10-bolt mounting for Allison 3000 MD and 4000 HD Series transmissions
Hydraulic PowerShift engagement (hot shift capable)
SAE C output shaft with Wet Spline technology to extend PTO and pump shaft life
Continuous-duty torque rating up to 670 lb-ft; intermittent torque 501+ lb-ft
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
One-piece main shaft with rear-mounted clutch improves clearance between pump and frame rail
Tech Specs
- Transmission Application: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift
- Output Shaft Type: SAE C with Wet Spline
- Outlet Flange Type: SAE C
- 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
- Lubrication: Wet Spline
Additional Information
Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
