The Chelsea 890LEFJW-G5AF or 890LEFJWG5AF is a hydraulic hot-shift Power Take-Off from the Chelsea 890 Series, engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. It mounts via a 10-bolt pattern and delivers output through an SAE C ("XS") flange, with shaft power rated at 64 HP at 500 RPM and 128 HP at 1,000 RPM. Continuous-duty torque capacity for this series reaches 670 ft-lb. The one-piece main shaft eliminates the inter-unit input splines found on conventional PTO-plus-extension setups. The clutch is positioned at the rear of the housing so the gear section tucks tightly against the transmission, moving the pump mounting flange rearward for improved clearance between the pump and the frame rail. Wet-spline output technology reduces wear on the PTO and pump shaft splines in demanding duty cycles. Common applications include aerial trucks, fire and rescue apparatus, refuse trucks, and truck cranes. Call us to confirm proper fit for your application.
Features
Fits Allison 3000 MD and 4000 HD Series transmissions via 10-bolt mounting
Hydraulic PowerShift (hot-shift) engagement
SAE C ("XS") output flange and shaft
One-piece main shaft eliminates input splines between PTO and extension for added durability
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Wet-spline output extends PTO and pump shaft life in high-demand applications
Tech Specs
- Transmission Application: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift (Hydraulic Hot-Shift)
- Output Shaft Type: SAE C ("XS") Output
- Outlet Flange Type: SAE C
- Input Gear Designator: FJ (Allison 3000 MD and 4000 HD Series)
- Lubricant / Spline: Wet Spline
- Continuous Torque: 670 lb-ft (see application pages for confirmed ratings)
- Intermittent Torque: 501+ lb-ft
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 64 HP (48 kW) at 500 RPM; 128 HP (95 kW) 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.
