The Chelsea 890 Series Power Take-Off, part number 890LDFJW-D5XK or 890LDFJWD5XK, is a hydraulic hot-shift PTO engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. The 890 Series mounts via a 10-bolt pattern and positions the pump output flange to the rear of the transmission, providing improved clearance between the pump and the frame rail. A one-piece main shaft eliminates intermediate input splines, and the clutch is located at the rear of the housing so the gear section tucks tight to the transmission. The SAE C output uses wet-spline technology to reduce wear on the PTO and pump shaft interface. Continuous-duty torque rating for the 890 Series reaches 670 lb-ft, with intermittent torque rated at 501 lb-ft and above. Shaft power is 64 HP at 500 RPM and 128 HP at 1,000 RPM. Common applications include aerial trucks, fire and rescue, 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 output with wet-spline technology to extend PTO and pump shaft life
One-piece main shaft eliminates input splines between PTO body and output extension
Clutch positioned at rear of housing, moving pump output to rear of transmission for improved clearance
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 Fitment: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift (Hydraulic)
- Outlet Flange Type: SAE C
- Output Shaft Type: SAE C ("XS") Output
- Lubricant: Wet Spline
- Intermittent Torque: 501+ lb-ft
- Continuous Torque: 670 lb-ft (check application pages for actual torque ratings)
- Output Power: 56+ HP
- Shaft Power: 64 HP at 500 RPM; 128 HP at 1,000 RPM
Additional Information
The Chelsea 890 Series is a single-unit PTO, not a PTO with a bolt-on extension. This design fits between the transmission and the frame rail, with the housing and gear section tucked tightly to the transmission. An additional bracket at the rear of the transmission provides supplemental support. The 890 Series can be ordered for transmissions equipped with or without a cooler, a retarder, or both. Typical applications include aerial trucks, fire and rescue trucks, pumper-cleaner vehicles, truck cranes, and refuse trucks.Parts Manual: Chelsea 890 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
