The Chelsea 890NDFJW-B3CK or 890NDFJWB3CK is a hydraulic PowerShift PTO assembly built for Allison 3000 MD and 4000 HD Series transmissions. It mounts with a 10-bolt pattern and delivers an SAE C output shaft with Wet Spline lubrication to extend pump shaft life under demanding duty cycles. The 890 Series design positions the pump mounting flange at the rear of the transmission, giving additional clearance between the PTO and the frame rail. A one-piece main shaft eliminates the input splines found on conventional PTO-plus-extension setups, and the clutch sits at the rear of the housing to keep the gear section tightly nested against the transmission. Continuous torque rating reaches 670 ft-lb, with shaft power of 64 HP at 500 RPM and 128 HP at 1,000 RPM. Common applications include aerial trucks, fire and rescue apparatus, refuse trucks, and truck cranes. Call us to confirm proper fit for your specific transmission configuration.
Features
Hydraulic PowerShift (hot-shift) operation for engagement under load
10-Bolt mounting pattern for Allison 3000 MD and 4000 HD Series transmissions
SAE C output shaft with Wet Spline lubrication to extend PTO and pump shaft life
Extended shaft design moves the pump mounting flange rearward for improved pump clearance
One-piece main shaft eliminates input splines between the PTO body and the output extension
Continuous torque rating up to 670 ft-lb; shaft power 64 HP at 500 RPM and 128 HP at 1,000 RPM
Tech Specs
- PRODUCT SERIES: Chelsea 890
- TRANSMISSION APPLICATION: Allison 3000 MD and 4000 HD Series
- MOUNTING TYPE: 10-Bolt
- SHIFT TYPE: Hydraulic PowerShift
- OUTPUT SHAFT TYPE: SAE C with Wet Spline ("XS") Output
- OUTLET FLANGE TYPE: SAE C
- CONTINUOUS TORQUE RATING: 670 ft-lb (see application pages for verified rating by configuration)
- INTERMITTENT TORQUE RATING: 501+ lb-ft
- OUTPUT POWER: 56+ HP
- SHAFT POWER: 64 HP at 500 RPM / 128 HP at 1,000 RPM
- LUBRICANT: 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.
