The Chelsea 890TEFJW-D5XS or 890TEFJWD5XS is a hydraulic PowerShift (hot-shift) PTO from the Chelsea 890 Series, engineered specifically for Allison 3000 MD and 4000 HD Series transmissions. The 890 Series mounts with 10 bolts and positions the SAE C output flange at the rear of the transmission, giving hydraulic pumps the clearance they need in tight frame-rail installations. The one-piece main shaft eliminates input splines between the PTO and the output extension, and the wet-spline output (designated W) extends pump shaft life under demanding duty cycles. Continuous torque capacity 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, refuse trucks, and truck cranes. A genuine Chelsea part, available from Pro Gear and Transmission. Call us to confirm proper fit for your application.
The Chelsea 890 Series fits neatly between the transmission and the frame rail, locating the pump output to the rear of the transmission for adequate clearance. Unlike a standard PTO-plus-extension setup, the 890 Series is a single unit with a one-piece main shaft, eliminating input splines between the PTO body and the output. The clutch sits at the rear of the PTO housing, allowing the gear section to tuck tightly against the transmission. The wet-spline output extends both PTO and pump shaft life in high-cycle or high-torque service. The 890 Series accommodates Allison transmissions equipped with or without a cooler or retarder. Typical applications include aerial trucks, fire and rescue pumpers, refuse trucks, and truck cranes.
Features
Chelsea 890 Series, engineered for Allison 3000 MD and 4000 HD Series transmissions
10-bolt mounting with SAE C output flange positioned at the rear of the transmission for improved pump clearance
Hydraulic PowerShift (hot-shift) operation
Wet-spline output (W designation) reduces wear on PTO and pump shafts in high-demand applications
Continuous torque rating up to 670 ft-lb; intermittent torque rated at 501+ ft-lb
Shaft power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Tech Specs
- Transmission Compatibility: Allison 3000 MD and 4000 HD Series
- Product Series: 890
- Mounting Type: 10-Bolt
- Shift Type: Hydraulic PowerShift (hot-shift)
- Output Shaft Type: SAE C ("XS" extended output)
- Outlet Flange Type: SAE C
- Lubricant/Spline Type: Wet Spline
- Continuous Torque: 670 ft-lb (check application pages for actual torque ratings)
- Intermittent Torque: 501+ ft-lb
- 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
The Chelsea 890 Series fits neatly between the transmission and the frame rail, locating the pump output to the rear of the transmission for adequate clearance. Unlike a standard PTO-plus-extension setup, the 890 Series is a single unit with a one-piece main shaft, eliminating input splines between the PTO body and the output. The clutch sits at the rear of the PTO housing, allowing the gear section to tuck tightly against the transmission. The wet-spline output extends both PTO and pump shaft life in high-cycle or high-torque service. The 890 Series accommodates Allison transmissions equipped with or without a cooler or retarder. Typical applications include aerial trucks, fire and rescue pumpers, refuse trucks, and truck cranes.
