The Chelsea 890TCFJW-B5AF is a 10-bolt, hydraulic PowerShift Power Take-Off from the Chelsea 890 Series, engineered specifically for Allison 3000 and 4000 Series transmissions. The 890 Series positions the pump mounting flange at the rear of the transmission, creating additional clearance in tight frame-rail installations. Output is SAE C with Wet Spline technology, which extends service life on the PTO and pump shaft in continuous, high-demand duty cycles. The one-piece main shaft eliminates the input splines found in PTO-plus-extension setups. Typical applications include aerial trucks, fire and rescue apparatus, truck cranes, and refuse trucks. Available from Pro Gear and Transmission.
Features
Chelsea 890 Series Power Take-Off, part number 890TCFJW-B5AF
10-bolt mounting for Allison 3000 and 4000 Series transmissions
Hydraulic PowerShift (hot shift) engagement
SAE C output flange and shaft
Wet Spline output for extended PTO and pump shaft service life
Rear-mounted pump flange improves clearance between transmission and frame rail
Tech Specs
- Product Series: Chelsea 890
- Part Number: 890TCFJW-B5AF
- Mounting Type: 10-Bolt
- Input Gear: Allison 3000 and 4000 Series (FJ designation)
- Shift Type: Hydraulic PowerShift
- Output Shaft Type: SAE C
- Outlet Flange Type: SAE C
- Lubricant/Output Style: Wet Spline
- Intermittent Torque Rating: 501+ lb-ft (series rated)
- Output Power: 56+ HP / 51+ kW (series rated)
- Shaft Power: 64 HP at 500 RPM, 128 HP at 1,000 RPM
Additional Information
The 890 Series is a single-unit design, not a PTO paired with a separate extension. The clutch is positioned at the rear of the PTO housing, allowing the gear section to sit tightly against the transmission for maximum frame clearance. The unit can be ordered for transmissions equipped with or without a cooler, a retarder, or both. Common applications include aerial trucks, fire and rescue trucks, pumper cleaners, 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.
