281GTFJP-G5XV Chelsea PTO Assembly

The Chelsea 281GTFJP-G5XV or 281GTFJPG5XV is a hydraulically shifted, hot-shift power take-off from the Chelsea 281 Series, designed for automatic transmissions with a 10-bolt aperture, including Allison and Caterpillar transmissions. This series mounts with a 10-bolt pattern and carries a single, continuous-duty torque rating up to 390 lb-ft. Nine speed ratios span both low and high ranges. The ductile iron bearing cap is 117% stronger than gray iron, and an O-ring sealing configuration between the housing and bearing cap improves clamp load and resists vibrational effects from modern engine designs. Rotatable cast-iron flanges reduce pump clearance interference, and the Wet Spline Lubrication option delivers 7 to 10 times greater shaft life. A genuine Chelsea part, sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.

Features

Chelsea 281 Series hydraulic (PowerShift) hot-shift PTO
10-bolt mounting aperture for Allison and Caterpillar automatic transmissions
Ductile iron bearing cap, 117% stronger than gray iron
O-ring sealing between housing and bearing cap for improved clamp load and vibration resistance
Enhanced clutch pack with 80% thicker steel disks to resist premature tooth wear
Nine speed ratios covering low and high speeds
Wet Spline Lubrication option provides 7 to 10 times greater shaft life
SmartStart feature reduces shock load at start-up
Electronic Overspeed Control (EOC) protects driven equipment
Positive stop for driveline outputs eliminates oil seal damage from coupling

Tech Specs

• Mounting Type: 10-Bolt
• Shift Type: PowerShift (Hydraulic Hot-Shift)
• Continuous Operation: Yes
• Continuous Torque Rating: 390 lb-ft (529 Nm) - verify actual rating on application page
• Output Power: 56+ HP (51+ kW)
• Shaft Power: 37 HP at 500 RPM, 74 HP at 1000 RPM
• Speed Ratios: Nine (including low and high speeds)
• Transmission Compatibility: Allison and Caterpillar automatic transmissions (10-bolt aperture)
• Output Types: SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
• Output Shaft Options: 1-1/4" round with 5/16" key (SmartStart), 3/4"-11T pump spline, SAE B 7/8"-13T pump spline, SAE C 1-1/4"-14T pump spline, DIN 5462 pump spline, 1410 companion flange, DIN 120 flange, DIN 100 flange
• Lubrication: Pressure Lube or Wet Spline option
• Markets: Fire and Rescue, Truck Cranes, Pumper Cleaner, Refuse
• Part Number: 281GTFJP-G5XV or 281GTFJPG5XV

Additional Information

Parts Manual: Chelsea 281 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.