281GKFJP-B5XV Chelsea PTO Assembly

The Chelsea 281GKFJP-B5XV or 281GKFJPB5XV is a hydraulically shifted hot-shift Power Take-Off from the Chelsea 281 Series, designed for 10-bolt aperture automatic transmissions commonly found on Allison applications. This PTO delivers a single, continuous duty torque rating across nine speed ratios covering both low and high ranges. The bearing cap is ductile iron, rated 117% stronger than gray iron, and the housing-to-bearing-cap seal uses an O-ring configuration to improve clamp load and resist the vibrational effects of modern engine designs. Rotatable cast-iron flanges reduce interference issues at the pump mount, and driveline outputs include a positive stop to eliminate oil seal damage. Electronic Overspeed Control (EOC) is included to protect driven equipment. Cross-references for this unit include 280GKFJP-B5XV and 280GKFJPB5XV. Call us to confirm proper fit for your transmission and application.

Features

Hydraulic hot-shift (PowerShift) operation for 10-bolt automatic transmission apertures, commonly Allison
Ductile iron bearing cap - 117% stronger than gray iron for increased durability
O-ring sealing configuration between housing and bearing cap to improve clamp load and reduce vibrational effects
Nine speed ratios available, including low and high-speed selections
Rotatable cast-iron flanges reduce pump clearance interference
Electronic Overspeed Control (EOC) protects driven equipment; SmartStart option reduces shock load at engagement
Wet Spline Lubrication option provides 7 to 10 times greater output shaft life
Positive stop on driveline outputs eliminates oil seal damage from coupling

Tech Specs

• Mounting Type: 10-Bolt aperture automatic transmission
• Shift Type: Hydraulic hot-shift (PowerShift)
• Speed Ratios: Nine, including low and high speeds
• Bearing Cap Material: Ductile iron (117% stronger than gray iron)
• Seal Type: O-ring configuration, housing to bearing cap
• Output Flange: Rotatable cast-iron (reduces pump clearance interference)
• Lubrication Option: Wet Spline (provides 7 to 10 times greater shaft life)
• Overspeed Protection: Electronic Overspeed Control (EOC)
• Cross-References: 280GKFJP-B5XV or 280GKFJPB5XV; 3252PJE633IC

Additional Information

The Chelsea 281 Series is suited for demanding markets including fire and rescue, truck cranes, pumper cleaner, and refuse applications. The 281 Series is an evolution of the 280 Series platform, adding an 80% thicker steel clutch pack to resist premature wear alongside the upgraded bearing cap and sealing improvements. Parker Chelsea documents covering this series include the 281/288 Series Parts List (HY25-2281-M1/US) and the 267/281/288/871/878 Series Owner's Manual.

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