The Chelsea 524 Series rear mount power take-off (PTO) assembly, part number 524XTAHX-A-XY or 524XTAHXAXY, is designed with a ZF input adapter for compatibility with ZF-equipped transmissions. The 524 Series uses the rear mount aperture on select transmissions to help eliminate clearance issues that front- or side-mount PTOs can create. The compact two-gear housing offers three speed ratios, pneumatic shift, and direct-mount pump output flanges with DIN 5462 and 4-bolt DIN 5462 output shaft options. Six shift options are integrated into the housing for a space-saving installation. A quick-assembly sealed bayonet connector is included for the indicator switch. Call us to confirm proper fit for your application.

• Shift Type: Pneumatic
• Mounting Type: Rear Mount
• Input Adapter: ZF
• Output Shaft Type: DIN 5462, 4-Bolt DIN 5462
• Mounting Option: ISO 7653 80mm x 80mm Mount
• Lubricant: Dry Spline
• Series Intermittent Torque Rating: up to 407 lb-ft (series-level rating; confirm actual rating for this application)
• Series Output Power: 49 to 57 HP at 100 RPM output shaft (series-level rating; confirm actual rating for this application)
• Part Number: 524XTAHX-A-XY or 524XTAHXAXY

The Chelsea 524 Series is engineered for vocational truck applications including fire, aerial, refuse, tippers, and sewer and sanitation equipment. The two-gear compact housing design provides three speed ratios and is available with input adapters for ZF, Mack mDrive, Volvo I-Shift, and Eaton Endurant transmissions. High-capacity bearings and a space-saving integrated shift design make installation and maintenance straightforward. Applicable owner manuals include the 511/524 Series Owners Manual (ZF) - HY25-1501Z-M1_US and the 511/524 Series Owners Manual (General) - HY25-1501G-M1_US, both published by Parker Chelsea.