The Chelsea 524 Series rear mount power take-off assembly, part number 524XTAHX-Q-XY or 524XTAHXQXY, is designed specifically for ZF transmissions with a 24V pneumatic shift circuit. This PTO mounts to the rear aperture of compatible transmissions, which helps address clearance constraints that front- or side-mount configurations can create. The 524 Series features a compact two-gear housing with three available speed ratios, a DIN 5462 output shaft, and an ISO 7653 80mm x 80mm mounting interface. Series intermittent torque capacity reaches 407 lb-ft, with output power ranging from 49 to 57 HP at 100 RPM output shaft speed. Six shift options are integrated directly into the housing for a space-saving layout. Call us to confirm proper fit for your specific transmission and application.

• Shift Type: Pneumatic, 24V
• Mounting Type: Rear Mount
• Transmission Compatibility: ZF
• Mounting Interface: ISO 7653, 80mm x 80mm
• Output Shaft Type: DIN 5462
• Input Spline: Dry Spline
• Series Intermittent Torque: 407 lb-ft
• Series Output Power: 49 to 57 HP (at 100 RPM output shaft)
• Product Series: Chelsea 524

The Chelsea 524 Series is engineered for vocational truck applications including refuse, aerial, fire, tippers, and sewer and sanitation equipment. The rear mount design uses the rear aperture available on select transmissions - making it a practical fit when side-mount clearance is limited. Six shift options are integrated into the PTO housing itself, and two direct mount pump output flanges are included as standard. A quick-assembly sealed bayonet connector is used for the indicator switch. The 524 Series also supports input adapters for Mack mDrive, Volvo I-Shift, and Eaton Endurant transmissions in addition to ZF - contact Pro Gear and Transmission to confirm which adapter configuration applies to your chassis.