The Chelsea 660 Series Power Take-Off Assembly, part number 660GFAHX-A3AZ or 660GFAHXA3AZ, is a 6-bolt mount PTO engineered for medium to heavy duty vocational applications including dump trucks, aerial devices, service trucks, and snow removal equipment. Shift is wire/cable mechanical. The 1-1/4" round output shaft with key delivers up to 375 lb-ft intermittent torque. Shaft power output runs 36 HP at 500 RPM, 71 HP at 1000 RPM, and 107 HP at 1500 RPM. Compatible transmissions include Eaton/Fuller, Volvo/Mack, Hino, and other 6-bolt manual units. One-piece gears and cast iron bearing caps contribute to the series' load-bearing capability. Call us to confirm proper fit for your specific transmission.

• Intermittent Torque: 375 lb-ft (508 Nm) - Check Application Pages for Actual Torque Ratings
• Shift Type: Wire/Cable, Mechanical
• Output Power: 56+ HP (51+ kW)
• Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Hino, Other 6-Bolt Manual
• Output Shaft Type: 1-1/4" Round with Key
• Mounting Type: 6-Bolt
• Shaft Power: 36 HP (27 kW) at 500 RPM, 71 HP (53 kW) at 1000 RPM, 107 HP (80 kW) at 1500 RPM
• Continuous Operation: Yes, with 30% de-rating

The Chelsea 660 Series is suited for aerial, construction, vocational, and municipal equipment applications. Typical uses include blower and product pumps, aerial devices, service trucks, dump trucks and trailers, and snow and ice removal equipment. The series offers four internal speed ratios and ten shift options across its lineup. Continuous operation is supported with a 30% torque de-rating applied.