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The JASON INDUSTRIAL 3L370 is a fractional horsepower V-belt designed for light-duty power transmission applications. V-belts in the 3L series are wrapped, narrow-profile belts that transfer rotational power between sheaves in motors, fans, blowers, and small machinery. The 3L designation indicates a top width of 3/8 inches and a specific cross-section depth suited for fractional horsepower drives. This belt is a standard replacement component installed by HVAC technicians, equipment mechanics, and maintenance professionals working on residential and light commercial equipment.
The 3L370 is used in fractional horsepower drive systems found in residential HVAC units, window air conditioners, small blowers, agricultural equipment, and general light-duty machinery. The 370 in the part number indicates an outside circumference of 37.0 inches. It fits standard 3L-series sheaves and pulleys designed for fractional horsepower V-belt drives.
Designed as an OEM-style replacement for fractional horsepower drive systems using standard 3L-series V-belt sheaves and pulleys.
V-belt replacement should be performed by a qualified technician after disconnecting and locking out all power to the equipment. Do not pry or force the belt onto sheaves; always relieve tension by adjusting the motor mount before installation. Check sheave alignment and condition before installing the new belt, and set belt tension according to the equipment manufacturer specifications. OSHA lockout/tagout procedures apply during service.
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