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Description
116-1946 – Toro Pump Drive Sheave (Genuine Toro OEM Part)
The Toro 116-1946 is a genuine OEM pump drive sheave, engineered to transmit power efficiently from the engine drive system to the hydraulic pump on compatible Toro lawn and turf equipment. As a critical component of the hydraulic drive system, this sheave ensures smooth belt engagement, proper pump speed, and reliable machine operation.
Manufactured to Toro’s original equipment specifications, the pump drive sheave is precision-machined to maintain correct belt alignment and reduce vibration under continuous load. Using a genuine Toro sheave ensures proper fitment, optimal power transfer, and long service life compared to non-OEM alternatives.
Product Details
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Manufacturer Part Number: 116-1946
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Brand: Toro
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Part Type: Sheave – Pump Drive
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Category Code: 2PX
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System: Hydraulic pump / drive belt system
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Function: Transfers engine power to hydraulic pump
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Material: Heavy-duty machined steel
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OEM Status: Genuine Toro OEM replacement
Function
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Drives the hydraulic pump via belt connection
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Maintains correct belt tracking and alignment
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Supports smooth and efficient hydraulic operation
Compatible With Toro Equipment
This pump drive sheave is used on select Toro riding mowers and zero-turn mowers equipped with hydraulic drive systems, including applications such as:
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Zero-turn mowers
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Commercial riding mowers
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Equipment using belt-driven hydraulic pumps
(Exact compatibility depends on Toro model and configuration.)
How It’s Used
The sheave mounts to the engine or pump drive shaft, where it engages the drive belt connected to the hydraulic pump. As the engine runs, the sheave transfers rotational force through the belt, powering the hydraulic system.
Proper alignment and secure mounting are essential to prevent belt wear and ensure consistent hydraulic performance.
Suggested Maintenance
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Inspect the sheave during belt or hydraulic system service
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Check for groove wear, cracks, or deformation
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Ensure belt alignment and proper tension
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Replace the sheave if excessive wear causes belt slippage
The Toro 116-1946 Pump Drive Sheave is used in OEM-specified Toro hydraulic drive systems where durability, precise alignment, and reliable power transmission are essential.

