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World Harvester Parts HST Pump Pin

The support pin is a key pin used in the 45cc HST system to secure, support, and connect hydraulic pump/motor components.
It mainly plays a role in positioning, load-bearing and guiding, ensuring that the plunger, sliding shoe, inclined plate or assembly parts maintain the correct position during operation, preventing deviation or shaking
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Product Advantage


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Structural support: 

bear the radial and axial forces of plunger components or sliding shoes, and maintain system stability.

Positioning connection:

Connect the inclined plate, sliding shoe or plunger assembly to ensure precise fit between components.


Guided motion: 

Guide the sliding shoes or plungers to move along the correct trajectory during the motion.


Prevent component misalignment: 


reduce wear, improve HST system efficiency and service life



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Technical Parameters

ITEMSDESCRIPTION
NamePin
CodeWHST40-08-6
Weight0.02 3 pieces/set
Size(mm)32*Φ2


Product Uses


The support rod pin is generally installed at:


Guide support for plunger assembly


Slipper/Shoe motion trajectory guidance


Swash Plate and Pump Body Connection Point


Joint positions in the pump or motor assembly that require load-bearing or positioning


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Product Operate Guide

Common Fault Symptoms (When It Failures)


Sliding shoes or plunger offset, causing unstable HST output


System noise increases


Walking weakness and slow response


The wear or breakage of the support rod causes the pump body parts to shake



Replacement Tips


When replacing, use the same specification and material pin shaft to ensure matching accuracy


Clean the hole position and pin surface before disassembly and assembly to avoid particle scratches


During installation, lubricating grease or hydraulic oil can be applied appropriately to ensure smooth movement


Check if the support holes are worn, and if there are any abnormalities, it is recommended to repair or replace them simultaneously


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