The Genuine SINOTRUK HOWO Gearbox Shift Fork Block (AZ2229100022) is a small but mighty component that ensures this precision. As a vital piece of sinotruk spare parts, this shift fork block acts as the critical interface between the driver’s input via the shift lever and the internal gear engagement mechanism. It transfers the necessary force to the shift fork, which then moves the synchronizer sleeve to select the desired gear.
Technical Specifications
This component is engineered for seamless integration with the robust HW series transmissions used across the SINOTRUK HOWO truck range.
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Specification
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Value
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Part Number
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AZ2229100022
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Alternative Names
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Fork Pendulum Block, Swing Block, Sliding Block
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Product Name
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Gearbox Shift Fork Block
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Application
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SINOTRUK HOWO, HOWO A7, and other heavy-duty trucks with HW series gearboxes (e.g., HW19710, HW19712)
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Brand
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SINOTRUK (Original OEM)
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Material
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High-Strength, Wear-Resistant Alloy
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Function
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Transfers force from shift shaft to shift fork for gear engagement
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Location
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Internal to Gearbox, mounted on Shift Fork Assembly
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Condition
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Brand New
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Installation Notes
Replacing the shift fork block is an internal gearbox repair that requires significant mechanical expertise and specialized tools. It is strongly recommended that this procedure be performed by a certified technician.
1.Access Requirement: Accessing the shift fork block typically requires removing the gearbox from the vehicle and disassembling the top cover or the entire transmission case. Safety and cleanliness are paramount; any contamination introduced during disassembly can lead to catastrophic gearbox failure.
2.Disassembly: After draining the oil and removing the top cover, carefully identify the shift fork assembly associated with the worn block. The block is usually secured to the fork by a pin or small bolt.
3.Replacement: Remove the old block and thoroughly clean the shift fork surface. Apply a light coating of clean transmission oil to the new AZ2229100022 block before positioning it onto the fork.
4.Securing: Secure the new block using the original or new retaining pin/fastener. Ensure the pin is properly seated and secured to prevent it from coming loose inside the gearbox.
5.Reassembly and Testing: Before closing the gearbox, manually verify that the shift fork and new block slide smoothly and engage the synchronizer sleeve fully. Reassemble the gearbox using new gaskets and seals, refill with the correct transmission oil, and perform a comprehensive test drive to confirm smooth and precise shifting in all gears.
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