The ATC 9996876 Guide Pins are precision alignment dowels designed for use with Volvo I-Shift and Mack M-Drive automated manual transmissions. These guide pins help properly align the control housing to the transmission main housing during reassembly, preventing misalignment of critical internal components such as the tonewheel or shift forks.
During overhaul or maintenance of the transmission control housing, technicians insert the 9996876 pins into the designated holes of the main transmission housing to act as guides. Once the control housing is seated and fastened correctly, the pins are removed and replaced with standard mounting bolts. This ensures the control housing is perfectly aligned before final tightening.
Ideal for professional repair shops, fleet service centers, and heavy-duty drivetrain technicians, these guide pins help reduce installation error, prevent internal damage, and streamline the assembly process.
Key Features & Benefits
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Precision alignment pins for Volvo I-Shift and Mack M-Drive transmissions
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Ensures correct seating of control housing, reducing risk of internal component damage (e.g. tone wheel)
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Easy to use: insert pins prior to final assembly, then remove for final bolting
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Made to OEM spec and included in tool bulletins as alignment dowels
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Helps prevent misalignment of shift fork and control housing assemblies
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Useful in transmission rebuilds, service repairs, and control housing replacement