Yes, when converting from a single bowl to a dual bowl master cylinder, the push rod often needs to be changed or adjusted to ensure proper operation. Here’s why:
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Length Differences – The depth of the push rod bore in the new dual master cylinder may be different from the single bowl master cylinder, requiring an adjustable push rod to achieve full pedal stroke and proper braking force.
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Attachment Style – Some single bowl master cylinders use a different push rod attachment method compared to dual master cylinders. The adjustable rod ensures compatibility with the new master cylinder and brake pedal assembly.
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Proper Pedal Travel – An adjustable push rod allows fine-tuning of pedal travel and engagement, ensuring that the master cylinder fully actuates without bottoming out or leaving excessive free play.
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Brake Balance & Safety – Proper push rod adjustment ensures even braking force distribution between the front and rear circuits in the dual master cylinder setup.
When installing the new dual master cylinder, it's crucial to properly adjust the push rod so there is a small amount of free play (typically about 1/16” to 1/8”) before engaging the master cylinder. This prevents preloading the brakes while ensuring full activation when pressing the pedal.
Would you like guidance on measuring and adjusting the push rod for your specific setup?
