Which steps must be done when replacing a master cylinder?

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Multiple Choice

Which steps must be done when replacing a master cylinder?

The main point being tested is ensuring the brake hydraulic system is free of air after installing a replacement master cylinder. The most important step is to bleed the brake lines after installation so any air introduced during the replacement is purged and the pedal feels firm. Bench bleeding the master cylinder before installation can be helpful on some designs, but it isn’t universally required for all vehicles, and air can be introduced later if the system isn’t bled after installation. So, the emphasis is on installing the unit and then bleeding the system to remove air and restore proper braking feel. The other options either add steps that aren’t mandatory in every case (like measuring pushrod height) or suggest skipping essential steps in some situations.

The main point being tested is ensuring the brake hydraulic system is free of air after installing a replacement master cylinder. The most important step is to bleed the brake lines after installation so any air introduced during the replacement is purged and the pedal feels firm. Bench bleeding the master cylinder before installation can be helpful on some designs, but it isn’t universally required for all vehicles, and air can be introduced later if the system isn’t bled after installation.

So, the emphasis is on installing the unit and then bleeding the system to remove air and restore proper braking feel. The other options either add steps that aren’t mandatory in every case (like measuring pushrod height) or suggest skipping essential steps in some situations.

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