Automobile & Light Truck Certification Test A5 BrakesHydraulic System Diagnosis and RepairEasy
A technician is replacing a brake hose that connects the steel brake line to the caliper. What type of line fitting is MOST commonly used at the steel line connection point?
- ABanjo bolt fitting.
- BFlare nut fitting.
- CQuick-disconnect fitting.
- DCompression fitting.
Show answer & explanationAnswer & explanation
Correct answer: B. Flare nut fitting.
Brake hoses typically connect to steel brake lines using a double-flare fitting with a flare nut. This type of fitting creates a secure, leak-proof seal that can withstand high hydraulic pressures.
Why the other options are wrong
- A. Banjo bolts are used to connect hoses directly to calipers or wheel cylinders, not to steel lines.
- C. Quick-disconnect fittings are not typically used in conventional hydraulic brake systems due to pressure and safety requirements.
- D. Compression fittings are generally not used in brake systems because they can loosen over time and are not designed for the high pressures and vibrations.
Brake Line Fittings
Specialized connectors used to join hydraulic brake lines and hoses, ensuring a leak-free and high-pressure-resistant connection.
- Flare fittings (double or bubble) are common for steel lines.
- Flare nuts secure the connection.
- Banjo bolts are used for caliper/hose connections.
Memory trick: Flares connect lines, banjos bolt to calipers.