SOS brake & braking system guaranteed success
Brake System
What is true about the secondary lining in a single anchor bendix drum type rear brake? The
secondary lining is longer than the primary lining.
In a drum brake, what is the primary shoe lining area compared to the secondary shoe li...
What is true about the secondary lining in a single anchor bendix drum type rear brake? 🚗 The
secondary lining is longer than the primary lining.
In a drum brake, what is the primary shoe lining area compared to the secondary shoe lining area? 🚗
The primary shoe lining area is smaller and faces towards the front of the car.
When brake fluid appears dirty and dark during a brake overhaul, what should you do? 💧 Flush the
system before installing new parts.
What should you do when bleeding the brake system on a vehicle with power brakes? 🚗 None of the
above.
What could be a symptom of over-torqued lug nuts? 🚗 A brake pedal pulsation during braking.
What is the proper sequence for bleeding brake lines on most rear-wheel drive vehicles? 🚗 RR, LR, RF,
LF.
Caliper and Brake Pads
Where is the "square cut seal" usually located in disc brake caliper assemblies? 🚗 In the caliper piston
bore.
What tool should you use to remove pistons from calipers during an overhaul? 🚗 Compressed air.
How are sliding caliper disc brake pads kept in adjustment? 🚗 By the square cut piston seal.
, Power Booster and Master Cylinder
What would cause a cracked or torn vacuum diaphragm in a power booster to produce? 💪 Hard pedal
with very high effort required.
What is likely to cause a vibration or pulsating movement when applying the brakes on a car with disc-
drum brakes? 🚗 A rotor thickness variation.
Troubleshooting
What could cause a "grabbing" feeling in the right front brake while test driving? 🚗 Brake fluid or grease
on the brake linings.
What is likely to cause the brake pedal to slowly go to the floor when applying normal braking pressure?
💧 A leaking master cylinder primary piston seal.
What could cause a rattle in a single-piston disc brake assembly that goes away when brakes are
applied? 🚗 Loose pads in the caliper.
Drum Brakes
What could cause a scraping sound coming from one rear brake that stops when brakes are applied? 🚗
A broken shoe hold-down spring or pin.
If a drum brake self-adjuster seizes up, what is likely to happen? 💪 A low pedal.
Rotor and Hub
How can you check for rotor thickness variation? 📏 Dial indicator.
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