The slack adjuster is the part of an air-brake system that is used to adjust the brakes when needed. The slack adjuster is located on the air canister on the axle housing near the wheel. On vehicles with drum brakes, it is between the pushrod and the S-cam. On vehicles with disc brakes, it is between the pushrod and the power screw.Continue Reading
Air-brake systems use compressed air to transmit pressure from the brake pedal to the brake pads. They are typically used in larger vehicles such as trucks and buses. All air-brake systems run the risk of moving out of adjustment over time. Out-of-adjustment brakes are the most reported problem from roadside vehicle safety inspectors. Out-of-adjustment brakes constitute a safety hazard, as vehicles with excessive brake slack can be difficult to stop.
All vehicles manufactured since 1994 have automatic slack adjusters that adjust themselves during full brake applications. Automatic adjusters should only require manual adjustment during installation. If a brake system with automatic slack adjusters requires periodic adjustments, it is an indication that the automatic slack adjusters are defective and should be repaired. All brake systems, whether they have automatic or manual slack adjusters, should receive regularly scheduled maintenance checkups.Learn more about Brakes
The first step to troubleshooting an anti-lock brake system is checking the fuse that manages the brakes. If the fuse is functional, check the harness of the ABS controller for signs of corrosion. Then check the wheel sensors. If those are in order, you might need a new ABS controller.Full Answer >
During a hard stop, if the brakes remain engaged with hard steady pressure for too long, the brake pads can overheat and cause the moving parts of the braking system to lock in position. Brake lock up is a particular danger on wet and slippery roads. Once the braking system locks up, much of the vehicle's control and stopping ability is compromised.Full Answer >
To repair a brake line, you must remove the old brake line, install the new brake line, add brake fluid to the system and bleed the brakes. This can be done without professional help, but it requires brake fluid, new brake lines, open-end wrenches and clean rags. Safely support the car using jack stands before beginning repairs.Full Answer >
Gravity bleeding brakes involves attaching clear tubing to the vehicle's bleeders and manipulating the tubing to release trapped air bubbles in the braking system. The required supplies are an automotive jack, four jack stands, 1 quart of brake fluid, 5 feet of 3/16-inch tubing, an empty quart jar, a hammer, masking tape, vise grip pliers and an open-end wrench. This procedure takes about 30 minutes.Full Answer >