Grinding Noises
When a grinding noise is detected first locate the area of the it is being generated
from. Most grinding noises will be being generated while driving, if you are having
a hard time detecting the location of the grinding sound, have a helper ride along
in the rear seat to give a new perspective on the origin of the grinding noise.
A grinding noise can be generated by many things from
worn out brake
pads to axle bearing
failure. Once a grinding sound has been detected action must be prompt. Grinding
in most cases is telling you something has failed or is failing. We have listed
the most common causes of grinding noises below:
Grinding Noise (grinding balls) Car Grinding Repair Guide: Worn Out Brake Pads or Shoes: The brake pads on your car are designed to slow the vehicle when applied. If the brake pads are completely worn out they will make a grinding noise when the brakes are applied. The grinding noise is created when the pad is forced against the brake rotor in normal braking operation. To check for this condition inspect the brake pads in question. The brake pads should have composite material between the pad backing plate and the brake rotor, or on the rear of the vehicle brake drum and shoes. If a brake grinding noise is allowed to continue, brake operation failure could occur. The rotor featured below is a perfect example of what can happen if a brake grinding noise is left unattended.
Broken Brake Rotor When a grinding brake rotor is neglected, it will cause the brake system to fail due to the separation of the rotor hat (center) from the outer web (braking surface). Additional problems the can occur include the brake pad to fall out completely or the brake caliper to blow out a piston. Either condition will cause brake operation failure. Do not drive the vehicle in this condition, brake operation failure will occur. To inspect or replace your brake pads observe the video below:
Replacing Front Brake Pads and Rotor VideoChecking Engine and Transmission Mounts: The engine mounts in your car are designed to hold the engine and transmission in place. When these mounts fail it will allow the engine to settle onto the car frame producing a grinding noise. To inspect for this condition the car will need to be lifted and the engine mounts inspected. Look for separation of the rubber and metal mounts that hold the mount together. If separation is detected the mount must be replaced.Checking Axle Bearing Failure: An axle bearing is designed to support the weight of the vehicle while allowing the wheels to rotate. These bearings are manufactured with high grade steel that resists wear under extreme conditions. When an axle bearing fails it allows metal to contact metal under pressure with a linear motion creating a grinding noise. Once an axle bearing fails it cannot be repair, replacement is required. Remove axle bearing and replace with new and recheck. Some vehicles are equipped with a bearing hub assembly. The bearing below is the style of bearing is replaced by un-bolting the bearing hub assembly and replacing it with new.
Axle Bearing Hub
Other bearing designs include separated bearings that include inner and outer bearings with bearing races, a four piece set. Separated bearings require an inboard seal attached to the bearing hub. This seal rides on the spindle to hold grease inside of the bearing hub, keeping lubrication inside of the bearings.
Axle Bearing/Race Set with Seals
Grinding Noise (grinding balls) Car Grinding Repair Guide: Worn Out Brake Pads or Shoes: The brake pads on your car are designed to slow the vehicle when applied. If the brake pads are completely worn out they will make a grinding noise when the brakes are applied. The grinding noise is created when the pad is forced against the brake rotor in normal braking operation. To check for this condition inspect the brake pads in question. The brake pads should have composite material between the pad backing plate and the brake rotor, or on the rear of the vehicle brake drum and shoes. If a brake grinding noise is allowed to continue, brake operation failure could occur. The rotor featured below is a perfect example of what can happen if a brake grinding noise is left unattended.
Broken Brake Rotor When a grinding brake rotor is neglected, it will cause the brake system to fail due to the separation of the rotor hat (center) from the outer web (braking surface). Additional problems the can occur include the brake pad to fall out completely or the brake caliper to blow out a piston. Either condition will cause brake operation failure. Do not drive the vehicle in this condition, brake operation failure will occur. To inspect or replace your brake pads observe the video below:
Replacing Front Brake Pads and Rotor VideoChecking Engine and Transmission Mounts: The engine mounts in your car are designed to hold the engine and transmission in place. When these mounts fail it will allow the engine to settle onto the car frame producing a grinding noise. To inspect for this condition the car will need to be lifted and the engine mounts inspected. Look for separation of the rubber and metal mounts that hold the mount together. If separation is detected the mount must be replaced.Checking Axle Bearing Failure: An axle bearing is designed to support the weight of the vehicle while allowing the wheels to rotate. These bearings are manufactured with high grade steel that resists wear under extreme conditions. When an axle bearing fails it allows metal to contact metal under pressure with a linear motion creating a grinding noise. Once an axle bearing fails it cannot be repair, replacement is required. Remove axle bearing and replace with new and recheck. Some vehicles are equipped with a bearing hub assembly. The bearing below is the style of bearing is replaced by un-bolting the bearing hub assembly and replacing it with new.
Axle Bearing Hub
Other bearing designs include separated bearings that include inner and outer bearings with bearing races, a four piece set. Separated bearings require an inboard seal attached to the bearing hub. This seal rides on the spindle to hold grease inside of the bearing hub, keeping lubrication inside of the bearings.
Axle Bearing/Race Set with Seals