Braking Jitter Caused by Brake Drum Failure of Automobile Front Axle Cause of failure of front axle brake drum: front wheel or rear wheel brake drum is out of round; Or rim interference brake drum out of round (has nothing to do with the brake and other parts) determination method:

Simple judgment method: jack up the front wheel, adjust the brake clearance to the contact friction between the brake drum and the friction plate, rotate the brake drum for one week to see if there is any obvious blocking point (slight blocking is a normal phenomenon), if there is any obvious blocking point, it is judged that the front axle brake drum of the automobile is out of round.

Loosen the hub nut (tire nut: tire rim combination and brake drum hub combination link fastening nut) in the blocking state, let stand for 3-5 minutes, and rotate the brake drum. If the blocking point is reduced or eliminated, it is determined that the rim interferes with the front axle brake drum of the automobile and is out of round.

Judging method of automobile front axle brake drum failure standard: use specific tooling, dial indicator and magnetic gauge seat to measure the diameter jump of automobile front axle brake drum. if the brake diameter is less than 400 mm, the brake surface jump ≤0.17 (0.15mm required: only when the brake surface jump exceeds 0.17mm after road test verification) is the qualified standard. if the brake diameter of automobile front axle ≥400mm, the brake surface jump ≤0.25 (0.2mm required: 0.25mm determined by road test verification) is the qualified standard (only refers to the failed vehicle).

After-sales scope of brake drum on front axle of automobile: If the brake drum is out of round during the first warranty period of the whole vehicle, we will give it three guarantees.

If the brake drum is out of round outside the first warranty period of the whole vehicle, we, Yihe axle company, will not handle it in three guarantees (the use characteristic of the brake drum is more worn and more round).

It is suggested that the rim supplier should be held responsible for the false out-of-round of the brake drum caused by rim interference (generally due to the flatness of the rim web: if the flat surface of the contact link between the rim and the brake drum or hub is uneven, because its strength is higher than that of the brake drum, the brake drum of the front axle of the automobile will be pressed after fastening).

Zhucheng Yihe Axle Co., Ltd. is a professional axle manufacturer specializing in R & D, production and sales. It specializes in producing Front axle, Front steer axle, Axle assembly, Car hauler front axle,Front axle shaft and other products.