OEM Chevrolet HHR Brake Drum

Chevrolet HHR Brake Drum Parts and Q&A

• Drum
  10388690
  Q: How to service and repair a brake drum on Chevrolet HHR?

  A:

  In order to service and repair the brake drum, one would require the following tools: Rotor/Drum Flange Resurfacing Kit (J 41013) and Hub Cleaning Kit (J 42450-A). Brake drums do not need refinished unless there is high corrosion, pitting, cracks, heat spots, blue discoloration, exceeding the maximum specification in terms of scoring, as well as exceeding the maximum specification in terms of radial runout. Check the brake drum in this condition and measuring its diameter with the tire and wheel assemblies off. If resurfacing is required, apply the Rotor/Drum Flange Resurfacing Kit (J41013) to clean up any corrosion off the brake drum flange, then attach your brake drum to the brake lathe as per the instructions from the maker, with all vibration dampening attachments being secure. With the lathe running, approach the cutting tool to the brake drum friction surface and witness mark; Moreover if the drum is adequately mounted, then it extends three-quarters or more around the surface. Refinish the drum according to the manufacturer's instructions of the lathe, checking diameter after every cut. In case the drum increases beyond the maximum allowable diameter after refinishing, it can be replaced. In order to produce a non-directional finish, introduce the suggested speed setting alongside 120 grit aluminum oxide sandpaper in case you are supplied with a non-directional finishing tool or 150 grit aluminum oxide sandpaper along with a sanding block in the event you are not, respectively. Once you apply the finish, clean the friction surfaces with denatured alcohol or a similar brake cleaner. Finally, extract the brake drum from the lathe and, when needed, clean the wheel bearing flange of any corrosion with the help of the Hub Cleaning Kit (J 42450-A) for reduced lateral runout and brake system pulsation.
• Drum
  25806004
  Q: How to replace the brake drum on Chevrolet HHR?

  A:

  To replace the Brake Drum, first, make sure that the park brake is fully released, then lift the vehicle and support it. Take off the tire and wheel assembly, and then the Brake Drum. If the Brake Drum is to be refitted, so that any rust or corrosion is removed from the hub/flange mating face on the Brake Drum, and if required, carefully remove any corrosion from the periphery of the drum braking face to facilitate its fitting. The flange of the wheel hub is your next task which has to be cleaned using the (J 42450-A). The protective coating from the drum's friction surface must be removed if installing a new Brake Drum using a denatured alcohol or an equivalent approved brake cleaner and a clean shop towel. Adjust the drum brakes, put then the Brake Drum and tire and wheel assembly. Finally, hit the brakes about three times to seat and center Brake Shoes inside the drum prior to lowering vehicle.