Basic brake drum cleaning and adjusting on a 2006 gmc sierra. Once youve found the porthole remove the rubber plug and insert the end of a brake spoon adjustment tool or a flathead screwdriver into this hole.
Inspect the back of the backing plates behind the drums for brake adjustment portholes.
How to adjust drum brakes on a truck.
During the service pull a drum off.
How to adjust truck brakes step 1.
Make sure the vehicle is in park and that the parking brake is set.
Chock the front wheels.
How to adjust drum brakes.
Raise the rear of the vehicle and support it with jack stands.
With the vehicle lifted safely and secured it is time to remove the tires.
Place the truck in neutral and lift it on a lift.
Remove the tire.
We recommend removing the wheels.
If necessary use a flashlight or drop light.
Lift the rear end of the vehicle.
Adjusting slack adjusters on big truck.
Locate the star.
Prepare to adjust the drum brakes step 1.
Park on a flat and level surface not your driveway.
Adjust your brakes on semi truck.
Sometimes the drums are either stuck to the rear hub from rust.
Even though removing the wheels is not required.
On the inside surface of your wheels backing plate about 3 inches down from the top of the plate youll find the porthole.
Locate the oblong access hole thats covered by.
Part 1 of 3.
This should be performed at least once a year or its good to do when its time to rotate the tires.
How to determine air brake adjustmentappliedpry barmark measure duration.
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