Question about 1988 Chevrolet K2500
Had uneven and sticking (right) brakes on my 88 Chevy K2500. When disassemblying the shoes are postioned different on the right side then on the left side; on the left the short shoe is mounted towards the front and on the right side the short shoe is mounted towards the rear of the vehicle. put on new shoes, cylinders, springs and had the drums refurbished but problem remains.
Short shoe goes towards front. Also: check for any contamination on shoes or hardware from either axle seal or wheel cyls. Any contamination will make vehicle pull when brake applied. Technically, if contaminated shoes need replacement but if not heavy, on new shoes I usually just give a light sanding on friction material and the remainder will usually burn off.
Posted on Feb 12, 2009
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REMOVAL & INSTALLATION
It is a good idea to only disassemble and assemble one side at a time, leaving the other side intact as a reference.
The drum brakes are self-adjusting and require a manual adjustment only after the brake shoes have been replaced, or when the length of the adjusting screw has been changed while performing some other service operation.
Fig. Fig. 2: When using a brake adjustment gauge, first measure the inside diameter of the drum (top) and then adjust the brakes shoes to the proper outside diameter (bottom)
Fig. Fig. 3: Measure brake shoe thickness in several places around the shoe
Inspect the brake shoes for wear using a ruler or Vernier caliper. Compare measurements to the brake specifications chart. If the lining is thinner than specification or there is evidence of the lining being contaminated by brake fluid or oil, replace all brake pad assemblies (a complete axle set).
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