Chevrolet Citation/Omega/Phoenix/Skylark 1980-1985 Repair Guide

Master Cylinder

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FLUID RECOMMENDATION & LEVEL CHECK





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Fig. Fig. 1 Use thumb pressure to remove the brake master cylinder cover



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Fig. Fig. 2 Brake fluid level should be about 1/4 in. below the edge of the reservoir



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Fig. Fig. 3 If brake fluid is needed, clean the master cylinder lid, then remove the lid from the reservoir



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Fig. Fig. 4 When removing the lid, be sure not to damage the master cylinder lid diaphragm



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Fig. Fig. 5 Be sure to add only fresh brake fluid from a clean, sealed container

Once a month, the fluid level in the brake master cylinder should be checked.

  1. Park the car on a level surface.
  2.  
  3. Clean off the master cylinder cover before removal.
  4.  
  5. The cover simply snaps onto the master cylinder body. Use your thumbs to press up on the two tabs on the side of the cover to unsnap it. Remove the cover, being careful not to drop or tear the rubber diaphragm underneath. Be careful also not to drip any brake fluid on painted surfaces; the stuff eats paint.
  6.  

Brake fluid absorbs moisture from the air, which reduces effectiveness, and will corrode brake parts once in the system. Never leave the master cylinder or the brake fluid container uncovered for any longer than necessary.

  1. The fluid level should be about 1 / 4 inch below the lip of the master cylinder well.
  2.  
  3. If fluid addition is necessary, use only extra heavy duty disc brake fluid meeting DOT 3 specifications. The fluid should be reasonably fresh because brake fluid deteriorates with age.
  4.  
  5. Replace the cover, making sure that the diaphragm is correctly seated.
  6.  

If the brake fluid level is constantly low, the system should be checked for leaks. However, it is normal for the fluid level to fall gradually as the disc brake pads wear; expect the fluid level to drop not more than 1 / 8 inch for every 10,000 miles of wear.

 
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