Troubleshooting brakes

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If you still have no firmness on the brake pedal then either replace the master cylinder with a known good one or a new one. Some times a re build kit for the Master cylinder is available, so you have options.  Once again i bleed the new master cylinder  before i proceed.  
 
If you still have no firmness on the brake pedal then either replace the master cylinder with a known good one or a new one. Some times a re build kit for the Master cylinder is available, so you have options.  Once again i bleed the new master cylinder  before i proceed.  
  
The second possibility is your helper says the brake pedal is rock hard with no travel, you then remove one clamp and your helper presses the pedal again ,if the pedal remains hard then proceed and remove the next clamp, remove the next clamp and so on .  If removing any of the clamps results in too much brake pedal travel bingo you have discovered the fault area.  If it were the back axle the remove the drums as per Chilton or Haynes manual and carry out reconditioning as per book.  Quite often all that is needed is the dust removing with an aerosol brake cleaner then manually adjusting the brakes. If your vehicle has a brake proportioning valve of any type then make sure you understand its function , maybe do a google search on it.
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The second possibility is your helper says the brake pedal is rock hard with no travel, you then remove one clamp and your helper presses the pedal again ,if the pedal remains hard then proceed and remove the next clamp, remove the next clamp and so on .  If removing any of the clamps results in too much brake pedal travel bingo you have discovered the fault area.  If it were the back axle then remove the drums as per Chilton or Haynes manual and carry out reconditioning as per book.  Quite often all that is needed is the dust removing with an aerosol brake cleaner then manually adjusting the brakes. If your vehicle has a brake proportioning valve of any type then make sure you understand its function , maybe do a google search on it.

Revision as of 12:30, 20 May 2009

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