O - other possible causes
I - most probable cause
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problem |
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Causes |
Brakes glow during stop |
Brakes chatter (rough-ness) |
Brakes squeak during ap-plication |
Scraping noise from brakes |
Uneven braking action (front to rear) |
Uneven braking action (pulls to side |
Brakes drag |
Brakes slow to release |
Brakes slow to respond |
Excessive braking action |
Excessive brake pedal effort |
Pedal travel gradually increases |
Excessive brake pedal travel |
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Leaking brake line or connection |
I |
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O |
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I |
O |
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Leaking wheel cyl. or piston seal |
O |
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O |
O |
I |
O |
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Leaking master cylinder |
O |
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I |
O |
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Restricted brake fluid passage |
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O |
O |
O |
O |
O |
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O |
O |
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Air in brake system |
I |
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O |
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I |
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Contaminated or improper brake fluid |
O |
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O |
O |
O |
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Bad metering valve (disc only) |
O |
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O |
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O |
O |
O |
O |
O |
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O |
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Wheel cyl. or caliper piston stuck |
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O |
O |
O |
O |
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O |
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Misadjusted master cyl. push rod |
O |
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I |
O |
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O |
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Leaking vacuum system |
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O |
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I |
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Restricted air passage in power unit |
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O |
I |
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O |
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Improperly assembled power unit |
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I |
O |
O |
O |
O |
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Damaged power unit |
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O |
O |
O |
O |
O |
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Brake attachments missing/loose |
|
O |
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O |
O |
O |
O |
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O |
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Brake pedal linkage binding |
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I |
I |
O |
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O |
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Worn out brake lining |
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O |
O |
O |
O |
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O |
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Uneven brake lining wear |
O |
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O |
O |
O |
O |
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O |
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Glazed brake lining |
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O |
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O |
O |
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O |
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I |
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Incorrect lining material |
|
O |
I |
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O |
O |
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O |
O |
O |
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Contaminated brake lining |
|
O |
O |
O |
I |
I |
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O |
I |
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Linings damaged by abusive use |
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O |
O |
O |
O |
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I |
O |
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Excessive brake lining dust |
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O |
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I |
I |
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I |
O |
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Drums or rotors warped or scored |
|
I |
O |
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O |
O |
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O |
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Out-of -round brake drums |
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I |
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Out-of-parallel brake rotors |
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I |
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Excessive rotor run-out |
|
O |
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Faulty automatic adjusters |
O |
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O |
O |
O |
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I |
O |
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Weak brake shoe return springs |
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O |
I |
O |
O |
I |
O |
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O |
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Drums tapered or threaded |
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I |
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Incorrect wheel cylinder size |
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O |
O |
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O |
O |
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misadjusted or stuck parking brake |
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O |
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Incorrect front end alignment |
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I |
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Incorrect tire pressure |
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O |
O |
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Loose front suspension attachments |
|
O |
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I |
|
O |
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Out-of-balance wheel assemblies |
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I |
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Driver riding brake pedal |
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O |
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O |
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O |
O |
O |
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Faulty proportioning valve |
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O |
O |
O |
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O |
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Insufficient brake shoe pad lubricant |
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I |
I |
O |
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O |
O |
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