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1987 Mazda Truck Pedal dropping

Tiny
DRIPDOC
  • MEMBER
  • 1987 MAZDA TRUCK
  • 4 CYL
  • 2WD
  • MANUAL
  • 87,000 MILES
Someone else wrote in with the same Question, but I have done all that you suggested and still have the same prob. I have replaced all brake lines, shoes, pads, master cylinder. I performed the test the book mentions and still the pedal will travel almost to the floor on the first step I still have brakes at the floor but doesn't seem right. Comes up on second step and I did get some more pedal after adjusting the rear shoes. Could it be the metering valve on the firewall, or is this common for this model?
HELP dripdoc@neo. Rr. Com :x
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Tuesday, February 26th, 2008 AT 6:43 AM

1 Reply

Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,749 POSTS
Sounds like you covered the basics. Now here are some things also that can cause your problem. If a wheel bearing is loose it can cause the rotor to push back the piston of the caliper. Also make sure calipers move freely.
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Tuesday, February 26th, 2008 AT 7:24 AM

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