Question about 1999 Ford Econoline

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Recently had front & rear brakes replaced along with a new rear axle. Vehicle has 114,000 miles. The brakes shudder slightly with normal braking + some quivering of the steering wheel. With hard braking the front brakes seize, causing the tires to squall, then release, then seize again, then release, etc, etc causing the vehicle to engage in a jerking motion.

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  • mgrimm356 Nov 19, 2009

    Figured that out already but thanks for the reply anyway.

  • Richard Scordino May 11, 2010

    I strongly suggest that you get it back to whoever worked on it now. Whatever is causing your problem is dangerous and should be taken care of immediately!

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  • Master
  • 863 Answers

Its a good idea to turn your rotors if your putting on new pads so that you get a good seat.  The steering wheel vibration may be your new pads wearing in and trying to find a good seat.  Give it another 500 miles for break in period and if you still get the problem, then replace the pads with better ones and check to see if your rotors are not warped.  Your pads will never seat correctly if your rotors are warped and make sure you use plenty of that shim goop they give you in the package before putting on the pads.

Posted on Nov 19, 2009

  • Poppy Chulo
    Poppy Chulo Nov 19, 2009

    One more thing.  Make sure you purge the brake line correctly and put in new brake fluid, since you probably got air or dirt in the system.


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Brake shudder


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Premature rear brakerotor failure


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Since your 'customer' replaced the booster, make sure the plunger rod is set correctly. Perhaps it is not set at the correct length, in which case you will never get a pedal. Diagnosis for this is a pressure tester to see if any pressure is being generated by the calipers.
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What tools needed to replace front brake pads & rotors


Brake Pads
Removal & Installation
Front





3.4L front disc brake assembly
toy_4run_34_frontbrakeassembly.gif








4.0L and 4.7L front disc brake assembly
toy_4run_frontbrakeassembly.gif



To Remove:


  1. Before servicing the vehicle, refer to the precautions in the beginning of
    this section.
  2. Remove or disconnect the following:

    • Front wheel
    • Clip, 2 caliper pins, the anti-rattle spring then remove the 2 brake pads
      and the 4 anti-squeal shims

To Install:

CAUTION
Only replace brake pads on 1 side of the
vehicle at a time. Failure to use this procedure could cause the caliper pistons
on the opposite side of the vehicle to pop out requiring the reconditioning or
replacement of the brake caliper.


  1. Remove a small amount of brake fluid from the master cylinder.
  2. Install a used brake pad into the caliper and compress the caliper pistons.
  3. Apply disc brake grease to both sides of the inner anti-squeal shims.
  4. Install or connect the following:

    • Anti-squeal shims to the new brake pads
      NOTE: When replacing worn pads, the anti-squeal shims must be replaced
      together with the pads.

    • 2 brake pads
    • Anti-rattle spring and the 2 caliper pins
    • Clip
    • Front wheel

  5. Depress the brake pedal several times to seat the brake pads.
  6. Check the brake fluid level and top off as needed.

Rear
To Remove:


  1. Before servicing the vehicle, refer to the precautions in the beginning of
    this section.
  2. Remove or disconnect the following:

    • Rear wheel






      toy_4run_rearcalbolts.gif



    • 2 cylinder slide pins from rear caliper assembly
    • Caliper assembly from rear caliper mounting
    • 2 brake pads with anti-squeal shims from rear caliper mounting
    • 2 anti-squeal shims from each disc brake pads
    • Pad wear indicator plate from the inner side disc brake pad
    • 4 pad support plates from the rear caliper mounting

To Install:


  1. Install or connect the following:

    • 4 pad support plates on the rear caliper mounting
    • Pad wear indicator plate on the inside brake pad
      Note: Install the pad wear indicator facing downward.

    • Anti-squeal shims on each brake pad
    • 2 disc brake pads with anti-squeal shims to the caliper assembly

  2. Apply lithium soap base glycol grease to the sliding part of 2 caliper slide
    pins.
  3. Install or connect the following:

    • Disc brake caliper assembly with 2 caliper slide pins
    • Torque to 65 ft-lbs (88 Nm)
    • Rear wheel

  4. Depress the brake pedal several times to seat the brake pads.
  5. Check the brake fluid level and top off as needed.
--- Removal & Installation
Front
To Remove:


  1. Before servicing the vehicle, refer to the precautions in the beginning of
    this section.
  2. Remove or disconnect the following:

    • Front wheel
    • Front brake caliper assembly

  3. Make matchmarks on the disc and the axle hub.
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To Install:


  1. Align matchmarks and disc onto axle hub.
  2. Install or connect the following:

    • Front brake caliper assembly with the 2 bolts

      1. Torque to 90 ft-lbs (123 Nm)

    • Front wheel

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Shake/Shudder while depressing the brake.


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