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JamesH, Auto Service Tech
Category: Cadillac
Satisfied Customers: 663
Experience:  Auto Service Tech Hands On Cadillac Experience
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93 cadillac seville: want to replace front brakes..calipers..rotors

Customer Question

want to replace front brakes on 93 cadillac seville. what tools do I need to remove the calipers? what tools do i need to remove the rotors?
Submitted: 8 years ago.
Category: Cadillac
Expert:  JamesH replied 8 years ago.
I have attached the exact steps to perform these steps if you have any questions about any of these please let me know. Thanks

Fig. 1 Delco-Moraine 3200 Series Caliper Exploded View.

Fig. 2 Delco-Moraine 3200 Series Caliper Exploded View.

Fig. 3 Delco-Moraine 3200 Series Caliper Exploded View.

Fig. 4 Generation II Delco-Moraine 3257 & 3264 Series Caliper

  1. Remove caliper assembly as outline above.
  2. Remove shoe and lining assemblies from caliper, Figs. 1 through 3, noting the following:
    1. On models with tab mount outer shoe (all except series 3264), straighten bent over shoe tabs with suitable pliers.
    2. On models with spring mount outer shoe (series 3264), insert screwdriver between shoe and caliper and disengage buttons on shoe from holes in caliper.
  1. Remove sleeves and bushings from grooves in caliper mounting bolt holes, Figs. 1 through 4.

Fig. 9 Installing Retainer Spring On Inboard Shoe

Fig. 10 Positioning Screwdriver Between Outboard Shoe Flange & Hat Section Of Rotor

Fig. 11 Positioning Hammer To Clinch Brake Pad Tabs

  1. Lubricate new bushings with suitable grease, install bushings in caliper grooves, then insert sleeves through bushings.
  2. Install retaining spring onto inboard shoe and lining assembly, Fig. 9, if equipped, then install inboard shoe into caliper housing.
  3. Install outboard shoe and lining assembly into caliper housing ensuring wear sensor is properly positioned. On models with spring mount shoe (series 3264), ensure buttons on shoe are properly engaged in holes in caliper.
  4. Install caliper assembly as outlined.
  5. On models with tab mount outer shoe (except series 3264), clinch outboard shoe to brake caliper as follows:
    1. Apply brakes several times to ensure caliper piston is extended and shoes are fully seated.
    2. Wedge a large flat blade screwdriver between outboard shoe flange and hat section of rotor, Fig. 10.
    3. Hold outer pad against caliper with suitable clamp or by applying moderate pressure on brake pedal.
    4. Position a ball peen hammer on outboard shoe tab, Fig. 11, then using a larger brass hammer, lightly tap the ball peen hammer to bend the outboard shoe tab. Tabs must be bent around casting to approximately 45°.
    5. After both tabs have been bent pressure should be released and outboard shoe should be locked into position. If shoe is loose, repeat steps a. through d. If an outboard shoe is removed from the caliper, or the tabs unclinched for any reason, then it will be necessary to replace the shoe and lining assemblies. Do not re-clinch outboard shoe locking tabs after having removed shoe from caliper.


Checking Rotor For Lateral Runout

Checking Rotor Lateral Runout

Servicing of disc brakes is extremely critical due to the close tolerances required in machining the brake disc to insure proper brake operation.
The maintenance of these close controls of the shape of the rubbing surfaces is necessary to prevent brake roughness. In addition, the surface finish must be non-directional and maintained at a micro inch finish. This close control of the rubbing surface finish is necessary to avoid pulls and erratic performance, and to promote long lining life and equal lining wear of both left and right brakes.
In light of the foregoing remarks, refinishing of the rubbing surfaces should not be attempted unless precision equipment, capable of measuring in micro inches (millionths of an inch) is available.
To check lateral runout of a disc, mount a dial indicator on a convenient part (steering knuckle, tie rod, disc brake caliper housing) so that the plunger of the dial indicator contacts the disc at a point one inch from the outer edge, Fig. 2. If the total indicated runout exceeds specifications, install a new disc.
To check parallelism (thickness variation), mount dial indicators, Fig. 3, so the plunger contacts rotor approximately 1 inch from outer edge. If parallelism exceeds specifications, replace rotor.



Customer: replied 8 years ago.

my question was what tools do i need? these diagrams are great but no where does it tell me what size wrench (allenwrench maybe??) i need to remove the caliper mounting bolts. or what size wrench or socket to remove rotors. That was my question.


These pictures are great but you did not answer my question.


I am not accepting this answer.

Expert:  JamesH replied 8 years ago.
You will need a c-clamp to push the piston back in so that you can put the new break pads. I dont have exact sizes but you will need a metric socket set in order to take off the caliper from the rotor once you remove the two bolts the caliper comes off. Then you can remove the rotor I believe this year may have a allen wrench head that holds the rotor you will be able to see this with the tire off it may just come off but if there is a allen head thats in the center area then you will have to remove this.
Customer: replied 8 years ago.
i need to buy the tools. you have not answered my questions. thanks any ways.
Expert:  JamesH replied 8 years ago.
Customer: replied 8 years ago.
i am not paying for this.