1990 Cadillac Eldorado Brake Service (ONLINE REPAIR MANUALS)

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, ref...

Remove wheels and inspect brake disc, caliper and linings. The wheel bearings should be inspected at this time and repacked if necessary. Do not get any grease on the linings.

Do not replace individual pads or replace pads on one wheel of an axle set alone, as braking performance will be adversely affected.

If a visual inspection does not ade...

COMPOSITE TYPE

Refer toFigs. and when performing the following procedures.

EXCEPT CORVETTE

Disassembly

• Remove master cylinder from vehicle as follows:
• Disconnect and plug hydraulic lines.
• Remove two master cylinder attaching nuts, then the master cylinder.
• Remove reservoir cover and diaphragm. Discard old brake fluid in reservoir.
• Inspect cover and diaphragm. Replace if cut, cracked or deformed.
• Remove fluid level switch, if equipped.
• On models with compact master cylinder, remove proportioner valve assembly,Fig. .
• Depress primary piston and remove lock ring.
• Plug primary fluid ou...

Should it become necessary to remove the caliper for installation of new parts, clean all parts in alcohol, wipe dry using lint free cloths, using an air hose to blow out drilled passages and bores. Check dust boots for punctures or tears. If punctures or tears are evident, new boots should be installed upon reassembly.

Inspect piston bores for scoring or pitting. Bores that show light scratches or corrosion can usually be cleaned with crocus cloth. However, bores that have deep scratches or scoring may be honed, provided the diameter of the...

The anti-lock brake system pump/motor assembly will keep the hydraulic charged to a pressure between approximately 2000-2600 psi, anytime the ignition switch is in the RUN position. The pump/motor assembly cannot run if the ignition switch is off, or if either battery cable is disconnected. Disconnecting the pressure switch connector or the pump/motor connector from the hydraulic unit will also prevent the pump from operating. Unless otherwise specified, the hydraulic accumulator should be depressurized before working on any portion of the hydraulic ...

This caliper, Figs. and , has a single bore and is mounted to the support bracket with two mounting bolts. Hydraulic pressure, created by applying force to the brake pedal, is converted by the caliper into friction. The hydraulic pressure is applied equally against the piston and the bottom of the caliper bore moving the piston outward and the housing inward, resulting in a clamping action on the brake rotor.

Rear ...