Cadillac 60 Series 1963 Shop Manual page 190

BRAKES
;-25
DIAGNOSIS CHART (CONTD.)
CONDITION
Car pulls to one side when
brakes are applied. (Cont'd.)
Brakes drag at all wheels.
Springy pedal action.
Too light pedal pressure (brake
action severe).
Squeaking during application or
release.
Brake squeal or squeak during
stop.
CAUSE
Scored brake drums.
Drums have different friction
between left and right sides.
Visual inspection will show ap-
p r e c i a b l e d i f f e r e n c e in
porosity.
Compensating ports in master
cylinder reservoir not opening.
Brake pedal return travel re-
stricted.
Air in brake system.
Brake shoes improperly ad-
justed.
Improper fit of new lining to
brake drums.
Linings damaged by excessive
heat.
Oil or fluid on linings.
Insufficient lubricant at brake
shoe guide pads.
Lining making poor contact
with drum (excessive edge con-
tact).
Steel washer on " s t a r wheel"
bent, broken, or missing.
Insufficient shoe retention.
CORRECTION
Machine left and right brake
drums or replace both if more
than .030 inch radius has to be
removed.
Machine both drums and sand
linings or replace as required.
Clean or check for full pedal
return. Check vacuum piston
to hydraulic piston push rod
for correct adjustment.
Check for obstruction or bind-
ing.
Bleed system.
Investigate and correct cause
of air being drawn into system.
Correct malfunction of auto-
matic adjusters as required.
Install shoe and lining assem-
blies which are ground to fit.
Follow break-in procedure for
new linings.
Replace shoe and linings.
Replace brake shoe assemblies
or install new linings. Linings
cannot be cleaned and used
again successfully. Correct
leaks.
Apply special heat resistant
lubricant as required.
Check wear pattern. Sand or
file to produce more uniform
contact.
If lining is new, follow break-
in procedure.
Replace steel washer.
Inspect shoe stabilizer plates
for proper installation and
spring tension.