Plymouth Valiant V-100 1965 Service – Technical Manual page 100

5-2 BRAKES-DIAGNOSIS
Condition Possible Cause Correction
SERVICE BRAKES
(Continued)
DRAGGING
BRAKES
HARD PEDAL
WHEEL LOCKS
BRAKES FADE
(HIGH SPEED)
PEDAL
PULSATES
BRAKE CHATTER
BRAKES DO
NOT SELl
ADJUST
(a) Incorrect wheel or parking brake adjustment.
(b) Parking brakes engaged.
(c) Weak or broken brake shoe return spring.
(d) Brake pedal binding.
(e) Master cylinder cup sticking.
(f) Incorrect master cylinder push rod adjustment.
(9) Obstructed master cylinder compensating port.
(h) Saturated brake lining.
(i) Bent or out of round brake drum.
(a) Incorrect brake lining.
(b) Incorrect brake push rod
(c) Frozen brake pedal linkc
(d) Restricted brake line or
I
(e) Brake power inoperative.
adjustment.
'W*
lose.
ng.
zdiustment.
(a) Loose or torn brake lini
(b) Incorrect wheel bearing
c
,
(c) Wheel cylinder cups sticking.
(d) Contaminated brake lining.
(a) Incorrect lining.
(b) Distorted or out of round brake drums.
(c) Overheated brake drums.
(d) Incorrect brake fluid (low boiling temperature).
(e) Saturated brake lining.
(a) Bent or out of round brake drum.
(b) Loose support plate.
(c) Bent support plate.
(d) Distorted brake shoes.
(e) Machine grooves in the contact face of the
(f) Contaminated brake lining.
brake drum.
F
(a) Adjuster screw frozen in the threads.
(b) Adjuster screw corroded at the thrust washer.
(c) Adjuster lever does not engage star wheel.
PARKING BRAKE
DRAGGING BRAKE
(a) Improper cable or brake shoe adiustment.
(b) Broken brake shoe return spring.
(c) Broken brake shoe retainer spring.
(d) Grease or brake fluid soaked lining.
(e) Sticking or frozen brake cable.
(f) Broken rear spring.
(9) Bent or rusted cable equalizer.
(a) Adjust the brakes and
check
the fluid.
(b) Release the parking brakes.
(c) Replace the brake shoe return spring.
(d) Free up and lubricate the brake pedal and
(e) Recondition the master cylinder.
(f) Properly adjust the master cylinder push rod.
(9) Use compressed air and blow out the compen-
sating port.
(h)
Replace the brake lining.
(i)
Grind or replace the faulty brake drum.
linkage.
(a) Install matched brake lining.
(b) Adjust the brake push rod and check the fluid.
(c) Free up and lubricate the brake linkage.
(d) Clean out or replace the brake line or hose.
(e) Recondition or replace the brake power.
(a) Replace the brake lining.
(b) Clean, pack and adjust the wheel bearing.
(c) Recondition or replace the wheel cylinder.
(d) Reline both front or rears or all four brakes.
(a) Replace lining.
(b) Grind or replace the drums.
(c) Inspect for dragging brakes.
(d) Drain, flush, refill and bleed the hydraulic
(e) Reline both front or rear or all four brakes.
brake system.
(a) Grind or replace the brake drums.
,. .
- .
. . . .
(b)
Tighten support plate bolts.
(c) Replace the support plate.
(d) Replace the brake shoes.
(e) Grind or replace the brake
(f) Replace brake shoes and linin
drum.
(a) Clean and free up all thread
(b) Clean the threads and re
washer
if
necessary.
1-1
r B . . - - : . .
L,,
..^
,-,,,I--,
-A
areas.
'place the thrust
ncpuii, up
icpiubc:
uujuster as required.
(a) Properly adjust service brakes then adjust park-
(b) Replace any broken return spring.
(c) Replace broken retainer spring.
(d)
Replace grease
seal
or recondition wheel cylin-
(e) Clean and lubricate cables.
(f) Replace broken rear spring.
(9) Straighten, or replace and lubricate equalizer.
ing brake cable.
ders and replace both brake shoes.