Opel 1900 1973 Service Manual page 273

1973 OPEL SERVICE MANUAL
C o n d i t i o n
Excessive Pedal Travel
Dragging Brakes (A very
light drag is present in
all disc brakes
immediately after pedal
is released.)
Grabbing or Uneven Braking
Action (All conditions
listed under "Pulls" .)
P o s s i b l e C a u s e
2. Partial system failure.
3. Excessively worn shoe
and lining.
4. Piston in caliper stuck
or sluggish.
5. Fading brakes due to
incorrect lining.
6. Vacuum leak.
1. Partial brake system
failure.
2. Insufficient fluid in
master cylinder.
3. Poor rear brake
adjustment.
4. Air trapped in system.
5. Bent shoe and lining.
1. Master cylinder pistons
not returning correctly.
2. Restricted brake tubes
or hoses.
3. Incorrect parking brake
adjustment on rear brakes.
4. Check valve installed in
outlet to front disc brakes.
brake unit.
C o r r e c t i o n
2. Check front and rear brake system
and repair, if necessary. Also, check
brake warning light, if a failed
system is found and light did not
function.
3. Check and replace in axle sets.
4. Remove caliper and rebuild.
5. Remove and replace with original
equipment lining.
6. Check for ruptured hose or loose
attachment.
1. Check both front and rear system
for a failure and repair. Also, check
warning light - it should have indi-
cated a failure.
2. Fill reservoirs with approved
brake fluid. Check for leaks.
3. Adjust rear brake per
specifications.
4. Bleed system.
5. Replace axle set of shoe and
lining.
1. With reservoir cover off, check
for fluid spurt at bypass holes as
pedal is depressed. Adjust push rod,
if necessary, or rebuild master
cylinder.
2. Check for soft hoses or damaged
tubes and replace with new hoses and
new double-walled steel brake tubing.
3. Check and readjust to correct
specifications.
4. Check master cylinder outlet and
remove check valve if present.
1. Check operation and repair, if
necessary.