9-9
Trouble symptom
5. Brake squeaks
(continue)
6. Brake rapping
Â
Lining poor contact with drum.
Â
Anti-rattle spring poorly installed.
Â
Drum sliding surface roughened.
Â
Drum eccentric or excessively distort-
ed.
Â
Lining surface roughened.
Â
Repair by polishing or replace.
Â
Replace.
Â
Repair by polishing or replace.
Â
Repair or replace.
Â
Repair or replace.
P
P
robable cause
Remedy
7. Large pedal stroke
8. Pedal dragging.
Â
Brake out of adjustment.
Â
Hydraulic line sucking air.
Â
Oil leaks from hydraulic line, or lack
of oil.
Â
Lining worn.
Â
Shoe tilting or does not return compl-
etely.
Â
Lining in poor contact with brake
drum.
Â
Twisted push rod caused by improp-
erly fitted brake valve.
Â
Brake valve seal faulty.
Â
Flow control valve orifice clogged.
Â
Adjust.
Â
Bleed air.
Â
Check and repair or add oil.
Â
Replace.
Â
Repair.
Â
Repair.
Â
Adjust.
Â
Replace.
Â
Clean or replace.