Hino 600, Руководство по ремонту, Страница: 232 / 451

BRAKE EQUIPMENT (MODELS WITH HYDRAULIC BRAKE) BR01–6
Brake drags or does not release Improper return of master cylinder pis-
ton Replace master cylinder assembly.
Clogging of brake system Replace the pipe, hose, etc.
Constricted master cylinder reservoir
vent Clean vent passage in reservoir cap.
Self applied booster (fluid flow too
high) Repair or replace power steering
pump.
Soft or swollen master cylinder seals
due to brake fluid contamination Flush out old brake fluid then replace
master cylinder and add new brake
fluid.
Clogging compensating valve of mas-
ter cylinder Replace master cylinder assembly.
Improper return of brake pedal Repair or replace.
Improper return of brake booster piston Replace booster assembly.
Improper installation pad Check the installed condition of the
pad. Repair.
Improper return of caliper piston Repair or replace.
Not enough braking, or too much
pedal resistance (Wheel brake and
rotor) Pad is wet with grease or fluid Replace the pad.
Improper contact of rotor and pad Correct.
Improper pad material or glazed pad Correct.
Deformation or hardening of rotor Correct or replace.
Excessively worn pad Replace.
Glazed rotor Correct.
Not enough braking, or too much
pedal resistance (Control system
pipings) Leakage of brake fluid from brake sys-
tem Tighten further or replace gasket.
Not enough braking, or too much
pedal resistance (Lack of power
steering pump pressure) Improper operation of power steering
pump Repair or replace.
Clogging of brake system Replace pipe, hose, etc.
Not enough braking, or too much
pedal resistance (Not enough power
steering pump pressure or rise of
power steering pump pressure) Check the pipe joints for tightness Repair.
There is a rupture or twist in the pipe
leading to the power steering pump Replace.
The hose is ruptured or collapsed Replace.
Power steering pump relief valve set-
ting too low Replace power steering pump.
Fluid contamination Drain, flush and refill system, replace
booster or master cylinder as appropri-
ate and power steering reservoir filter
as necessary.
Not enough braking, or too much
pedal resistance Lack of brake fluid Supply brake fluid periodically.
Improper power steering pump Replace.
Stuck piston in the master cylinder Replace master cylinder assembly.
Insufficient power steering fluid Refill to proper level.
Air trapped in the power steering fluid
or brake fluid Search the cause, refill the fluid and
bleed air.
Binding brake pedal linkage Overhaul and lubricate.
Worn or damaged brake booster Replace booster assembly.
Leakage around the check ball in the
backup pump Replace the backup pump.
Symptom Possible cause Remedy/Prevention