Ezgo WorkHorse ST 480, Руководство по ремонту и обслуживанию техника

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BRAKES
Page D-10
Repair and Service Manual
Read all of Section B and this section before attempting any procedure. Pay particular attention to all Notes, Cautions and Warnings
10). Clean each fitting before opening to prevent contam-
inating the system.
Fill master cylinder reservoir to within 1/4" (6 mm) of top
with new brake fluid before starting and after bleeding is
completed.
Check the master cylinder fluid level frequently during
bleeding and keep the reservoirs at least one-half full.
The following steps apply to one bleeder screw and
should be repeated at both bleeder points.
1. Attach a bleeder hose to the bleeder screw. Place the
other end of the hose in a glass jar partially filled with
brake fluid.
Be sure that the free end of the hose is sub-
merged in brake fluid. This helps to show up air
bubbles as they come out of the system, and prevents air from
being accidentally sucked into the system through the bleeder
screw.
2. Apply moderate (40 - 50 lbs. [18 - 23 kg]), steady pres-
sure on the brake pedal, and open the bleeder screw.
Do not force brake pedal to
floor. The operating rod jam nut
could be forced into master cylinder where it could
damage internal components.
3. If the brake pedal goes to the floorboard without
removing all of the air bubbles, close the bleeder screw
and release the brake pedal slowly. Then repeat Steps 2
and 3.
The bleeder valve at the wheel cylinder must
be closed at the end of each stroke and before
the brake pedal is released to insure that air cannot enter the
system. It is also important that the brake pedal be returned to
full ‘up’ position.
4. When fluid coming from the submerged end of the
hose is clear and free of bubbles, close the bleeder
screw and release the brake pedal. Tighten bleeder
screw to a maximum torque of 38 in. lbs. (4.3 Nm).
Flushing
The process of removing old brake fluid to rid the system
of water, mineral oil or other contaminants is called flush-
ing the hydraulic system.
The flushing procedure is the same as bleeding except
that a greater quantity of brake fluid is discharged from
each bleeder point to be sure that all of the dirty or con-
taminated fluid is removed.
BRAKE PEDAL REMOVAL AND
INSTALLATION
Tool List Qty. Required
Needle nose pliers....................................................... 1
Straight blade screwdriver ........................................... 1
Socket, 9/16", 3/8" drive .............................................. 1
Ratchet, 3/8" drive ....................................................... 1
Wrench, 3/4" ................................................................ 1
Torque wrench, 3/8" drive, ft. lbs. ................................ 1
Disconnect the linkage rod from the brake pedal by
removing the cotter pin and the clevis pin. Unhook the
torsion spring by inserting a thin blade screwdriver
between the small hook and the bracket. Move the hook
back and to the side to release the torsion spring (Ref
Fig. 8 on page D-11).
Remove the lock nut, the shoulder bolt and remove the
brake pedal.
Fig. 7 Bleeder Valve
Bleeder Hose
Bleeder
Valve