Advertisement
(255)
BRAKES
SERVICE-ADJUSTMENTS
8-1
1
SECTION 8-C
BRAKE SERVICE AND ADJUSTMENT PROCEDURES
CONTENTS OF SECTION 8-C
Paragraph
Sublect
Page
8-8
Fillin g
B
ra ke M
as t er
Cylinder
..
.
8-11
8-9
Bleeding Brake Hydraulic System
8-11
8-10 Flushing
Brake
Hydraulic System 8-12
8-11 Brake P
ed al
Adjustment
"
8-13
8-12 Minor
Brake
Adjustment
8-13
Paragraph
Subject
Page
8-13 Parking B
rake
Adjustment
8-14
8-14
Lubrication
of P
arking
Brake
Cables
8-14
8-15 M
ajor Brake Adjustment
8-1
4
SERVICE BULLETIN REFERENCE
Bulletin No.
Page
No.
SUBJECT
!>
....
8-8 FILLING BRAKE MASTER CYLINDER
The fluid
level
must be maintained at 1;2" to
1" below top of
master cylinder
filler opening
at all times.
Low
fluid level in master cylinder
reservoir
may permit air to be pumped into the
brake
pipes and wheel
cylinders,
necessitating
bleeding of the
hydraulic
system.
Before removing filler cap nut to check fluid
level or add fluid, thoroughly clean the cap and
surrounding area of cylinder to avoid getting
dirt into
reservoir.
It is recommended that
Master Cylinder Filler J 713 and Adapter J
713-2 be used when filling master cylinder res-
ervoir. This tool automatically fills the reser-
voir to
proper level,
and it also prevents dirt
getting into the fluid container wh
en
not in use.
See figure 8-6.
Use only Delco or G.M. Super No
.9 Hydrau-
lic
Brake Fluid in the
hydraulic brake
sys tem .
Shock absorber fluid, or other fluids containing
even a trace of mineral oil, will cause swelling
and
distor t ion of the rubber parts in the hy-
draulic system.
Do not
use
reclaime d
fluid.
Super No. 9
Hydraulic Brake
Fluid is an all
-
weather fluid which will operate satisfactorily
in
temperatures of 300
0
F
.
abo
ve zero to 50° F.
below
zero;
therefore,
it need not be changed
seasonally.
It has no detrimental effect on rub-
ber or metal, and will not gum the cylinders or
pistons even under extreme heat. It will mix
satisfactorily when new fluid is added to fluid
in the hydraulic .system.
-
f
iLLER
J
7
13
Figure
8-6-Master Cylinder
Filler J 7
13
8-9 BLEEDING BRAKE HYDRAULIC
SYSTEM
A
bleeding
operation is
necessary
to
r
emove
air
whenever
it is
introduced
into the hydraulic
brake
system. Since
air is compr essible and
hydraulic fluid
is not, the
pressure
of air in the
system
is indicated
by
a springy,
spongy
feel
-
ing on the brake pedal accompanied by poor
braking action.
Advertisement
