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r
BRAKES
PRESSURE
TESTING
VARI
OUS TESTS
RESIDUAL PRESSURE
IN SYSTEM 504 with
rear
drum brakes.
- Block the master-cylinder inlet (plug FI.
- Connect the Testarc
50
gauge to a rear bleed hole.
- Remove plug
F.
- After an application of the brake pedal. the pressure
11
I e rear circ Jit should be stable at
7 to 27
p.s.i.
(0,5
to
1,9
bars)
(gauge d).
Given that the system
is
leak proof. (tests
I
and
11)
if the pressures obtained
are
not w1th1n the spec1
fied I mits, then exchange the lJnion
(1)
inside which
1s
a
v
lve.
CALIPER
MOVEMENT
- Connect
pressure gauge
(A)
to
a
bleed
hole.
-
Replace
the
outer
pad with a used pad
(2).
I
- Gently operate the brake pedal.
I
- Th
calipers should
operate
at
pressures below
front caliper
•
43 p.s.1. (3 kg/crnl ).
re:ir
caliper
•
64
p.s.1.
(4,5 kg/crnl)
- ff this cond1t1ons are not met, dismantle body and
pistons, clean
with
meths. Ro·ossemble and re· test.
- Replace the or1g1nal pad.
BRAKE PRESSURE WARNING LIGHT
(504
U.S.A.)
- Sia k off handbrake.
- Mal.e contact.
- Depress brake pedal.
- Open a bleed scr:w
-
The
warning light
(3)
shoulrJ light·UJJ.
- Clo:>e
bleed
screw.
IMPORTANT
-
After these
tests check travel of brake
pedal 'lnd bleed, if necessary
•
.
..
'.
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