1987-Montero · Brakes a · страница 14 из 41 · Открыть оригинал PDF ↗
Test 4 - Non-boosting Function Test
(1) Stop the engine.
(2) Confirm that the vacuum gauge indicates 0 kPa (0 mmHg).
(3) Check to be sure that the brake fluid pressure is the
standard value when the brake pedal is depressed at a foot
force of IOON (22 Ibs.) and 300N (66 Ibs.)
Standard value :
At 100 N (22 Ibs.) foot- force
0.2 MPa (28 psi)
At 300 N (66 Ibs.) foot force
0.4 MPa (57 psi)
(4) If the output.fluid pressure agrees with the standard value
the brake booster is functioning properly.
BLEND PROPORTIONING VALVE FUNCTION TEST
N05FKAB
1. Connect two pressure gauges, one each, to the input side
and output side of blend proportioning valve. Bleed the
system.
2. Gradually depress the brake pedal and check to be sure
that the fluid pressure at.the output side is the standard
value when the fluid pressure at the input side is 6.0 MPa
(853 psi) and 9.0 MPa (1,280 psi).
‘.
1:
k:
-‘.
.+
. I
Standard value :
At 6.0 MPa (853 psi)
3.325-3.725 MPa
(472.9-529.8 psi)
At 9.0 MPa (1,280 psi)
4.725-5.325 MPa
(672.0-757.4 psi)
_ .
_-
3. If the measured pressures are not within the permissible
ranges, replace the blend proportioning valve.
Caution
r Do not disassemble the B.P.V. since its performance
depends on preset load of the spring.
BLEEDING
N05FYE.a
The brake hydraulic system should be bled whenever the
brake tube, brake hose, master cylinder or wheel cylinder has
been removed or whenever the brake pedal feels spongy
when depressed. Bleed the brake system in the sequence
shown in the illustration.
Specified brake fluid : DOT 3
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