Inspection Of Check Valve - Ford TRADER Workshop Manual

CD
~
®
@
00
SOOmmHg
I
\\~ ~
(19.7
inHg)~~
9TGOPX-044
9TGOPX-Q46
BRAKE SYSTEM
p
2. Start the engine. Depress the brake pedal when the vacu-
um reaches
500 mmHg (19.7 inHg).
If the fluid pressure
is within specification, the unit is operating.
Pedal force Fluid pressure Diameter of unit
196 N (20 kg, 44 Ib)
6,180 kPa
188+215mm
(63.0 kg/cm
2
,
896 psi)
(7.4+8.5 in)
196 N (20 kg, 44 Ib)
6,278 kPa 213+240mm
(64.0 kg/cm
2
,
910 psi) (8.4 + 9.4 in)
Inspection of check valve
1. Disconnect the vacuum hose from the power brake unit.
2. Apply suction and pressure to the hose from the power
brake unit side.
Check that air flows only toward the vacuum pump.
Note
• If the air passes in both directions or not at all, re-
place the check valve along with the hose.
P-17