Fluid Pressure - Mazda MX-5 1990 Workshop Manual

ENGINE SPEED SENSING POWER STEERING
N
9MUONX-010
THERMOMETER
[50
0
-eO°c (122-140°F)]
GAUGE
~
VALVE FULLY
U
CLOSED
05UONX-028
THERMOMETER
VALVE FULLY
OPEN
05UONX-029
Fluid pressure
1. Assemble the SST as shown in the figure.
Tightening torque:
39-49 N·m (4.0-5.0 m-kg, 29-36 ft.lb)
Note
• Before disconnecting the hose, make marks at the
connections for proper reinstallation.
2. Disconnect the high-pressure hose from the oil pump. At-
tach the SST.
3.
Bleed the air from the system. (Refer to page
N-15.)
4. Open the gauge valve fully. Start the engine and turn the
steering wheel fully left and right to raise the fluid tempera-
ture to
50-60
o
e
.(122-140°F).
Caution
• If the valve is left closed for more than 15 seconds,
the fluid temperature
will
increase excessively and
adversely affect the oil pump.
5.
Close the gauge valve completely. Increase the engine
speed to
1,000-1,500
rpm and measure the fluid pres-
sure generated by the oil pump. If the pressure is not with-
in specification, replace the oil pump assembly.
Oil pump fluid pressure: 7,603-8,339 kPa
(77.5-85.0 kg/cm
2
,
1,102-1,209 psi)
6. Open the gauge valve fully and increase the engine speed
to
1,000-1,500 rpm.
N-17