Mazda MX-5 1990 Workshop Manual page 443

N
N-18
ENGINE SPEED SENSING POWER STEERING
05UONX-030
05UONX-032
05UONX-033
Caution
• If the steering wheel is kept in the fully turned po-
sition for more than
15
seconds, the fluid tempera-
ture will rise excessively and adversely affect the
oil pump.
7. Turn the steering wheel fully to the left and right and meas-
ure the fluid pressure generated by the gear housing. If the
pressure is not within specification, replace the gear hous-
ing assembly.
Gear housing fluid pressure: 7,603-8,339 kPa
(77.5-85.0 kg/cm2, 1,102-1,209 psi)
8, Remove the gauge set. Install and tighten the high-pressure
hose to the specified torque.
Tightening torque:
31-47 N·m (3.2-4.8 m-kg, 23-35 ft-Ib)
9, Bleed the air from the system. (Refer to page N-15.)
STEERING WHEEL AND COLUMN
Caution
• Obtain the code number and deactivate the audio
anti-theft system before disconnecting the battery.
(Refer to page T
-113.)
On-vehicle Inspection
Steering wheel effort
1. With the vehicle on
~
hard, level surface, put the wheels
in the straight-ahead position,
2. Start the engine and warm the power steering fluid to
50-60°C (122-1400F).
3. With the engine running at idle, attach a pull scale to the
outermost point of the steering wheel spoke.
Then, starting with the wheels in the straight-ahead posi-
tion, measure the effort required to turn the steering wheel
to the left and to the right.
Steering wheel effort:
23.5-35.3
N
(2.4-3.6
kg,
5.3-8.0
Ib)
[during one turn of the steering wheel]
4. If not within specification, check the following: fluid level,
air in system, fluid leakage at hose or connections, func-
tion of oil pump and gear box, and tire pressure.