Air Discharging Of The Power Steering System; Oil Pressure Checking - Lifan 620 Maintenance Manual

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(4) Connect the return hose, and fix with clip.
(5) Fill the reservoir with the specified oil, neither higher than the maximum level, nor lower than
the minimum level.
Oil: ESSOATF.D. Filling amount for reference: 0.825L.
(6) With idle operation of the engine, repeatedly turn the steering wheel from lock to lock, to
discharge the air for the steering system.
(7) Check the oil level again. Fill the reservoir with the specified oil if necessary, in order to make
the oil reach the maximum level.

6. Air discharging of the power steering system

(1) Raise the front wheel by a jack.
(2) Intermittently start the engine for several times, and meanwhile turn the steering wheel from
lock to lock for 5 to 8 times to raise the oil temperature, and then make the steering wheel in the
straight ahead position and note the fluid level in the reservoir.
(3) Note the fluid level in the reservoir again in 3 to 5 minutes later after the engine misfires, and
compare the level with that in (2). If the gap is below 5mm and there is no bubble or emulsification
in the fluid, the air inside the system has been discharged completely. Otherwise, repeat step (4)
and step (5) until the air is discharged completely.
(4) Check the fluid level. Fill the fluid reservoir with oil to the regulated level as necessary.
Note:
① During discharging air, the fluid should be higher than the minimum level of the reservoir.
Otherwise, fill more fluid.
② The air will be micronized and dissolved in the fluid if it is discharged with the engine on.
Therefore, discharge the air while starting the engine.
③ The fast increasing fluid level after the engine stops indicates an incomplete air discharging.
④ An incomplete air discharging in the system will cause a vibration noise from the pump and
abnormal sound from the flow control valve which may affect the service life of the pump and other
components.
7. Oil pressure checking (see Fig. 2-37)
Fig.2-37
(1) Disconnect the oil pump from the high pressure hose, and install the special tool.
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