![](../../../img/27/AC602852AB00ENG.png)
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1.Install the air hose to
the differential. 2.Connect a pressure gauge to
the air pump discharge outlet nozzle, via the air hose and
T-joint. 3.Apply battery voltage to the air pump
connector.
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![](../../../img/27/AC602853AB00ENG.png)
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4.Measure the time when the
pump starts and stops operating, and if it stops within 5
seconds, the pressure switch inside the pump is
normal. 5.Measure the pressure 10 - 20 seconds
after the pump has stopped. Standard value
: 24.5 - 39 kPa (-30 - 0°C),24.5 - 34 kPa (0 -
100°C) 6.If the pressure is within
the standard value, the release valve inside the pump is
normal. 7.Check the pump does not begin operating
for 5 minutes after it has stopped. 8. If the
inspection for steps 4-7 is normal, the pump is fully
operational.
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