V70 L5-2.5L Turbo VIN 59 B5254T2 (2004)
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Ignition off.
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Start draining unit.
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Turn pressure gauge cock to mid-position.
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Lock adapter (valve closed as in illustration 1).
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Disconnect adapter from valve.
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Stop draining unit.
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Reinstall equipment.
Caution! Remember to reinstall valve safety cap.