Altima 2.5 SL L4-2.5L (QR25DE) (2002)
Remove the quick connector as follows:
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Hold the sides of the connector, push in tubs and pull out the tube.
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If the connector and the tube are stuck together, push and pull several times until they start to move. Then disconnect them by pulling.
CAUTION:
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The tube can be removed when the tabs are completely depressed. Do not twist it more than necessary.
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Do not use any tools to remove the quick connector.
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Keep the resin tube away from heat. Be especially careful when welding near the tube.
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Prevent acid liquid such as battery electrolyte, etc. from getting on the resin tube.
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Do not bend or twist the tube during installation and removal.
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Only when the tube is replaced, remove the remaining retainer on the tube or fuel pump assembly.
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When the tube or fuel pump assembly is replaced, also replace the retainer with a new one (green colored retainer).
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To keep the connecting portion clean and to avoid damage and foreign materials, cover them completely with plastic bags or something
similar.
6. Using a lock ring wrench, remove the lock ring.