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Emission System: Removal & Installation Mazda MX-5 NC

Auxiliary Emission Control Systems 13 illustrations ~1138 words

ROLLOVER VALVE REMOVAL/INSTALLATION [LF]

Note. The rollover valve cannot be removed as it is built into the fuel tank.

FUEL SHUT-OFF VALVE REMOVAL/INSTALLATION [LF]

Note. The fuel shut-off valve cannot be removed as it is built into the fuel tank.

Type A Removal

CAUTIONThe quick release connector may be damaged if the release tab is bent excessively. Do not expand the release tab over the stopper.

Note. The evaporative hose can be removed by pushing it to the joint port side to release the lock.

Scheme 24

Scheme 24
Scheme 24

Scheme 25

Scheme 25
Scheme 25

Scheme 26

Scheme 26
Scheme 26
  1. Rotate the release tab on the quick release connector to the stopper position. NOTE: The retainer is attached to the pipe even after the connector is disconnected.
  2. Pull out the evaporative hose straight from the joint port and disconnect it.
  3. Cover the disconnected quick release connector and joint port with vinyl sheeting or a similar material to prevent it from scratches or dirt.

Scheme 27

Scheme 27: Type B Removal
Scheme 27: Type B Removal
  1. Squeeze the release tab until the locks are released. NOTE: The retainer has two internal locking tabs which retain the joint port. Be sure that the squeezing place on the retainer is squeezed until it can be released from the joint port.
  2. Pull the quick release connector straight outward. NOTE: The retainer is attached to the pipe even after the connector is disconnected.
  3. Cover the disconnected quick release connector and joint port with vinyl sheeting or a similar material to prevent it from becoming scratched or dirty.

Type C Removal

CAUTIONBe careful not to damage the pipe when unlocking the retainer.

Note. If the quick release connector is removed, replace the retainer with a new one.

Scheme 28

Scheme 28
Scheme 28

Scheme 29

Scheme 29
Scheme 29
  1. Follow "BEFORE SERVICE PRECAUTION" and remove dirt from the connecting surfaces before performing any work operations. NOTE: The retainer is attached to the pipe even after the connector is disconnected.
  2. Set the SST parallel to the quick release connector. NOTE: The quick release connector can be removed by pushing the center of the retainer tabs.
  3. Hold the center of the retainer tabs with the SST ends and press the retainer.
  4. Pull the connector side and disconnect the quick release connector.
  5. Raise a retainer tab using the SST and remove the retainer.
  6. Cover the disconnected quick release connector and joint port with vinyl sheeting or a similar material to prevent it from becoming scratched or dirty.

Type D Removal

CAUTIONWhen releasing the retainer locks, take extreme care not to damage the evaporative hose.

Scheme 30

Scheme 30
Scheme 30
  1. Release the locks between the retainer and joint port by pressing each retainer lock one by one using a flathead screwdriver or a similar tool.
  2. Pull out the hose straight from the joint port and disconnect it. NOTE: The retainer is attached to the pipe even after the connector is disconnected.
  3. Cover the disconnected quick release connector and joint port with vinyl sheeting or a similar material to prevent it from becoming scratched or dirty.

Type A Installation

Note. If the quick release connector O-ring is damaged or has slipped, replace the evaporative hose. A checker tab is integrated with the quick release connector for new evaporative hoses. Remove the checker tab from the quick release connector after the connector is completely engaged with the joint port.

Scheme 31

Scheme 31: Type A Installation
Scheme 31: Type A Installation
  1. Inspect the evaporative hose and joint port sealing surface for damage and deformation. If there is any malfunction, replace it with a new one.
  2. Apply a small amount of clean engine oil to the sealing surface of the joint port.
  3. Reconnect the evaporative hose straight to the joint port until a click is heard. NOTE: If the quick release connector does not move at all, disconnect it, verify that the O-ring is not damaged or has not slipped, and then reconnect the quick release connector.
  4. Lightly pull and push the quick release connector a few times by hand, and then verify that it can move 2.0-3.0 mm {0.08-0.12 in} and is connected securely.

Type B Installation

Note. If the quick release connector O-ring is damaged or has slipped, replace the evaporative hose. When replacing with a new evaporative hose, disengage the release tabs from the join port. A checker tab is integrated with the quick release connector for new evaporative hoses. Remove the checker tab from the quick release connector after the connector is completely engaged with the joint port.

Scheme 32

Scheme 32: Type B Installation
Scheme 32: Type B Installation

Scheme 33

Scheme 33
Scheme 33
  1. When newly replacing the quick release connector, remove the release tab using the following procedure. Widen the retainer lock using a flathead screwdriver, then pull out the release tab from the joint port and remove it.
  2. Inspect the quick release connector and joint port sealing surface for damage and deformation. If there is any malfunction, replace it with a new one.
  3. Apply a small amount of clean engine oil to the sealing surface of the joint port.
  4. Reconnect the quick release connector straight to the joint port until a click is heard. NOTE: If the quick release connector does not move at all, disconnect it, verify that the O-ring is not damaged or has not slipped, and then reconnect the quick release connector.
  5. Lightly pull and push the quick release connector a few times by hand, and then verify that it is connected securely.

Type C Installation

Note. If the quick release connector O-ring is damaged or has slipped, replace the piping component. A checker tab is integrated with the quick release connector for new fuel hoses and evaporative hoses. Remove the checker tab from the quick release connector after the connector is completely engaged with the fuel pipe.

CAUTIONBe sure to replace the retainer with a new one to prevent gas leakage.

Scheme 34

Scheme 34
Scheme 34
  1. Install a new retainer to the quick release connector.
  2. Reconnect the hose straight to the pipe until a click is heard.
  3. Lightly pull and push the quick release connector a few times by hand, and then verify that it is connected securely.

Type D Installation

Note. If the quick release connector O-ring is damaged or has slipped, replace the evaporative hose. When replacing with a new evaporative hose, disengage the release tabs from the join port. A checker tab is integrated with the quick release connector for new evaporative hoses. Remove the checker tab from the quick release connector after the connector is completely engaged with the joint port.

Scheme 35

Scheme 35: Type D Installation
Scheme 35: Type D Installation

Scheme 36

Scheme 36
Scheme 36
  1. When newly replacing the quick release connector, remove the release tab using the following procedure. Widen the retainer lock using a flathead screwdriver, then pull out the release tab from the joint port and remove it.
  2. Inspect the quick release connector and joint port sealing surface for damage and deformation. If there is any malfunction, replace it with a new one.
  3. Apply a small amount of clean engine oil to the sealing surface of the joint port.
  4. Reconnect the quick release connector straight to the joint port until a click is heard. NOTE: If the quick release connector does not move at all, disconnect it, verify that the O-ring is not damaged or has not slipped, and then reconnect the quick release connector.
  5. Lightly pull and push the quick release connector a few times by hand, and then verify that it is connected securely.

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