Pneumatic Circuit System Problems Repair and Troubleshooting
5 - 46 046-001141-00 A5/A3™ Service Manual
5.3.3.4 Leak Test of the Oxygen Ratio Controller (ORC)
Perform a leak test of the ORC assembly by using the following tools:
• Negative pressure ball (quantity:1)
• 3106-06-00 adapter connector (quantity:1)
• 3126-06-00 tube plug (quantity:2)
• 3126-04-00 tube plug (quantity:1)
• PU tube (6X100) (quantity:1)
Test procedures:
1. Disconnect tube 3 and pull out the end of the tube which connects to the Y piece. Occlude the
pulled-out end with “3106-06-00 adapter connector and 3126-06-00 tube plug.
2. Disconnect tube 46 and pull out the end of the tube which connects to the Y piece. Connect
the pulled- out end to the negative pressure ball directly.
3. Flatten the negative pressure ball to remove the gas inside.
FIGURE 5-46
4. Release the negative pressure ball. If the negative pressure ball is fully expanded within 30
seconds, it indicates that the Oxygen Ratio Controller is damaged. Handle this problem as
described in the troubleshooting table. If not, continue the following test.
5. Re-connect the tube.
6. Disconnect tubes 48, 49, and 32. Pull out the tube ends which connect the ORC. Occlude the
pulled-out ends with two 3126-06-00 tube plugs and one 3126-04-00 tube plug. Disconnect
tube 30. The end of the tube which connects the ORC is not pulled out but the other end is
pulled out and is connected to the negative pressure ball through “3106-06-00 adapter
connector”.
No. 33 PU Tube
No. 46 PU Tube
To Next Page
Loading...
Need help?
General
