A5/A3™ Service Manual 046-001141-00 5 - 49
Repair and Troubleshooting Pneumatic Circuit System Problems
FIGURE 5-51
8. Repeat step 5 and step 6 every time when the vaporizer manifold test fixture is transferred to the 
next position. Once the negative pressure ball is fully expanded within 30s, it indicates that the 
rubber plain washers or its lower surface contacted mechanical surface are damaged. Handle 
this problem as described in the troubleshooting table. If the four tests are all past, then 
continue the following tests. 
9. Put the seal ring back, mount the vaporizer and turn it on.
FIGURE 5-52
10. Repeat step 5 and step 6 every time when the vaporizer manifold test fixture is transferred to the 
next position. Once the negative pressure ball is fully expanded within 30s, it indicates that the 
seal rings are damaged. If the two tests are both past, then the vaporizer manifold assembly and 
the four seal rings are OK.