A7™ Service Manual 046-006272-00 5 - 37
Repair and Troubleshooting Pneumatic Circuit System Problems
III AIR supply inlet assembly:
1. Turn off the pipeline gas supply. Disconnect tube 67. The end of the tube which connects
auxiliary gas supply is not pulled out but the other end which connects the Y piece is pulled out.
2. Connect 1MPa test pressure gauge to the above Y piece through “3106-04-06 adapter
connector”.
FIGURE 5-25
3. Turn on AIR pipeline supply. If the reading on the test pressure gauge is not within the range of
0.2±0.05 MPa (29 ± 7 psi), adjust the regulator to cause the reading on the test pressure gauge
to reach 0.2 MPa (29 psi). Record the reading on the AIR pipeline pressure gauge.
4. Turn off AIR pipeline supply and bleed the residual pressure by opening the AIR flow regulator.
5. Reconnect PU tube No.50 into the “Y” fitting. Reconnect tube 67.
6. Pull out No.41 PU tube which connects the AIR supply inlet assembly to the AIR pipeline
pressure gauge. Remove the tube end which connects AIR supply inlet assembly.
7. Connect 1MPa test pressure gauge to the outlet of AIR supply inlet assembly through “3106-04-
06 adapter connector”.
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