Pneumatic Circuit System Problems Repair and Troubleshooting
5 - 62 046-001141-00 A5/A3™ Service Manual
Test procedures:
1. Turn off the system switch.
2. Check the manual bag and replace if damaged.
3. Check the breathing tube and replace if damaged.
4. Remove the Paw pressure gauge. Check the seal and replace if found damaged.
5. Remove the water collection cup. Check the seal and replace if found damaged.
6. Remove the O2 sensor (if there is no O2 sensor, remove the plug where the O2 sensor should
be installed). Check the seal and replace if damaged.
7. Remove the check valve dome. Check the seal and replace if damaged.
8. Remove the bag arm. Check the seal and replace if damaged.
9. Remove the prepak assembly as shown below. Check the seal and replace if damaged.
FIGURE 5-66
7. Check the APL valve, support tube on the median plate, and sealing components of the Auto/
Manual ventilation switch assembly
The test requires a T-shaped Allen wrench.
Test procedures:
1. Turn off the system switch.
2. Remove the APL valve. Check all seals and replace the defective ones.
3. Remove the support tube on the median plate. Check the seals and replace the defective
ones.
4. Remove the Auto/Manual ventilation switch. Check the seals and replace the defective ones.
8. Check the CGO assembly
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