When there is continuous leakage out of a valve exhaust port, proceed as follows to determine if the leak is caused by defective valve seals or by defective cylinder seals.

1. Cylinder retracted as shown in Figure 1
2. If there is continuous leakage out of Exhaust Port “5”, the valve seals are defective and must be replaced.
3. If there is continuous leakage out of Exhaust Port “3”, the problem can be with the valve seals or the cylinder seals. To determine which proceed as follows:
4. Disconnect the line between Valve Cylinder Port “2” and the Cylinder Port “B” Figure 2.
5. If leakage continues out of Exhaust Port “3” and/or Cylinder Port ”2”, the valve seals are defective and must be replaced.
6. If there is a leakage out of the line from the Cylinder Port “B”, the cylinder seals are defective and must be replaced.
7. Cylinder extended as shown in Figure 3.
8. If there is continuous leakage out of Exhaust Port “3”, the valve seals are defective and must be replaced.
9. If there is continuous leakage out of Exhaust Port “5”, the problem can be either the valve seals or the cylinder seals. To determine which proceed as follows:
10. Disconnect the line between Valve Cylinder Port “4”, and the Cylinder Port “A” per Figure 4.
11. If leakage continues out of Exhaust Port “5” and /or Cylinder Port “4”, the valve seals are defective and must be replaced.
12. If there is a leakage out of the line from the Cylinder Port “A”, the cylinder seals are defective and must be replaced.