The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.
The casting on some main control valves are bad due to the malfunction of the casting machine at the supplier. The bad castings can cause the control valves to leak oil.
The supplier has corrected the issue, however, some defective main control valves have been shipped. Check that the main control valves with the procedure described below.
Illustration 1
Right side view of main control valve
Illustraton 2
If the O-ring is not protruding, perform Step 2
All resource from the website: https://avsmanual.com/i.caterpillar
The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.
The casting on some main control valves are bad due to the malfunction of the casting machine at the supplier. The bad castings can cause the control valves to leak oil.
The supplier has corrected the issue, however, some defective main control valves have been shipped. Check that the main control valves with the procedure described below.
Illustration 1
Right side view of main control valve
Illustraton 2
If the O-ring is not protruding, perform Step 2
All resource from the website: https://avsmanual.com/i.caterpillar
