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Universal Multimod Dump Valve Issue

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rem

#62628

Universal Multimod Dump Valve Issue | 2 September, 2010

I am having issues with the air dump on this machine. When you palm down or break interlocks the air dumps as it should however I'm getting a short burst of air back through the system. The problem with this is it's just enough to trigger the table latch cylinder which releases the table everytime I dump air. I've gone through all of the pneumatics and the only thing I have not done is replace the dump valve itself (costly). Has anyone seen this problem before? The system is the same for Radials and VCD's.

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#62633

Universal Multimod Dump Valve Issue | 2 September, 2010

seen it on a uni-mod many times. there is a muffler near that assy that if dirty will cause the air dump to back up and not exit out the muffler. if yours has one, remove it and see if it stops the table latch. it will be loud but it will let you know that is the problem. also check to make sure your table lock is not loose or the small tubing on the stop in the bottom is not broken apart, if the lock is loose it can cause it as well.

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rem

#62641

Universal Multimod Dump Valve Issue | 3 September, 2010

I removed the muffler yesterday and still had the latch releasing issue, the latch was tight, however the table had some play in it. I adjusted the play out of the table, setup table zero and it fixed the problem. Same symptom as if the latch were loose I guess. Thanks for the input.

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