Replace the muffler hardware.
THE MUFFLER ON THE 3-KW TACTICAL QUIET GENERATOR TAKES QUIET A SHAKING WHILE THE GENERATOR IS RUNNING
THIS VIBRATION LOOSENG THE MOUNTING HARDWARE AND LEADS TO CRACKS IN THE EXHAUST PIPE.
A CRACK IN THE PIPE OR MUFFLER CAN LEAD TO EXHAUST SYSTEM FAILURE, WHICH MEANS MORE SMOKE AND NOISE.
IT CAN ALSO LEAD TO GENERATOR SET DAMAGE OR FAILURE!
IN THE PAST, OUR ADVICE WAS TO CHECK THE MOUNTING HARDWARE OFTEN AND TIGHTEN AS NECESSARY.
OUR ADVICE DID NOT SOLVE THE PROBLEM.
SO, WE HAVE NEW ADVICE, USE STRONGER MUFFLER-MOUNTING HARDWARE!
Replace the current muffler bracket mounting cap screw--M6, 8.8--with cap screws--M6, 10.9--NSN 5305-01-303-5631.
Replace this black screw ...
...with this yellow screw
Don't reuse the lock washers. Get new ones with NSN 5310-01-476-9079.
Add two new flat washers, NSN 5310-01-566-5242, to each cap screw. These washers are black and thicker than the old yellow washers
It could be that this job has already been done on your generator. Check the top of the cap screws. If the top has a raised W.T 10.9 and is yellow, you're good. If it has a raised FS 8.8 and is black, you're bad. Replace the hardware!
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|Title Annotation:||3-kW TQG ...|
|Publication:||PS, the Preventive Maintenance Monthly|
|Date:||Mar 1, 2009|
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