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cat 3406b serial number

Posted By freeman Sunday, May 04, 2008 3:14 PM
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freeman
 Posted Sunday, May 04, 2008 3:14 PM
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Hi everyone-first I would like to thank everyone for all the help you have given me-I have been a long time lurker-all my questions have been answered with a search.This is my first post-my computer skills need a lot of improvement.I am trying to find the serial number on a cat 3406-I have been told and have read it should be on the block on the right rear. I can't find it there or anywere else.I can see where there was a tag on the front valve cover, but it's long gone. Thanks,Mark.Also i'm HAPPY the ice went off the lake today-spring is here in northern minnesota.
The California Kid
 Posted Sunday, May 04, 2008 5:53 PM
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The serial number should be stamped on the right side of the block towards the rear.  A lot of motors have a right side water filter, it would be behind it.  If the motor has several coats of paint, it could be covered.  The serial number for a B model Cat that you are looking for is on the block, not the head or anywhere else.  The numbers are very small and hard to see, they are not big like casting numbers. Hope I helped.  :D
freeman
 Posted Monday, May 05, 2008 11:29 AM
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thanks California Kid-I think I better get the powerwasher going and my reading glasses cleaned up.Mark
Lug
 Posted Wednesday, May 07, 2008 2:27 PM
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Hey Mark, you never told me you had or were looking for a 3406. Is this in the dump truck you bought in Wisconsin? Things are warming up in Illinois too!   Tom
freeman
 Posted Monday, July 28, 2008 2:31 PM
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Thanks CALIFORNIA KID,I finally found the numbers-just where you said they would be,but they were behind the exhaust pipe so I didn't find them till now.My engine had an oil leak from the exhaust side of the turbo-I thought maybe the turbo,but I took it off and ran the engine and the oil is coming from the exhaust.The engine ran OK,good oil pressure,but had some blowby.Now I think it's time for an in frame rebuild.I have done this before on a cummins,but this will be my first try on a cat.Any tips would be appreciated.The engine number I found is 7FB28474. The turbo number is OR6958.Any info about this engine and in-framing it would be appreciated. Thanks, Mark.
glenn akers
 Posted Monday, July 28, 2008 4:23 PM
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freeman (7/28/2008)
Thanks CALIFORNIA KID,I finally found the numbers-just where you said they would be,but they were behind the exhaust pipe so I didn't find them till now.My engine had an oil leak from the exhaust side of the turbo-I thought maybe the turbo,but I took it off and ran the engine and the oil is coming from the exhaust.The engine ran OK,good oil pressure,but had some blowby.Now I think it's time for an in frame rebuild.I have done this before on a cummins,but this will be my first try on a cat.Any tips would be appreciated.The engine number I found is 7FB28474. The turbo number is OR6958.Any info about this engine and in-framing it would be appreciated. Thanks, Mark.
      One thing i would do and many guys dont think to do but pull the advance and check it and make sure and get it timed back to its specs.  the 7fb is a good engine but the timing needs to be on the money.


glenn akers
freeman
 Posted Monday, July 28, 2008 4:33 PM
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Thanks Glen for the quick reply.I will check the advance timing,and I'm sure I will have more questions later. Mark

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