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Old 09-02-2009, 04:19 PM   #1 (permalink)
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T-18a problem

When I put it in 4 it rattles. Not on the throttle but when I coast it. My mechanic put new bearing in it an it still does it. HELP
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Old 09-02-2009, 05:34 PM   #2 (permalink)
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U shure it is in the trans? Does it make noise in neutral? Does the noise go away when you are in 4th gear?
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Old 09-02-2009, 06:48 PM   #3 (permalink)
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my t18 or dana 20 does it when im coasting or get the speed just right going down the road. like i said im not really sure weather its the transmission or transfer case but i just figured they were all like that.
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Old 09-02-2009, 06:52 PM   #4 (permalink)
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Quote:
Originally Posted by zippyridgerunner View Post
When I put it in 4 it rattles. Not on the throttle but when I coast it. My mechanic put new bearing in it an it still does it. HELP
You put it in 4.....You mean you put in 4th and coast it...not in 4wd and coast it?

Which?
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In what appears to have been an understatement, the plant operator described the situation at the Number 4 reactor as "not so good."

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Old 09-02-2009, 06:52 PM   #5 (permalink)
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my t18 or dana 20 does it when im coasting or get the speed just right going down the road. like i said im not really sure weather its the transmission or transfer case but i just figured they were all like that.
Not mine...But fourth only gets used in Low range at high speed.
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In what appears to have been an understatement, the plant operator described the situation at the Number 4 reactor as "not so good."

Super conversion calculator website

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Old 09-02-2009, 08:24 PM   #6 (permalink)
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It does it in 4th gear 4 wheel drive hi and 2 wheel drive. I don't know if it would do it in 4 low. If I throttle it, it would NOT rattle but when I coast it rattle big time.
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Old 09-03-2009, 04:53 AM   #7 (permalink)
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Make sure the nut holding the t-case input gear to you tranny's output shaft hasn't come loose, that can cause the sounds you are describing.
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Old 09-03-2009, 04:56 AM   #8 (permalink)
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Make sure the nut holding the t-case input gear to you tranny's output shaft hasn't come loose, that can cause the sounds you are describing.
This is possible.
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In what appears to have been an understatement, the plant operator described the situation at the Number 4 reactor as "not so good."

Super conversion calculator website

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Old 09-03-2009, 12:10 PM   #9 (permalink)
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I put a new transfer case in it. Same thing. My mechanic is looking at the shift rail.
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Old 09-03-2009, 12:24 PM   #10 (permalink)
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mine did this for years... nothing ever came of it..
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Old 09-03-2009, 12:38 PM   #11 (permalink)
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My NP435 & Dana 20 combo mated with an Advanced Adapters kit does this too. Was kind of annoying but I got used to it.
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Old 09-03-2009, 01:08 PM   #12 (permalink)
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Chevy engine,T-18a to dana 20. Maybe I should call AA? It is LOUD. My friend's always lean to the right thinking it will blow up!
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