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Old 10-04-2015, 12:26 PM
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Transfer case whine

Hi all, I am new to the forum and have a question about the transfer case. I did a search here and could not come up with anything.
I have a 242 transfer case and I am getting a whine/whirring noise coming from the front end. The noise starts about 40 mph and gets louder the faster I go and gets much louder when I let off the gas and especially going down hill. It does this going straight, turning left and right, and with the transmission in neutral. I removed the front drive shaft and still have the noise. I took it to one shop and they said it was in the front differential. I normally do all of my own work but figured the differential was a little more than I wanted to tackle so they replaced three bearings and I still have the noise. I took it to another shop and they put it on a lift and say the noise is coming from the transfer case. I will replace that myself but am a little concerned when I drained the fluid and found it looking like new. Absolutely no metal and not discolored, so my question is: Is there any bearing or part that could cause the noise that would not create metal in the fluid? This noise has been going on for quite awhile.

Thanks for your help.

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  #2  
Old 10-05-2015, 05:19 AM
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Re: Transfer case whine

Welcome to the garage.
Did the guys at the shop run the engine on the lift, to come to the conclusion that the T-case is the problem?
The T-case bearings normally donīt wear that easily, because they are in a closed and well lubricated area, but impossible its not. If so, i would expect or the input axle bearing, or one on the axle going to the rear prop shaft.
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Old 10-05-2015, 12:13 PM
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Re: Transfer case whine

Yes they ran the engine and put it in gear. Said the noise was definitely coming from the transfer case.
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Old 10-05-2015, 01:03 PM
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Re: Transfer case whine

In that case i would look for a used 242 case. You can open it up and change the bearings.
Did they check the U-joints in the rear prop shaft? Play in there, can cause noises, which be transferred to the T-case. Also have a look at the rear diff fluid level and quality. Better checking too much now, than finding that the T-case repair didnīt solve the problem.
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