transmission noise

[Jack in Alaska]

I have a new noise coming from the transmission area. It started about 3000 miles ago and is gradually getting worse.

It is a real high pitched intermittent squealing and can usually be silenced by moving the gear shift. It only does it when cruising in 6th gear.

I am halfway through a 4200 mile run back to Alaska from Az. Hopefully it will stay together until Anchorage.

Any ideas???

 

[Jack in Alaska]

transmission squeal

6 months later and on the road back to Az... the noise is still there but now louder yet.

Any ideas now on what it is??? The service mgr. in Anchorage said it is probably the input shaft seal in the rear end. ???????? It still worries me. My warranty expires in 7 more months. Odometer turned over to 100k miles two days ago. There went the Cummins warranty.

 

[steved]

Are you sure its not a dry pin on one of the universal joints... mine squeaked a few thousand miles before it finally seized.



Not sure how that would be connected to moving the gear shift (unrelated/coincidental)?

 

[Jack in Alaska]

Back in Alaska and it is still squealing and getting louder. I had it looked at in Az. by a Dodge mech. and he could not find it.

Next week it is going into the Dodge folks here in Anchorage and we WILL FIND it. That noise is making me nuts. The Alaska Hyw. is not a road to test drive your rig on. Too far to help.

 

[Jack in Alaska]

After a day at Anch. Chrysler-Dodge-Jeep with two techs. looking... nothing was found. . AGAIN. The sound is still there as I heard it coming back to the house. The entire driveline was inspected piece by piece and all boxes checked for proper fluid. All OK.
Will drive it until something "grenades" and fix it then. I am turning up the radio to solve the problem for now.

 

[HBarlow]

Jack,

Your description doesn't tell us enough to offer suggestions.

Are you saying that it only occurs in sixth gear of your NV-5600? And when it occurs you can silence it by applying slight pressure either pulling or pushing against the shift lever but not moving the shifter out of sixth gear?

 

[Jack in Alaska]

Harvey,
Thanks for the reply.
It makes the sound in all gears but mostly in 1st & 2nd. Maybe the relatively slow speed allows one to hear it better in those gears but I can hear it in all gears.
Moving the shift lever does not really change it.
The sound is a real high pitched tinny/squeaky sound.
My service mgr. thinks it could possibly be a dry seal on an input shaft. He has been diagnosing mech. problems for almost 40 yrs and is pretty good at it. My warranty runs out on July 15 and he retires at end of August. After that I will be paying for it myself and dealing with a new bozo.
I will keep my radio up high and hope for the best.

 

[NIsaacs]

I am not familiar with the AAM axle but does it use an oil slinger on the differential yoke? If it does it might be loose, that is the sound they make if they are spinning free. Since it makes the noise in all gears it might not be the transmission. I would really doubt an input shaft seal being dry unless the oil level was low which I doubt is the case. In fact, I doubt a rubber seal could/would make a noise loud enough to hear, thats grasping at straws.



Nick

 

[S.Morris]

+1 on above.

 

[Wingate]

does the noise change/quit if you are travelling dow the road and simply push the clutch in? Also, does the noise change/quit if you take it out of gear running down the road?