Q for all of you who's getrag dumped.

[Essler]

I just towed a 10,000# trailer 16 hours and now my getrag(I think) is making a serious whine/howling at higher speeds. When your transmission's crapped out did they make a noise in nuetral at speed, as well as as under load. Or did they quit making noise when you popped into nuetral? Mine makes more noise under load but in nuetral as well. Also if it is my transmission, what would be the most likley culprit? Pocket bearing or something else? Thanks in advance.





Mike

 

[1stgen4evr]

If it still goes, it isn't the pocket bearing. Failure there will (usually) stop you dead. Does it whine in fourth. That is a direct couple straight through the transmission, without any gear load and coupled around the pocket bearing such that it isn't turning.



The differential will whine and telegraph to the transmission stick. There is more to diagnoseing the problem than can be covered since there are several components that are all suspect. Whine can be the result of scuffing on a gear (low oil) but can also arise from entirely different circumstance. Whine can result from improper bearing preload which makes even perfectly smooth gears create a whining noise due to the fact that the involute shape of the gear tooth is sliding on its companion rather than the designed rolling contact. The drop box can be involved as well. You have to first isolate exactly where the noise is coming from.



James

 

[BSchindler]

My Getrag trashed the front lay shaft bearing first. It growled a LOT in the gears but didn't freeze up. The oil looked like silver paint-figured the trans was shot. All the debris in the oil pock marked 90 per cent of the gear faces. Good Luck.

Bob

 

[DVolk]

for all of you who's dumped the getrag

check your rear end im betting its low on oil or the spiders are about gone it happend to me and thats what killed my getrag when it let go

 

[Essler]

Hey all, thanks for the replys. I was into my 80 a little while ago and it seemed fine, but I am going to pop it open again today and double check. Better safe than sorry. :{



p. s. I've figured out that noise won't happen around town. Only once I get up to highway speeds and then slow back, it wiil make the noise then until 25mphish and then go away and stay gone if i stay under 60ish. Hope that clears it up a bit.

 

[Essler]

Ok , i went through the rear diff(ok) then i popped out the driveshafts, idled her up and ran through the gears. The noise is speed related, not rpm or gear specific. I cant narrow it down between the t/c or transmission. Is there a certain gear or bearing in either that would be speed sensitive and is known to crap out? I have never taken apart a getrag so I have no mental pic of what it could be. I am going to pop of the t/c and dig into it first, just to see if it's coming from in there(I doubt it though, I've put 205's through alot worse).

Any ideas guys?

 

[1stgen4evr]

"The noise is speed related, not rpm or gear specific. "



With the drive shafts out, it isn't related to the axles



"Does it make the noise in fourth. That is a direct couple straight through the transmission, without any gear load and coupled around the pocket bearing such that it isn't turning. "



So you mention that it isn't a particular gear and if I follow, you mean that it is at a specific speed on the speedo. Can you rule out (or in) fourth.





"I have never taken apart a getrag so I have no mental pic of what it could be. "



You will find that it is very familiar if you have had any other design apart. The differences are truly minor. The fact that the OD is in the back and inside the main case requires some assembly differences, the bearings are taper roller type and that is about all. Those (taper bearings) require shims and that is easy enough. PM Michael Miller for the calibration specs on your feel-o-meter. He just did his. His is fwd as well. I don't have a first gen with fwd so can't help with that.



Not knowing any better, I would suspect the drop box.



James

 

[Essler]

Thanks for the reply. It will make the noise in any gear and in neutral at speed. In other words in my driveway with the driveshafts off, so long as the speedo showed above 60k(mph?) it made the sound, 4th or 5th, didn't matter. On the road it does in in all gears and nuetral. Load does seem to make it worse tho. Hope that helps a bit, thanks.