Noise from Bell housing

[scott2093]

Got the Yukon back in garage. Was going to wait until tomorrow to start removing the transmission but figured I'd goof around some tonight. Noticed this noise once I loosened the torque converter from flexplate. Is this normal? Guessing it sounds like the pump area. Obviously the converter doesn't shake back and forth in normal operation. Just something I noticed and was curious about.

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[GoToGuy]

That could just be space or lash between gear teeth. I'm be real interested at the flex plate to crank area. If or when you remove the flex plate I would inspect very closely, the ring gear , and bolt mounting areas.

 

[JDGMC]

Any vibration or noise driving at certain speeds? Check your endplay.

 

[scott2093]

That could just be space or lash between gear teeth. I'm be real interested at the flex plate to crank area. If or when you remove the flex plate I would inspect very closely, the ring gear , and bolt mounting areas.

That's exactly what it seems like but I wouldn't know. I know I keep trying to get a close peek before it comes off and just can't see anything useful yet. Can see the flex/crank bolts....no signs of anything.... Maybe when I go to remove them, one will be loose....

Any vibration or noise driving at certain speeds? Check your endplay.

Not really as far as I can tell. I did have some front end vibration at 70mph+ but think I have that sorted from front end stuff being done... Still have some but my tires are pretty cupped in areas atm....
I'll check out those measurements...thanks..

 

[scott2093]

That could just be space or lash between gear teeth. I'm be real interested at the flex plate to crank area. If or when you remove the flex plate I would inspect very closely, the ring gear , and bolt mounting areas.

That's exactly what it seems like but I wouldn't know. I know I keep trying to get a close peek before it comes off and just can't see anything useful yet. Can see the flex/crank bolts....no signs of anything.... Maybe when I go to remove them, one will be loose....

Any vibration or noise driving at certain speeds? Check your endplay.

Not really as far as I can tell. I did have some front end vibration at 70mph+ but think I have that sorted from front end stuff being done... Still have some but my tires are pretty cupped in areas atm....

Quick rough check of endplay measurements appear at least near that spec...Kinda hard to measure bellhousing to converter pads with the flexplate installed...

I need a different type of caliper..... looks like just over an inch from bellhousing to converter pads and about 1/4" between flexplate and motor...
Will measure better tomorrow...thanks for that..

 

[JDGMC]

The type of debris in the trans fluid and filter will dictate the route you will have to take regarding repairs. Good luck

 

[scott2093]

I'm not seeing anything wrong with the flexplate..... but not sure what I could be looking for....Bolts were super tight so I'm guessing they were all torqued as they should have been.....
Was really hoping to see something obvious......
ring gear does have some areas where it doesn't look solid but not sure if those areas are normal......I'm guessing a new flexplate would be mandatory at this juncture anyway?
Any direction from here would be appreciated....
I'll look at Nick's previous advice about poking around the pump area...
I'll get some more video of crank area too....

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[HotWheelsBurban]

I'm not seeing anything wrong with the flexplate..... but not sure what I could be looking for....Bolts were super tight so I'm guessing they were all torqued as they should have been.....
Was really hoping to see something obvious......
ring gear does have some areas where it doesn't look solid but not sure if those areas are normal......I'm guessing a new flexplate would be mandatory at this juncture anyway?
Any direction from here would be appreciated....
I'll look at Nick's previous advice about poking around the pump area...
I'll get some more video of crank area too....

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I see a few chipped teeth, just in the thumbnail. My burb had a bad spot on the flexplate, and if you happened to "land" on that spot when the engine stopped, you'd have to bump it past that, to get the starter Bendix to properly engage. Ended up replacing the flexplate after it busted the nose cone off the starter....

 

[JDGMC]

Pull off the torque conv and in a clean pan dump the fluid. do the same with the oil pan. Post what you see.

 

[JDGMC]

I'm not seeing anything wrong with the flexplate..... but not sure what I could be looking for....Bolts were super tight so I'm guessing they were all torqued as they should have been.....
Was really hoping to see something obvious......
ring gear does have some areas where it doesn't look solid but not sure if those areas are normal......I'm guessing a new flexplate would be mandatory at this juncture anyway?
Any direction from here would be appreciated....
I'll look at Nick's previous advice about poking around the pump area...
I'll get some more video of crank area too....

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and Trans Filter