Can you identify strange new noise?

[MT-PTK]

This noise just started within the last few days. It’s been intermittent, and sometimes it doesn’t do it at all. I think my wife described best as having one of those toy cars that you put on the ground and roll it backward to load the spring, let it go and it shoots across the floor. If you were to pull that toy car back to load the spring and then lift it off the floor letting the wheels spin out…you get an idea of the noise. The weird thing is that the motor runs as strong as ever. The transmission isn’t slipping, losing power, or popping out of gear. It has made the noise after downshifting from 3rd to 2nd gear, but it’s also done it when up shifting as well. If I push in the clutch, the noise stops.

Any suggestions would be appreciated.



William

PS: The clutch was replaced about one month ago. The rear main as well as the pilot and throw out bearings etc…were supposed to have been changed too while they had it open. I had been using a local shop since they had an old school Toyota tech who had worked on cruisers before. Previous work was fine. When I took her in for the clutch work, they didn’t tell me he was no longer there. I probably would have taken it to the Cruiser guys in Providence instead had I known. I’m not saying they didn’t do the work right since I can’t say whether it’s related or not at this point.

 

[LukeZero]

throwout bearing

 

[MT-PTK]

throwout bearing

I’m not saying they didn’t do the work right since I can’t say whether it’s related or not at this point.

But I should have added that I have an uneasy feeling.....



Thanks for the reply LZ.




William

 

[LukeZero]

I'd give it a little time to see if it gets better or worse. I had a throwout bearing that was noisy immediately after install- and I was dreading removing both driveshafts, the skidplate, the transfercase, the transmission, both shift linkages, etc. to get to it and replace it.

In the week that I was getting psyched up to tackle it- it settled down. I drove it for three more years after that, without any noise returning. The only thing I can figure out is that the throwout bearing was a little "tight" upon installation and needed to be "broken in". I have no facts to back this up- only my speculation.

 

[MT-PTK]

I'd give it a little time to see if it gets better or worse. I had a throwout bearing that was noisy immediately after install- and I was dreading removing both driveshafts, the skidplate, the transfercase, the transmission, both shift linkages, etc. to get to it and replace it.

In the week that I was getting psyched up to tackle it- it settled down. I drove it for three more years after that, without any noise returning. The only thing I can figure out is that the throwout bearing was a little "tight" upon installation and needed to be "broken in". I have no facts to back this up- only my speculation.

Good point. I had a chirping sound that popped up immediatly after they work was done but it went away after a week or so. I was just concerned that this noise popped up about four weeks or so out from the initial work. I suppose I could wait a bit and see which way it goes. I was just worried not knowing for sure what the noise was that I wasn't doing more damage by driving it. I drive the rig pretty much daily....though I have been using my car a little more recently due to gas prices.


William

 

[Downey]

William, if the good folks who installed/adjusted your clutch did not readjust the slave cylinder push rod properly, the throw-out bearing could have been riding on the pressure plate fingers constantly (not backed-off of them during adjustment), and a noisey/destroyed T.O. bearing would be the result.

 

[lehiguy]

My 60 had no adjustment on the rod from the slave cylinder, but the slave was not bottomed out either, so it shouldn't matter. It did make noise from time to time, only when the clutch was engaged, never when it was disengaged, sort of a rattling sound. I drove over 100k on that clutch before going to an NV4500 (it was Chevy stuff with a Mark's adapter) and it was in such good shape that I kept it all except for the throw out bearing which had to be swapped for a Chevy flavored one. Earlier Cruisers had return springs on the throwout arm to effectively pull the bearing away from the pressure plate and eliminate any chance of the bearing staying in contact with it. Your inspection plate under the bellhousing should reveal whether or not the bearing is riding on the pressure plate. Should be VERY close to it, but not turning.