clunking noise

[pepper]

My attex gives a clunking noise when i turn it , all the mounts are tight and the chains are new and adjusted but it is a pretty loud clunk. will the t20 do this if it is out of adjustment?

[fordmtrsp]

attex

My attex gives a clunking noise when i turn it , all the mounts are tight and the chains are new and adjusted but it is a pretty loud clunk. will the t20 do this if it is out of adjustment?

I dont know for sure but i would say there is too much slop in on of the chains or there is slop in the bolt that fasten the sproket tubes to the axles.

[LarryW]

Also not sure on T-20 but I would check the axle bearings, maybe?

[REB181]

Sounds like axle bearings...Jack it up ....

[Marc]

I had the same trouble a few days ago.
I had a Solo 750 for sale with a T20 transmission and everytime you want to turn then you heard a bad sound and the steeringlever moves a little bit. but it turns !
I liftes the vehicle from the ground with a forklift and started the engine - please children dont try this at home !!!! . Everything worked, also the driving and braking one side, but on the ground with resistance against the tires it makes the noise.
So if you have the same problem (the noise only apears only if the vehicle is turning on the ground) then it is only the adjustment of the main chains or the transmission. On a forklift you could see how much the transmission "worked", and so i think the chain slides nearly over the sprocket in the moment of the noise. I readjusted it and it was gone, but sadly a few days later i had the same problem again so i have to adjust it again. But this is more difficult at a Solo then at a Attex i think.
So check the chainadjustment and maybe also the transmissionmount if the transmission is absolutely fixed at the frame. And the trans must be in the right angle of cause.
If the noise also apears on the forklift, or if the vehicle did not turn, then there is something realy damaged.
Hope this helps.

[pepper]

ok i think i found the culpret. The axle shafts are held in by two little set screws on a collar that are part of the bearings and it seems that the axle were able to slide in and out a bit. I took all the wheels of and slid the axles all the way in and made sure the chains were lined up and then i tightned the set screws. are these little set screws the only thing that hold the axles in place besides the sprocket tube? There seems to be enough room on the shaft after it goes through the inboard bearing to put another collar on it should i do that for added security? . I am almost tempted to tack it in place anyone done this?

[liflod]

You need to rotate those collars onto the bearing to lock it into place before tightening the screws. You may want to check and see if the bearing is broken where the collar rides and locks.

[pepper]

these collars are only held in place by set screws they dont seem to be the cam lock ones like a max has

[liflod]

Are the collars separate or are they part of the bearing?

[Don]

It looks like someone may have installed the wrong bearings in your machine, Pepper. The correct part would have a cam-lock eccentric collar.

[whipper-ag]

Got to look @ the pictures. That's the wrong bearing. The right bearing would only have 1 set screw & a detent to lock the eccentric collar.

Whipper

[pepper]

those are the bearings on the machine when i got it . every single bearing is that type both inners and outers the axles ae 1inch solids.

[Don]

That's the correct bearing for the inner set, Pepper. The outers have a removeable collar that is an eccentric cut and turns slightly to lock onto the extended inner bearing race. The Fafnir number is GR100RRB+col.

Don

[whipper-ag]

I was wrong by saying they were the wrong bearings. There are better bearings to use. The clunking noise you hear might be the chains getting out of alignment, because your axles aren't holding their position & shifting back & forth. (Just guessing) You could just have a couple bad sprockets that have lost their form. Half the bearings that were on my Super Chief were just like yours with the 2 set screws. I've seen other people's cars w/ the same bearings. Attex may have used them @ sometime, but not really sure. If you go to a local bearing house ask for this bearing. It's a FAFNIR RA100RRB+ col .Ask for the eccentric cam loc bearing. There's an even better bearing w/ an extended inner race. Those w/ the extended inner race will work better going thru the body. From what I see in the picture , they look pretty rusty & coroded. You probably should change all your bearings & inspect all the sprockets for any damage if they were running out of alignment. Hope this helps.

Whipper

[whipper-ag]

I noticed Don just posted a GR100RRB + col & I posted a RA100RRB + col. Both bearings are correct. I think the # Don posted is for the bearing w/the extended inner race.

Whipper