PC Bearing

[gusto]

I just received my pc 7424 from coastal tool and it doesnt sound right. It`s making a grinding noise and it sounds like its coming from the bearing. Is this normal?



I put the 6" counter-weight and the problem still exists.

[gusto]

Is there a break in period or something ?

[armoredsaint]

Is it a squeaky sound when it is stopping? Mine does that too.

[gusto]

It makes the sound while its running.

[BlueDragonZ]

I`ve been reading up on this subject trying to familiarize myself with a PC because I won one here. I read a post by someone asking the same thing and I think it`s a natural noise that the machine makes if it`s not on a surface. I`m sure the PC Gurus will chime in here soon.

[gusto]

What about the hook and loop backing pad that came with my pc. Couldn`t I of used that backing plate instead of ordering the meguiars plate ?

[gusto]

Is the only difference between the two plates the size ?

[chu_singming]

Gusto, I`m having similar issues with my PC that I got from Coastal Tool (how ironic). I`m not sure if it`s a problem or not. Mine doesn`t really grind but it just has an odd sound coming from it. When I shake it, I can hear things rattling on the inside. Also, on speed 6 with the 6" counterweight, it vibrates like all hell, I can barely stand it.



Don`t know what the problem is.

[gusto]

Thats good to know, mine is also making a ratttling noise when its off. Looks like I`ll be returning mine.

[Accumulator]

Whenever you`re usure about some new purchase, I wouldn`t argue against sending it back while you still can. There`s no "break in" period. If you have a return period that is NOT about to expire, I`d use it for a while and see if the noise gets worse. Generally, when there`s something wrong, you can REALLY tell and it DOES get worse.



Both of my (well used) PCs rattle when I shake them (turned off). Some make more noise than others, I only get them serviced when it gets REALLY bad/unusual (as in "whoa, this thing`s REALLY screwed up!" sounding). Some make a "wind down" noise more than others when you turn them off.



Some people are more sensitive to the vibration, especially at speed 6, than others. Using a smaller/lighter backing plate, and even smaller pads, with the 6" counterweight can help. I sorta like my new flex plate from CMA. It`s 5", but I use it with 6" pads and counterweight.



Gusto- Yeah, you can use all sorts of different backing plates (with the 6" counterweight). There will be subtle differences, but nothing to worry about.



There`s just a LOT of indivual variation at work here, between the PCs and the users. It`s sorta like a snowblower, it`s NOT what some would call a smooth, quiet piece of machinery, at least at speed.



Heh heh, or you could always get a Cyclo...it`s a lot more, uhm, "sophisticated" with regard to its noise and vibration.

[togwt]

Quote: PC Bearing







~One man’s opinion, observation~



This may help you get familiar with your PC



http://www.autopia.org/forums/showthread.php?s=&threadid=14421 PC Acessories



http://bimmer.roadfly.org/bmw/forums/detailing/forum.php?postid=1430487&page=1 PC Usage



~Hope this helps~





Experience unshared; is knowledge wasted…/



justadumbarchitect * so i question everything*