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  #1  
Old 05-10-2010, 11:08 AM
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Driver's Front End Clunking Noise? Word of caution on knockoff Klann Compressor

Hey,

I recently did the front end suspension over. Had the car aligned, good to go. Over the last week there is a low clunk at slower speeds over things like rumble strips or smaller bumps in the road. I thought it might be the bearings so I replaced and repacked them (again). The sound is still there.

Since I feel it in the floor I thought it might be the guide rod mount but it's new and was replaced, it's tightened to specs (35nm I believe).

Everything is tight and tourqued to specs.... Any thoughts, experiences?

btw/ I'll post this elsewhere since it's a real pain in the neck; I bought a knockoff Klann Compressor from SG Motorsports, they were helpful and nice but the compressor pretty much exploded as I was putting the spring back in. It just so happened that I had everything in place and was loosening the plates by turning the shaft when the top of the compressor that holds everything together popped off. If the spring wasn't in place and the compressor engaged with the spring you'd probably have seen or heard of my death on the 6 oclock news.

Be forwarned when using knockoff Klann Compressors. So yes, it does "matter" which compressor you're buying, renting, selling, using.

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  #2  
Old 05-10-2010, 11:56 AM
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WOW, that is a wake up call on the compressors

I have one the knock off`s in the red blow molded case.
I have used it 3 times and loaned it out once, so far so good.

Did the plate come apart, or the top of the shaft. as I remember there is a
concave recess in the plate the top of the shaft fits into, this would be the thinnest part of the plate.

It`s the bottom plate that has the 3 cut outs for the 3 little tits on the shaft that worried me more.

Charlie
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Old 05-10-2010, 01:50 PM
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Even one breaking up with no abuse is one too many. I would consign this model to the junk pile if I owned one. There is more than a good chance the copies are using poor steel or the original is forged and the copy is not.

It may not be certain death if one lets go but the potential for very serious injury is there. Hardly worth the risk. It could ruin your life. You have to occassionally play the odds in life but this is too loaded a situation to play with. No pun intended but does apply.

Just my opinions though. If the maker of the copies has a number to contact it might be worth a phone call.
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  #4  
Old 05-10-2010, 02:16 PM
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No idea on the clunk. I'd be contacting the mfg of the spring compressor and looking for my money back.
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  #5  
Old 05-10-2010, 02:49 PM
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every time I see someone thinking of compressing the springs on these babies FOR ANY REASON , I raise the major caution/concern , to use the right tools because if they get away they will kill, glad you are OK , not enough of us nuts that want to keep these cars on the road. Can't afford to loose one
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Old 05-10-2010, 03:08 PM
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Quote:
Originally Posted by dmooney View Post
I had everything in place and was loosening the plates by turning the shaft when the top of the compressor that holds everything together popped off.
Please provide more details of exactly what you mean when you state "popped off".

Did the tool fail in some fashion? Did the plate fracture? Did the thread fracture?
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Old 05-10-2010, 04:14 PM
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Quote:
Originally Posted by charmalu View Post
WOW, that is a wake up call on the compressors

I have one the knock off`s in the red blow molded case.
I have used it 3 times and loaned it out once, so far so good.

Did the plate come apart, or the top of the shaft. as I remember there is a
concave recess in the plate the top of the shaft fits into, this would be the thinnest part of the plate.

It`s the bottom plate that has the 3 cut outs for the 3 little tits on the shaft that worried me more.

Charlie

the top of the shaft. I just threw the thing down into a cardboard box when I fished it all out of the spring and haven't looked at it since.
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Old 05-10-2010, 04:18 PM
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Quote:
Originally Posted by Brian Carlton View Post
Please provide more details of exactly what you mean when you state "popped off".

Did the tool fail in some fashion? Did the plate fracture? Did the thread fracture?

The tool fell apart, bearings fell out. It failed it's one and only time being used. It's possible to get one bum tool I suppose. The guys at SG Motorsports in WA were very apologetic and are giving me a full refund.

They were also very forthcoming with information when I initially purchased the tool. They had pictures, a description, and were very helpful when I called to order.
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  #9  
Old 05-10-2010, 04:47 PM
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Quote:
Originally Posted by dmooney View Post
The tool fell apart, bearings fell out.
That's quite a feat since the Klann and every knockoff that I'm aware of don't have any bearings................
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  #10  
Old 05-10-2010, 04:56 PM
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Quote:
Originally Posted by Brian Carlton View Post
That's quite a feat since the Klann and every knockoff that I'm aware of don't have any bearings................
Brian, I believe there is a bearing in there. My MB Dealership purchased unit has one and a knock off that I used previously had one also.



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  #11  
Old 05-10-2010, 05:00 PM
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Just curious, is this failed compressor like the one seen on ebay? Those too have the red box.

http://cgi.ebay.com/ebaymotors/Strut-Coil-Spring-Compressor-Mercedes-Benz-1801-_W0QQcmdZViewItemQQhashZitem3eff7d761cQQitemZ270574384668QQptZMotorsQ5fAutomotiveQ5fTools

Lower control arm bushings is a job I'll probably be doing in the near future. Hopefully I can rent the Klann compressor from someone.
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  #12  
Old 05-10-2010, 05:02 PM
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Quote:
Originally Posted by dmooney View Post
The tool fell apart, bearings fell out. It failed it's one and only time being used. ....
Could you take a picture of what broke and post it?



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  #13  
Old 05-10-2010, 05:04 PM
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Quote:
Originally Posted by dmooney View Post
Hey,




Be forwarned when using knockoff Klann Compressors. So yes, it does "matter" which compressor you're buying, renting, selling, using.

is the kit you bought shown here:

http://www.sg-motorsports.com/Toolflyers/0309mb3.pdf


and did you ever use an air tool or motorized tool to assist in turning the shaft?
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Old 05-10-2010, 05:16 PM
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Quote:
Originally Posted by DeliveryValve View Post
Brian, I believe there is a bearing in there. My MB Dealership purchased unit has one and a knock off that I used previously had one also.



.

Do you believe the bearing is somewhere inside the threaded actuator? It's far too narrow to support any kind of bearing that would accept an axial load.

The load is borne by the thread............
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  #15  
Old 05-10-2010, 05:25 PM
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Quote:
Originally Posted by Brian Carlton View Post
Do you believe the bearing is somewhere inside the threaded actuator? It's far too narrow to support any kind of bearing that would accept an axial load.

The load is borne by the thread............
What I've seen the bearing is at the top of the body under the ratchet adapter.





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