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  #1  
Old 07-10-2019, 12:45 PM
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Knocking coming from right tire

Hey All,

I'm a novice here and I'm trying to figure out certain issues with my 81 300D non turbo sedan. Any help would be appreciated.

I hear a knocking sound coming from the right front tire when making sharp right turns. I don't hear so much when I'm making a wide turn or a left turn though.

Any thoughts?
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  #2  
Old 07-10-2019, 12:56 PM
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stock wheels and tires?
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  #3  
Old 07-10-2019, 01:37 PM
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It has the stock Bundt rims. Not sure of the tire brand but they are the correct size.
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Old 07-10-2019, 01:55 PM
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Next, check the ball joints and tie rod ends for play.
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  #5  
Old 07-10-2019, 02:01 PM
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Quote:
Originally Posted by johnbob View Post
Hey All,

I'm a novice here and I'm trying to figure out certain issues with my 81 300D non turbo sedan. Any help would be appreciated.

I hear a knocking sound coming from the right front tire when making sharp right turns. I don't hear so much when I'm making a wide turn or a left turn though.

Any thoughts?

It's Bob Dylan.
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  #6  
Old 07-10-2019, 02:01 PM
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Check your lug nuts. Sounds stupid, but what you describe is certainly a symptom of loose ones.
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  #7  
Old 07-10-2019, 02:12 PM
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Could be a shifted belt in the tire, also could be bad wheel bearings.
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  #8  
Old 07-10-2019, 02:39 PM
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I think the short story is that there is no one particular case you need to inspect all at least on that side if the front end that can wear or deteriorate.

Are you experiencing any abnormal tire wear?

Note it is easy to check the Tie Rods. Safely jack up one wheel and don't rotate it but try to turn it from side to side and watch the Tie Rod ends for movement.

Note there might be a Youtube vid on that.
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  #9  
Old 07-10-2019, 02:59 PM
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Brake support mount is gone south?
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  #10  
Old 07-10-2019, 07:42 PM
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Rhythmic thump or distinct knock or irregular ? .
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1982 240D creampuff 370,000 miles
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1974 350SLC 4 speed stickshift SOLD & missed
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  #11  
Old 07-10-2019, 07:46 PM
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Quote:
Originally Posted by Maxbumpo View Post
Brake support mount is gone south?
Excuse my ignorance, but what the heck is a brake support mount? You mean the caliper bracket?
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  #12  
Old 07-10-2019, 08:03 PM
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Yes, caliper bracket.
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  #13  
Old 07-10-2019, 08:10 PM
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That would not cause knocking during turns though.
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  #14  
Old 07-10-2019, 08:13 PM
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Quote:
Originally Posted by Maximan1 View Post
Excuse my ignorance, but what the heck is a brake support mount? You mean the caliper bracket?
Brake support mount is also known as a lower guide rod mount (MB Part number 123-330-13-35)
Different from the caliper bracket.
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  #15  
Old 07-10-2019, 08:23 PM
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Thumbs up Strut Mount

Thanx ! .

This thing makes a creaking noise when first it goes bad, followed by a clunking sound as it gets worse but not a rhythmic noise.....
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-Nate
1982 240D creampuff 370,000 miles
1978 300CD back from the dead&1980 300CD ~ SOLD
1984 300CD KEEPER ! 440,XXX miles
1984 Euro 300TD Fully optioned SWMBO's
1974 350SLC 4 speed stickshift SOLD & missed
Krazy Kommie Ural Motos (3)
BMW Moto R60/6 Barn Find, 8,000miles
1959 VW #113 Deuxe Beetle, 36hp engine, stock
Junk, Rust, Arthritis, Crushed Spine,Broken Neck&Back
Memories, Peace Of Mind
facts & reality don't change because you can't handle them
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