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Old 02-09-2020, 22:20   #1
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Perkins Prima Clattering Noise

Hello all,

I have a Perkins Prima M50 that starts fine, idles fine, runs without a murmur, but then, after running for a couple of hours, then idling, there is a pronounced clattering sound.

Revving the engine stops the clatter.

Idling at startup is fine. Idling after running for a while produces the clatter.

Oil levels are correct.

Any ideas?
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Old 05-09-2020, 20:57   #2
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Re: Perkins Prima Clattering Noise

Audio would be helpful.

Did it suddenly start making a different noise?
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Old 05-09-2020, 22:22   #3
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Re: Perkins Prima Clattering Noise

Quote:
Originally Posted by cuica View Post
Hello all,

I have a Perkins Prima M50 that starts fine, idles fine, runs without a murmur, but then, after running for a couple of hours, then idling, there is a pronounced clattering sound.

Revving the engine stops the clatter.

Idling at startup is fine. Idling after running for a while produces the clatter.

Oil levels are correct.

Any ideas?

Hi, have you checked the tappet clearances?
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Old 06-09-2020, 01:24   #4
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Re: Perkins Prima Clattering Noise

Drive plate going west maybe
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Old 08-09-2020, 16:16   #5
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Re: Perkins Prima Clattering Noise

Had this problem it’s the trans rattling because of “torsional vibration “ caused by the engine .
All Prima M50’s do it . The standard drive plate isn’t effective enough to stop the engines TV . I replaced my 25 yr old Hurth HB10 with a new ZF 12M and a high quality new drive plate with no springs in it and it still chattered .
I did run the engine for an hour “without the trans installed”
and the engine ran silky smooth absolutely no rattle .
The engine’s TV causes the trans to rattle after warm up .
A good quality drive plate will stop it a little.
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