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Autor Thema: knock knock knock on heavens door  (Gelesen 1239 mal)

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Pederkr

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knock knock knock on heavens door
« am: 26 August 2020, 17:51:47 »

 I have a sound "klonk klonk klonk" at idle from the back of the sprocket. I changed the chain and tensioner and bearing in the camshaft last year, so I guess I have to disassemble it again to see if anything is wrong. I have a reasonably proffesional listening apparatus, and have no doubt that the sound comes from there.
Anyone have a good idea why the noise.

Peder
« Letzte Änderung: 26 August 2020, 17:53:57 von Pederkr »
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knock knock knock on heavens door
« am: 26 August 2020, 17:51:47 »

cledrera

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Re: knock knock knock on heavens door
« Antwort #1 am: 26 August 2020, 18:48:52 »

Maybe the position of the sprocket on the camshaft or the bearing(s) of the camshaft.
"to disassemble it again" is a good idea.

Do you have a soundfile?
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Jollyjester

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Re: knock knock knock on heavens door
« Antwort #2 am: 27 August 2020, 08:59:36 »

The usual ' listening device' is a large screwdriver.

The 'flat' end on where ever, the handle next to  your ear

Those of a nervous disposition, ' Do Not' attempt this or at your 'own risk'

The 'screams' of 'let me out' from internal parts !!!

Truly amazing
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Pederkr

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Re: knock knock knock on heavens door
« Antwort #3 am: 27 August 2020, 09:42:43 »

The usual ' listening device' is a large screwdriver.

The 'flat' end on where ever, the handle next to  your ear

Those of a nervous disposition, ' Do Not' attempt this or at your 'own risk'

The 'screams' of 'let me out' from internal parts !!!

Truly amazing


Got this one works perfekt  :schrauber:
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Pederkr

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Re: knock knock knock on heavens door
« Antwort #4 am: 28 August 2020, 18:03:37 »

Got a youtupe link

https://www.youtube.com/watch?v=tWlXZb3X4d4&feature=youtu.be



Maybe the position of the sprocket on the camshaft or the bearing(s) of the camshaft.
"to disassemble it again" is a good idea.

Do you have a soundfile?
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cledrera

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Re: knock knock knock on heavens door
« Antwort #5 am: 28 August 2020, 20:20:09 »

Sounds like the chain
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rolf

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Re: knock knock knock on heavens door
« Antwort #6 am: 28 August 2020, 20:43:18 »

end of september I will be for a week in DK....probably Blavand....if you like you can visit us with your R26 and we will find out what is knocking....interested?
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Anulu

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Re: knock knock knock on heavens door
« Antwort #7 am: 28 August 2020, 21:03:13 »

So so... Blavant

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rolf

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Re: knock knock knock on heavens door
« Antwort #8 am: 28 August 2020, 23:20:08 »

"D"
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Pederkr

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Re: knock knock knock on heavens door
« Antwort #9 am: 29 August 2020, 12:36:42 »

What a pitty. I'will be at the "Krankenhaus" in the end of september and start oktober.
I belive i have locatet the fault, i am mistaken my breather as i renember it is badly worn. I will take the engine out, an in doubt, i will post some pictures.

Thanks for the invitation :-)

end of september I will be for a week in DK....probably Blavand....if you like you can visit us with your R26 and we will find out what is knocking....interested?
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rolf

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Re: knock knock knock on heavens door
« Antwort #10 am: 29 August 2020, 12:59:21 »

GOOD luck...for the fault and the "Krankenhaus"!
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Rawost

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Re: knock knock knock on heavens door
« Antwort #11 am: 30 August 2020, 09:53:33 »

So so... Blavant


Blåvand?


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rolf

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Re: knock knock knock on heavens door
« Antwort #12 am: 30 August 2020, 10:30:30 »

 :thumbsup:
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Pederkr

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Re: knock knock knock on heavens door
« Antwort #13 am: 31 August 2020, 20:23:05 »

GOOD luck...for the fault and the "Krankenhaus"!

Be sure to visit Tirpiz

https://vardemuseerne.dk/de/museum/tirpitz-de/

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Pederkr

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Re: knock knock knock on heavens door
« Antwort #14 am: 02 September 2020, 18:53:47 »

Then I got the engine disassembled
As can be seen, the vent has been stuck and has torn the contact surface in the comb cover.
At the same time, my new chain was tight not so tight anymore, only 2 years old. Now I look forward to hearing if it has helped.
Noticed that when I had the chain off I could hear a faint clap clap clap from the cam shaft when I turned one around, but the cam followers must also say a little noise when the push rods are not mounted
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knock knock knock on heavens door
« Antwort #15 am: 02 September 2020, 19:10:03 »

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cledrera

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Re: knock knock knock on heavens door
« Antwort #16 am: 02 September 2020, 19:27:40 »

And please:
Did you restore the engine before the 25.08.2018?
Listen to (ca. 8:30 min)




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Pederkr

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Re: knock knock knock on heavens door
« Antwort #17 am: 02 September 2020, 19:37:05 »

Yes i did buy this chaintensioner by Ullis
Now i had to bend the spring to make the spring more strong.
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Pederkr

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Re: knock knock knock on heavens door
« Antwort #18 am: 02 September 2020, 19:39:30 »

And please:
Did you restore the engine before the 25.08.2018?
Listen to (ca. 8:30 min)

Yes i did restore the engine before the date. First time i did the restore were in 2017

New chain + tensioner + piston + bore cylinder





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cledrera

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Re: knock knock knock on heavens door
« Antwort #19 am: 03 September 2020, 09:04:39 »

I believe I hear the chain in the video from 25.08.2018.
However: You need a new chain and an new Tensioner.
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rolf

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Re: knock knock knock on heavens door
« Antwort #20 am: 03 September 2020, 09:26:57 »

as I  understood:
he has a new chain and a new tensioner
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Re: knock knock knock on heavens door
« Antwort #21 am: 03 September 2020, 10:15:16 »

Hej Peder,
check the contact-surfaces of the tappets / cam-followers and the camshaft lobes.
Also check sideplay of tappets in their guides. Too much play there is a common cause for noise.
If you have already disassembled the camshaft, I urgently recommend to renew the camshaft bearings.
These are standard-bearings, available everywhere and not expensive.
If your current cam-bearings are worn or badly damaged, this could be the reason for noise and also for the damaged vent-seat-surface,
as well as for the short life of your new old chain. Also check the cam-bearing seats for wear, it may be for the worst case,
that damaged bearings seized and rotated completely (with outer ring) in the seats and also damaged the surfaces, as seen on your vent-seat.
After all I'd investigate for the root-cause of damaged bearings and vent-seat-surface.
-> Oil-supply OK ?

mange hilsener,
Sascha
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Re: knock knock knock on heavens door
« Antwort #22 am: 03 September 2020, 12:39:01 »

Zitat
he has a new chain and a new tensioner

Sure,
but ok?
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Pederkr

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Re: knock knock knock on heavens door
« Antwort #23 am: 03 September 2020, 14:44:50 »

Found out that the sprocket were not locatet in the rigt place on the camshaft. This made the scorce surface on the cover, as the breather did not move freely.
Camshaft OK bearings brand new and cam follower is new so is the Hulse
Chain is ok but a lot of slack, as the tensioner were not as hard enough to make the chain in tension on the underside. This make sense as the noise were worst in ideling.

Oil, i did suffer for a wet head gasket, especialy at the return side at the pushrods. This make sense as the breather has not been working ok, so no vacum/under pressure on return flow of the oil. As shown at the old picture the sproket does not allign.

Any one has the messurement on were the sproket is locatet at the camshaft
« Letzte Änderung: 03 September 2020, 16:42:04 von Pederkr »
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Pederkr

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Re: knock knock knock on heavens door
« Antwort #24 am: 03 September 2020, 14:48:23 »

Sure,
but ok?


I'm Sure and OK so is the chain  :thumbsup:
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Re: knock knock knock on heavens door
« Antwort #25 am: 04 September 2020, 08:51:02 »

location of the sprocket;
as described in the reparations guide (Werkstatthandbuch....you own one?): the sprocket/chain is on line with the other sprocket
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Pederkr

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Re: knock knock knock on heavens door
« Antwort #26 am: 04 September 2020, 13:09:04 »

location of the sprocket;
as described in the reparations guide (Werkstatthandbuch....you own one?): the sprocket/chain is on line with the other sprocket


Rolf once again you were right. Toke the camshaft out warm it up to 180 degress, in the lay and pop it went.
Spocket is now in place and the spocket on the "kurbelwell" and camshaft is aligned.

I belive new chain and chain tensioner and all my "noice" problems are gone.


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Pederkr

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Re: knock knock knock on heavens door
« Antwort #27 am: 04 September 2020, 15:29:01 »

Maybe the position of the sprocket on the camshaft or the bearing(s) of the camshaft.
"to disassemble it again" is a good idea.

You were right  :applaus:

Thanks for your help

Do you have a soundfile?
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Re: knock knock knock on heavens door
« Antwort #28 am: 04 September 2020, 16:06:13 »

I belive new chain and chain tensioner and all my "noice" problems are gone.
Caution!
This washer must be mounted vice versa!
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Re: knock knock knock on heavens door
« Antwort #29 am: 04 September 2020, 16:19:32 »

Sehr gut, Adlerauge....habe ich glatt übersehen
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