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ebenhask
Samba Member
Joined: September 05, 2006
Posts: 20
Location: Nevada City, CA
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 Posted: Tue Sep 05, 2006 1:56 pm Post subject: 66 Split Driveline Clunk |
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 I need help diagnosing this sound.
Loud clunk from rear.
Clunk occurs over bumps in road when clutch is engaged.
Clunk disappears over bumps in road when clutch is released.
Mild clunk when clutch pedal is depressed quickly.
Louder clunk when clutch pedal is released quickly.
No clunk when engine isn’t running.
Newly replaced pressure plate, very firm.
Newly rebuilt reduction boxes.
Older transmission.
New transmission mounts, examined and perfect
Clunk not made by muffler or other part hitting bus.
Shocks and lug bolts tight.
Nice bend in Bowden tube.
Thank you for your help, Eben |
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kintail
Samba Member
Joined: January 01, 2003
Posts: 842
Location: Canada
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| Posted: Tue Sep 05, 2006 3:33 pm Post subject: |
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No mention of throw-out bearing?? New?? Used??? Match the pressure plate?
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Scott
August 1954 Beetle Canadian Deluxe |
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ebenhask
Samba Member
Joined: September 05, 2006
Posts: 20
Location: Nevada City, CA
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| Posted: Tue Sep 05, 2006 4:10 pm Post subject: |
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Thanks for the reply.
I pulled the engine after the problem occured.
The throw out bearing looked good, and it does match the clutch cover. |
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Saint76
Samba Member
Joined: February 18, 2004
Posts: 718
Location: Western United States
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| Posted: Tue Sep 05, 2006 6:17 pm Post subject: |
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| i'm having the same issue...or close..Any more help? |
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BarryL 
Samba Member
Joined: November 01, 2004
Posts: 15482
Location: Casa de Oro, California
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| Posted: Tue Sep 05, 2006 7:41 pm Post subject: |
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| Check the springplate to RGB bolts. |
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ebenhask
Samba Member
Joined: September 05, 2006
Posts: 20
Location: Nevada City, CA
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| Posted: Tue Sep 05, 2006 10:11 pm Post subject: |
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Thanks Barry. I'll check them tomorrow.
Can anyone else think of something I should check? |
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Campy
Samba Member
Joined: January 10, 2005
Posts: 4933
Location: Chico, CA
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| Posted: Tue Sep 05, 2006 11:24 pm Post subject: |
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| Worn out fulcrum plates and/or shovel end of the axles will make a clunking sound but only when the clutch pedal is released and the bus just begins to accelerate in first or second gears, so that may not be it. |
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Saint76
Samba Member
Joined: February 18, 2004
Posts: 718
Location: Western United States
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| Posted: Wed Sep 06, 2006 12:05 am Post subject: |
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Thanks Campy...That sounds exactly like what is going on with mine.
I will check it out.. |
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ToolBox
Samba Member
Joined: January 27, 2004
Posts: 3447
Location: Detroit, where they don't jack parts off my ride in the parking lot of the 7-11
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| Posted: Wed Sep 06, 2006 6:19 pm Post subject: |
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| Trans mounts good? |
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ebenhask
Samba Member
Joined: September 05, 2006
Posts: 20
Location: Nevada City, CA
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| Posted: Thu Sep 07, 2006 2:15 pm Post subject: |
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Thank you, Barry.
Thank you for reading my description of my driveline clunk problem carefully.
You hit the nail on the head.
The noise was caused by loose spring-plate bolts.
I have had this problem for a month and at least a dozen long time VW guys missed the cause. |
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BUCIOBATISTI
Samba Member
Joined: April 17, 2002
Posts: 6969
Location: San Diego, California, USA
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| Posted: Thu Sep 07, 2006 2:20 pm Post subject: |
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| ebenhask wrote: |
Thank you, Barry.
Thank you for reading my description of my driveline clunk problem carefully.
You hit the nail on the head.
The noise was caused by loose spring-plate bolts.
I have had this problem for a month and at least a dozen long time VW guys missed the cause. |
Shit, just read through this whole thread and was thinking that the whole time. I used to have a '66 Sundial years ago and the previous owner had told me that the trans made a nasty clunking noise and he was positive that it was just slop in a high mileage trans to blame. I got under the Bus with a ratchet and had the problem fixed in less than 5 minutes. The trans was awesome.
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RobzKombi
Samba Member
Joined: July 15, 2003
Posts: 2137
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| Posted: Mon Apr 06, 2015 9:05 pm Post subject: |
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| BUCIOBATISTI wrote: |
| ebenhask wrote: |
Thank you, Barry.
Thank you for reading my description of my driveline clunk problem carefully.
You hit the nail on the head.
The noise was caused by loose spring-plate bolts.
I have had this problem for a month and at least a dozen long time VW guys missed the cause. |
Shit, just read through this whole thread and was thinking that the whole time. I used to have a '66 Sundial years ago and the previous owner had told me that the trans made a nasty clunking noise and he was positive that it was just slop in a high mileage trans to blame. I got under the Bus with a ratchet and had the problem fixed in less than 5 minutes. The trans was awesome. |
So glad I found this thread, I thought that my mounts had gone bad or worse that my transmission would need some expensive work. So i made my way out to the garage to check and sure enough loose bolts on the spring plates. Tightened them up, now no more "cluncking" noise! |
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