[TR] Knocking noise

[Dave]

Did you flat tow it for a considerable distance with the drive shaft connected?  I did that with my TR6 and got the same noise.  It is the layshaft in the transmission.  Or rather the bearings on the layshaft.  When you depress the clutch the transmission stops spinning and the noise stops.

Now's the time to pull it and rebuild it rather than wait for the rebuild to be complete only to undo the interior.

 

Dave Massey


 

 

-----Original Message-----
From: Jim Vassiliadis <jimstr4 at gmail.com>
To: triumphs <triumphs at autox.team.net>
Sent: Tue, Jun 6, 2017 4:06 am
Subject: [TR] Knocking noise



There's a knocking noise coming from my Tranny area when that cars idling in neutral.
1. It's a TR4 tranny wth an overdrive unit.
2. The noise take a few seconds to appear.
3. When I fully depress the clutch it goes away.
4. When I partially depress the clutch it's still there.
5. The spring holds the clutch fork off the plate.
 
I'm not sure if it was there when I drove it down the driveway.
I think it went away but reappeared when I coasted.
 
I hate removing the tranny from the TR4, I'm quiet adept at it but it's painful, any ideas on what it could be?
 
Jim and the 62 TR4.


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