[Mgs] Mgs Digest, Vol 197, Issue 3

[Paul Hunt]

Second para is not correct, the self-adjusting nature of the clutch 
means wear at the slave end is automatically compensated for.  I know I 
have no experience of the MGA but read Barney Gaylord's page, the 
paragraph commencing "One of the key features ...": 
https://mgaguru.com/mgtech/clutch/ct_100.htm

Yes there should be some free play at the pedal.  If the master piston 
can't come back the bypass port may not open and fluid not be able to 
flow freely between reservoir and  slave with the pedal released.  This 
is essential so that fluid expansion as the system heats up does not 
apply excess pressure to the release bearing with the pedal released 
which can cause clutch slip, and also to allow the self-adjusting 
function to operate correctly.  OTOH too much free play e.g. from worn 
components there causes a low biting point, which is why I said if the 
biting point is fine then leave it alone.

PaulH.

On 30/10/2023 18:25, Eric Russell wrote:
> There should be a small amount of free play at the pushrod to master 
> cylinder piston (~ 1/16" which translates to ~ 3/8" at the pedal). 
> This ensures the piston is able to fully return to the off position.
>
> Check the pushrod & clevis pin at the slave cylinder. Since they are 
> exposed to the elements they will often wear - the hole in the pushrod 
> becoming elongated & the clevis pin looking more like a mini 
> crankshaft. All that lost motion means the clutch doesn't operate 
> through a full stroke.
>
> EjR
>
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