Subject: Re: jacks (Jackall system)

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found nice service information, MG Y seems to have used the same system as the postwar Lagonda : http://www.mgcars.org.uk/mgccy/pdf/scimag52.pdf

does not tell how to get the rustet thread moving

for spare parts I found this supplier (MG S and postwar Lagonda have the same jacks it says) and e-mailed him for info.
http://www.svwspares.co.uk. They have a huge spare parts list, the jackall is here: http://www.svwspares.co.uk/catalogue/page20.htm Includes exchange jacks for 73.50 GBP
They say they use heat to get the thread moving

here we may find more advice and contacts:
http://www.mgcars.org/mgccy/ - go to Technical Centre - Jackall Advice