Drive shaft seal castle nut

[JerseyRenault4]

I am the proud owner of a restored 1985 Renault 4 which contains significantly more metal than it did when the fantastic team at Le Riche Motors in Jersey started. I have an oil leak from the drive shaft which has a large (4.5 inches ish) aluminium cap on it that has seized. Does anyone have any suggestions as to where I might be able to get a tool or castle nut to fit this so as to be able to remove it please? The usual online suppliers tell me that this is an unusual size.

 

[Andy McGhee]

You can get a tool to undo the differential 'caps' (In your second picture) from poussieresdepistes.com

 

[JerseyRenault4]

Thank you. Tool now ordered.