rogerowen Posted June 25, 2011 Report Share Posted June 25, 2011 I am in the process of replacing the seals in the Girling rear wheel cylinders of my 4A (LHD,Solid Axle). Cylinder contains just the seal and piston, but in my parts manual it shows a spring. 1. I've either not got a spring when there should be one, or the inclusion of a spring was changed at some stage for some reason. Anyone? Cheers, Roger Quote Link to post Share on other sites
bob-menhennett Posted June 25, 2011 Report Share Posted June 25, 2011 Roger Should have a spring !! Needed for the "return " back to rest part of the operation. Apologies but I'll ask the daft question, as my father always taught me, the spring is not still stuck in the cylinder is it ? Bob Quote Link to post Share on other sites
rogerowen Posted June 25, 2011 Author Report Share Posted June 25, 2011 Hi Bob, Thanks, spring defintely absent. I have just managed to find a drawing of a 4's set up and - no spring shown! Just about to pull off the other cylinder to see if that has a spring or not. Cheers, Roger Quote Link to post Share on other sites
stuart Posted June 25, 2011 Report Share Posted June 25, 2011 No spring in the cylinder, thats why you have ruddy great springs on the shoes I have all of my solid axle 4a back brakes in bits now so can say that for certain . Stuart. Quote Link to post Share on other sites
bob-menhennett Posted June 25, 2011 Report Share Posted June 25, 2011 Stuart/ Roger I stand corrected.My reference books show a spring but I've never found Stuart to be wrong, too many years of practical experience. Bob Quote Link to post Share on other sites
rogerowen Posted June 25, 2011 Author Report Share Posted June 25, 2011 Thanks Stuart, that's Brill! Cheers, Roger Quote Link to post Share on other sites
rogerowen Posted June 26, 2011 Author Report Share Posted June 26, 2011 Just looking at the 4A parts list diagram again and I realise that the spring inside the cylinder actually provides force in the opposite direction to the brake shoe springs! My thinking here is that its purpose may be either to 'cushion' the return force of the piston so it wont strike the back end of the wheel cylinder or, it may be there to keep the seal away from blocking the fluid inlets whilst in the fully back position. Anyway, it must have worked ok before - so I think I'll just bung on a new seal and see what happens. Cheers, Roger Quote Link to post Share on other sites
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