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The Marston Sunbeam Club & Register Forum

General Category => Technical Discussion Forum => Topic started by: shorrog on March 17, 2015, 05:58:23 PM

Title: Rocker Box Side Plate screw. Model 9 1930
Post by: shorrog on March 17, 2015, 05:58:23 PM
Hi Folks.
I have just dismantled my 1930 Model 9 Rocker box and was wondering if anyone knows the purpose of the screw on the side plate. As far as I can see it does not seem to do anything.

Graham
Title: Re: Rocker Box Side Plate screw. Model 9 1930
Post by: shorrog on March 18, 2015, 03:34:47 PM
Well I think I have found out what its for courtesy of Les Hobs.
It is there to allow oil to be added to the rocker box on newly built engines, basically there is a small reservoir in the rocker cover that can have oil fed into via the screw hole. The oil then splashes on to the valve stems.

Graham
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