Tappet adjustment on MM sidevalve engine
Posted: Sun Apr 28, 2024 12:36 pm
Working my way around the servicing of my 1952 sidevalve engine (I've had it 5 months) I notice that there is an oil leak from the tappet cover towards the rear, with oil covering the top of the gearbox. When I take the cover off to replace the gasket, I thought it would be sensible to check the tappet clearances. Having checked the workshop manual for the correct procedure a few obstacles spring to mind:
1) Do you have to remove the carburettor to get to the tappets more easily? They are not exactly accessible in comparison to the OHV engines!
2) The manual says they can be checked when hot (0.017"). I suspect burnt fingers and the engine being cool by the time the last ones are checked! It also mentions a clearance of 0.018" when cold and presumably this is a more practical alternative?
3) The manual says 3 spanners are required. 3 hands also?!
Some experienced advice very welcome!
1) Do you have to remove the carburettor to get to the tappets more easily? They are not exactly accessible in comparison to the OHV engines!
2) The manual says they can be checked when hot (0.017"). I suspect burnt fingers and the engine being cool by the time the last ones are checked! It also mentions a clearance of 0.018" when cold and presumably this is a more practical alternative?
3) The manual says 3 spanners are required. 3 hands also?!
Some experienced advice very welcome!