Quote:
Originally Posted by Matt FXDX  Spinlondon... intrested in finding out more on doing the job without
taking heads off, only just done that when i went gear driven cams,
( did'nt fancy adjustable pushrods ) so heads off with new Canetic gaskets!.. |
Don't know how easily the task can be performed on the Harley engine, with it still in the frame. May find the frame gets in the way.
Basicly air via a spark plug adapter is pumped into the cylinder head which keeps the valves from dropping into the head once the springs are removed.
The springs are then compressed using a special spring compressor, and the collets/keepers are removed. The spring compressor whith spring still compressed is carefully removed and placed to one side.(Don't want to disturb the spring as it will be a bugger to compress again from it's free legth.) The seals are then replaced, the springs (still compressed and in the compresser) are carefully replaced along with the collets/keepers.
Obviously the rockers have to be removed.
The best ones are the sort that bolt to the engine, as then you don't need to worry about keeping the springs compressed once the collets/keepers are removed. Don't know if they are available for the Harley engine though.
Here's a link for you to get some idea of what the tools are like:
Valve Spring Compressors - UKtools - Sealey Tools | Britool | Draper | Facom |