replaceing HLA's on accent 2001
 

I removed the valve cover and wanted to replace the HLA'S on a 2001 accent with a 1.5l the hyundia manual make you think the rocker hold down come right off but if I remove them I think the cam will come loose . Do you have to remove the timing belt to get the rocker assemble off? What am I missing? and do you have to remove the end caps which seems to hold the cam down?