Paul Ketteridge

I have a V class with a broken Glow plug so we have to remove the cylinder head and I was just wondering if anyone out there has any information that would assist us in carrying out the job. We have been advised that it is nearly impossible to get the injectors out and the easiest way is to break the rocker cover off, has anyone else got any more constructive advice, ways to remove the injectors, location of head bolts etc