On Tue, 26 Dec 2006, MICHAEL ESH wrote: > I have a 1983 240 D and a 1981 300SD. The oil filter is accessed from the > top and they have a hollow metal shaft with two o-rings on the lower end of > the shaft. > How often should these o-rings be replaced?
When they get hard and are deformed (square not round) > How do you clean out the hollow shaft? I use brake cleaner and compressed > air. Are you supposed to run a wire or cleaning brush through this shaft to > keep it clear or just rinse it out. I used carb cleaner, but there is a spring/ball check-valve in the tube, I think it is downflow only. I recall using the carb cleaner in the side port(s) to flush it. -j.
