All early 4 cylinder diesels 1961 to 1976 with loop series glow plugs. Override factory glow system with better performing pencil glow plugs included -- PDF Digital Instructions included!
These drawings should help if you have to remove your transmission and work on the linkages. Sometimes it can be a little confusing when going to reinstall the rods. I know from experience! :-)
Transmission linkage - 1974-1981 240D. Arrow at top shows locking pin installed prior to adjustment.