Hi,
I have this 20+ years old Durst L1200 Laborator (condensor version) which has been working flawlessly. Recently I noticed a small problem with the hand grips you use to raise and lower the head:
Seen from the back: Grip A is for the fine adjustment, B dislodges and is used to move smoothly over larger distances:
The problem that grip A does not function any more, ie the head does not move when turned.
A closer look reveals this:
So Grip A drives chain C and a metal disc, which has a black disc (of rubber or ? material) attached to it, which is supposed to take a long metal disc E which drives the Teflon gear for the fine adjustment.
As I judge is :this black material is worn, become smooth, and does not "pick" up the metal disc E by friction any more (I assume that a clutch works along these lines, not to well versed in mechanics).
Is this the cause, and is it repairable (with not too much effort and difficulties) ?
thanks and best,
Cor
Bookmarks