Originally Posted by
r.over
I have not been particularly interested in why they don't work when they are suppose to, so I have not taken notes when it has been explained. But apparently the actuator has grease or other lubricant in it. From those that have trouble with them have indicated that the grease goes hard over time. This causes it to gunk up and makes it difficult to move. This causes it to either not engage or not to disengage. From memory there is something you have to be careful with if you pull it apart, but I can't remember what it is.
I wonder why no one wanted to purchase the maxi-drive difflock part of the business. So I guess that it does not matter whether the are good, bad, or indifferent, you cannot purchase new ones anymore.