Hello, my Murena ist showing his femine side and being bitchy. The Bowden cable for the tailgate has insufficient tension on the right-hand lock. As a result, I am unable to open the tailgate.
How can I raise the tension slightly from the outside to access the adjustment? Remove the belt, remove the B-pillar trim, or is there a better approach?
There are several things here and it could also depend on the particular Murena you have, because if you have a 1983 Murena, the rear of the lamps are completely sealed off from the boot, by metal covers welded to the shell. The earlier cars have fibre covers and the rear of the lamps can be accessed from the boot. What has this to do with the tail glass locks? I don't want to say this in an open forum so please email me on my domain name, (not here) and I can explain further.
The problem you have is that once the left lock is pulled to its furthest point when you pull the cable normally, if the right lock has not opened, no amount of extra pulling is going to release it as the cable is now restricted by the left lock at its maximum. The problem as you have realised is that the cable between the locks is not taut enough.
Once you get the lock open so you can rectify the situation, one solution for future reliability is to replace the cable between the locks with a solid piece of piano wire similar to the cables used for the heater controls (and similar to what Herman advises). Once the adjustment of that solid wire makes the two locks work together, then it only requires the lock on the left to have sufficient pull to release it, and the right lock will always release too.
Roy (roy@matraclub.org.uk)