Morris Minor Owners Club

It would be nice to have internal heater controls, but when they swapped for the 1275 engine they fitted the hand turn valve. and the long unused heater cable has frozen.

So, I've ordered a new control valve and understand I'll probably have to take a nibble out of the battery plate to fit it.

Any advice on how to free the cable? I assume remove it and lot of work with WD40 and a pair of pliers or somthing similar?

use some sort of plus gas to free the cable.
you can buy from esm an extended metal pipe that has a top and bottom flange that you put on the cylinder head first and then the heater valve.
brings it all clear of the battery shelf, i have one on my van

If its the old style cable that has wound metal around the cable and not the plastic, you can just spray plus gas onto the outer sheath and let it soak through.

The old tip was to make a sort of cup out of plasticene at the end of the cable, and fill it with 3 in 1, allowing it to trickle down the cable.