Cable modifications for servo'd minis
Modifying the heater cable on brake servo assisted Minis,
1989 on:
If the heater on these Minis doesn't get hot enough (or does not give cool air),
check the connection on the heater valve in the engine bay. The cable is only
hooked in the valve, so it is not possibility to adjust the travel of the valve
as on the old Minis.
The valve lever travels a distance of about 28mm. But sometimes the cable does
not make the same movement. The only way to do an adjustment, is to measure the
amount the cable moves. Let's say, it's doing 25 millimeters. So the
difference is 3mm. Cut those 3 mm (better 4) from the outer cable.
In this way you have increased the travel of the cable.
Knob
The latest minis are 'pull for hot'.