My 13SB had a new cambelt 4 years ago and the car lay for the last 3 years.
When giving it a thorough service I checked the belt tension, according to Haynes there should only be 6.5mm of movement, there was more so I tightened it. It then hummed fairly loudly. I released it a bit until the humming more or less stopped.
Now it is 8mm of movement, I can turn it 90 degrees easily and more if I try hard. The hum is more or less gone so I assume, Haynes settings are just a bit too tight?
What sort of settings does everyone else use?
Thank you