I have Kenmore washing machine of 80 vintage, which needs, hot air to be blown for about half an hour and then it starts running smoothly or else makes loud noise as if all gears are going to break apart. Once it starts running it functions perfectly, however at times it trips when you have to stop the machine and restart a few times for smooth running. When it is noisy it leaks water or else there is no puddle. Our local tech are not able to solve the problem, I seek help as I don't want throw a working machine.