I'm trying to help my dad fix his washing machine. Its a Maytag LA308 built in Dec 1978. It fills up with water and agitates, but does not drain. It tries to spin but because the water is still in the tub it goes real slow. He has been able to drain the water by moving the dial around until the drain pump finally engages and drains the tub. He has tried different cycles but always ends up with a tub full of water. From what I can tell it might be the timer or maybe the belts. Any pointers would be appreciated. Thanks.