Posting the machine's exact model number ("Kenmore 70 series" is not it) will allow us to find out what design of washer you're dealing with. You can find tips for locating the model number tag on your appliances in the 'Repair Parts' section of my site linked below.
** It will start the cycle then it will stop in between for about 15 minutes and after continue. **
What is it suppose to be doing at the time when it stops? If a fill, check for slow filling as might be caused by partially plugged sediment screens on one (or both) fill hoses and at the water fill valve..