5 Why's

5 Why's is a process to find a solution and to find the reason for the problem below is a common problem that easily shows how to use the 5 why's process and how to create a solutions to the problem after finding the problem. Most of the time when you have a problem the actually cause of the problem is more than a couple why's back or the original problem causes other problems that you must now fix. Below is a guide to 5S and 6S it covers all the basic information and supplies needed to create a 5S system in any warehouse, facility, office or hospital. Please read over this information and fill in the information below.

(1st Why) Why is there oil on the floor?
(Answer after investigation) It is leaking from a hose.

(2nd Why) Why is oil leaking from this hose?
(Answer after investigation) The hose is rubbing on a fan belt.

(3rd Why) Why is it rubbing on the fan belt?
(Answer after investigation) The fan belt housing is very loose.

(4th Why) Why is the fan belt housing so loose?
(Answer after investigation) Some of the bolts that hold it in place are missing or broken off.

(1 How) How do we fix the problem?
(Answer) Replace the hose and fan belt, remove broken bolts on fan belt housing and replace with new ones, torque all bolts to proper specifications, check bolt torque with regular preventative maintenance.

You may not always need 5 why's or some time you may need more this is ok.