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4 th Why / Root Cause Cause & Effect (Fishbone)

The 4 th Why can be formed once the Team has Completed the 3 rd Why. 4 th Why / Root Cause Development. 4 th Why / Root Cause Cause & Effect (Fishbone). 4 th Why / Root Cause FMEA. 4 th Why / Root Cause Examples. 4 th Why / Root Cause Development.

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4 th Why / Root Cause Cause & Effect (Fishbone)

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  1. The4th Why can be formed once the Team has Completed the 3rd Why 4th Why / Root Cause Development 4th Why / Root Cause Cause & Effect (Fishbone) 4th Why / Root Cause FMEA 4th Why / Root Cause Examples

  2. 4th Why / Root Cause Development Developing the 4th Why / Root Cause Determine two Root Causes and the Prevention Method for each Failure Mode A Root Cause can be defined as a Product, Process or Design Weakness that may result in a Failure Enter the Occurrence directly into the cell or select from the possibilities in the drop down options. With additional Pop up Aid Failure Mode Prevention Method & Occurrence Rating

  3. 4th Why / Root Cause Development Developing the 4th Why / Root Cause Select from the other Entries in the Drop Down List of Root Cause’s / Prevention Controls. Enter a Root Cause/ Prevention directly into the cell/select from the drop down list if previously entered. Root Causes/ Preventions are automatically added to the database. To Update/Edit/View the Database: Select ‘Add-Ins’, ‘Database Rankings’ , ‘Potential Failure Cause DBS’ OR ‘Prevention Control DBS’..

  4. 4th Why / Root Cause Examples D4 - Developing the 4th Why …Options The 4th Why defines the Root Cause/s of the 3rd Why / Failure Mode Option 1:The Process Sequence Example ‘VALVE MANUFACTURING’ DESIGN/ APPLICATION ASSEMBLY/ TEST RAW MATERIAL MACHINING TAPPING

  5. 4th Why / Root Cause Examples D4 - Developing the 4th Why …Options The 4th Why defines the Root Cause of the 3rd Why Option 2: Any other logical method or sequence, Example ‘BACK ACHE’ NERVES ASSOCIATED ORGANS POSTURE SPINAL COLUMN MUSCLES

  6. 4th Why / Root Cause FMEA D4 – 4th Why = the Root Cause Will automaticallybe updated 4th Why / Root Cause • Select which Root Cause you would like toFurther Investigate RAW MATERIAL MACHINING TAPPING ASSEMBLY/ TEST DESIGN/ APPLICATION CUTTING FLUID VALVE BODY ADAPTOR SETTINGS SWARF VISCOSITY FOREIGN MATTER DIRTY CASTINGS SAND IN CASTINGS 5th Why

  7. 4th Why / Root Cause C&E (Fishbone) D4 - The 4th Why will be forwarded to the Cause & Effect Diagram. It will appear on the left, according to the Failure Mode you have selected. RAW MATERIAL DESIGN/ APPLICATION MACHINING TAPPING ASSEMBLY/ TEST

  8. This completes the D4 4th Why Now start the D4 5th Why

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