You Can Stop Digging Any Time Now

A photo showing extensive cracking in the dipper handle of a P&H 4100 Shovel.

If you look closely you will also see significant cracking at the base of the boom.

General View of Crack

Side View

Underside View

Not Quite Normal

 

P&H 4100 Propel Final Drive Shaft

Cracking initally detected with Ultrasonics whilst in-situ.

A UT Operators Worst Nightmare

Stainless Butt Weld Joining Carbon Steel and Manganese

 

 The above cracking and subsequent failure emphasises the importance of the initial UT inspection.