Chain 



Pin (2 places) 



Extension 



Insert to ~ Drill Insert and 

 carry load Extension 1/16 inch 

 on shoulder oversize 



(a) Pin Connection 



o o 



11/4 inch 

 NPT 



Chain 



o o o 



Pin similar to 

 pin in (a) 



1 1/4 inch 

 NPT 



Hole through 

 tubing to lock 

 in retracted 

 position 



(b) Telescoping Extension 



Figure 17. Improvements for a 



Ram Extension System 



19 



