Figure L-5. KuUenberg piston corer release mechanism. 



Allen wrench set ; 

 Screwdriver ; 

 Hacksaw. 



Step 1. Complete the upper assembly by con- 

 necting the adapter to the main body tube with 

 at least three complete turns on the treads. 



Step 2. Place the upper assembly on the 

 deck in a horizontal position, insert the coring 

 tube in the adapter and secure it in place with 

 the set screws. 



Step 3. Insert a length of 2-inch, outside- 

 diameter, plastic liner into the corer as far as 

 it will go and score a mark on the liner flush 

 with the end of the coring tube. 



Step 4. Cut the liner approximately i/o inch 

 shorter than marked. 



Step 5. Reinsert liner; insert core catcher; 

 test the fit of the cutting edge; then remove 

 core catcher and cutting edge. 



Step G. Feed the f re« end of the lowering wire 

 through the main body tube and the coring tube ; 



attach the thimble on the end of the lowering 

 wire to the swivel comiection on the jjiston ; pull 

 the piston back into the coring tube, leaving just 

 enough space for the core catcher; replace the 

 core catcher and secure the cutting edge with the 

 set screws. 



Step 7. Clamp the release mechanism to the 

 oceanographic wire, leaving a 4- to 6-foot loop 

 or bight above the corer. The exact amount of 

 wire in the loop can best be determined by ex- 

 perience. Insert the corer bail in the release 

 meclianism slot, and insert the safety pin. 



Step 8. Fasten the trigger weight line to the 

 end of the release arm with an overall length of 

 line and weight equal to the total length of the 

 corer plus the loop of wire (free-fall distance) 

 between the top of the corer and the release 

 mechanism. Then attach the trigger weight. 



Step 9. Swing the assembly outboard and 

 suspend it over the side in a vertical position ; 

 then, attach 4 to 6 cast lead drive weights on the 



L-6 



