I have had a problem before with my boom not swining left to right and I contacted a technition who found the velve was sticking. I have the same problem again and would like to repair it myself, where can I find which valve operates the boom from left to right.

william, June 2011

You are looking for the slew ARV,s these are located on the top and bottom of the excavator valve block on the off side 90 Dregrees to the hoses feeding the slew rams or pots.

Fix-a-JCB.com, June 2011