Technical Manual Operational Principle 330-3 class 330 -3 330LC -3 350H -3 350LCH -3 350LCK -3 350LC -3 350LCN -3 Hydraulic Excavator Service Manual consists of the following separate Part No; Technical Manual (Operational Principle) : Vol. No.TO1V7-E Technical Manual (Troubleshooting) : Vol. No.TT1V7-E Workshop Manual : Vol. No.W1V7-E PART NO. TO1V7-E-00