Workshop Manual 850 -3 850LC -3 870H -3 870LCH -3 Hydraulic Excavator Service Manual consists of the following separate Part No; Technical Manual (Operational Principle) : Vol. No.TO1JB-E Technical Manual (Troubleshooting) : Vol. No.TT1JB-E Workshop Manual : Vol. No.W1JB-E PART NO. W1JB-E-00