ATTACHMENTS, OPTIONS HANDLING HYDRAULIC RIPPER
6-7
TROUBLESHOOTING 6
OTHER TROUBLE 6
q ( ): Always contact your Komatsu distributor when dealing with these items.
q In cases of problem or causes which are not listed below, contact your Komatsu distributor for repairs.
Problem Main causes Remedy
Slow ripper raising and function,
lack of ripping force
•Improper hydraulic oil
•Defective pump
•Defective adjustment of relief valve
•Defective control valve, safety valve
•Defective valve spool
•Defective piston ring, packing, valve
•Clogging inside piping
•Add oil to specified level, see
EVERY 250 HOURS SERVICE
(•Check, repair)
(•Check, repair)
(•Check, repair)
(•Check, repair)
(•Check, repair)
Cylinder lacks holding power
•Leakage of oil from piping, hose
•Defective piston ring, packing
•Defective piston valve
•Defective valve spool
•Defective safety valve, suction valve
•Tighten
(•Replace)
(•Check, repair)
(•Check, repair)
(•Check, repair)
Oil pressure does not rise
•Clogging inside piping
•Defective adjustment of relief valve
(•Repair)
(•Check, adjust)
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