Komatsu PC58UU-3 User Manual

TROUBLESHOOTING H-14, H-15
PC58UU-3
20-533
1
H-14, H-15
H-14 Hydraulic drift of boom is large
H15 Hydraulic drift of arm is large
Cause Remedy
1
Is leakage from hydraulic cylin-
der normal?
NO
Defective cylinder
piston packing
Repair or
replace
YES
2
When centralized safety valve
is replaced, is trouble repaired?
NO
Defective boom lock
valve
Repair or
replace
YES
Defective centralized
safety valve
Replace
Cause Remedy
1
Is leakage from hydraulic cylin-
der normal?
NO
Defective cylinder
piston packing
Repair or
replace
YES
2
When centralized safety valve
is replaced, is trouble repaired?
NO
YES
Defective centralized
safety valve
Replace
3
If suction valve is replaced with
blind plug, is travel repaired?
NO Defective oiltight-
ness of control valve
spool
Repair or
replace
YES
Defective suction
valve
Repair or
replace

Komatsu PC58UU-3 Specifications

General

Brand	Komatsu
Model	PC58UU-3
Category	Construction Equipment
Language	English