Time Lag Of Work Equipment Is Large; One-Touch Power Maximizing Function Does Not Work - Komatsu PC130-7 Shop Manual

TROUBLESHOOTING
H-12 Time lag of work equipment is large
Trouble

• Time lag of work equipment is large.

Related
• Carry out the troubleshooting in working mode A.
information
Possible causes Malfunction of control valve
and standard 1 (regeneration valve) [Only
value in normal boom]
state
Malfunction of control valve
2
(Suction valve)
H-13 One-touch power maximizing function does not work
Trouble

• One-touch power maximizing function does not work.

Related
• Carry out installation in the reverse order to removal.
information
Possible causes
Malfunction of 2-stage
and standard 1
relief solenoid valve
value in normal
state
Malfunction of main relief
2
valve
PC130-7
Cause Standard value in normal state/Remarks on troubleshooting
The regeneration valve of the control valve may have a malfunction.
Check it directly.
The suction valve of the control valve may have a malfunction. Check it
directly.
Cause Standard value in normal state/Remarks on troubleshooting
aPrepare with engine stopped, then run engine at high idling and carry
out troubleshooting.
The main relief valve of the control valve may have a malfunction.
Check it directly.
Swing lock switch
OFF
LOCK
H-12, H-13
Solenoid valve output pressure
0 MPa
2
{0 kg/cm }
2.84 – 3.43 MPa
2
{29 – 35 kg/cm }
20-515
(1)