Komatsu PC130-8 User Manual

40 Troubleshooting SEN04124-00
PC130-8
15
H-11 Time lag of work equipment is large 1
H-12 Power maximizing function does not operate normally 1
Trouble • Time lag of work equipment is large.
Related
information
• Conduct the troubleshooting in working mode P.
Possible causes
and standard
value in normal
state
Cause Standard value in normal state/Remarks on troubleshooting
1
Malfunction of control valve
(regeneration valve) [Boom
and arm]
The regeneration valve of the control valve may have a malfunc-
tion. Check it directly.
2
Malfunction of control valve
(suction valve)
The suction valve of the control valve (on the head side) may have
a malfunction. Check it directly.
Trouble • Power maximizing function does not operate normally.
Related
information
• Carry out all troubleshooting in power mode (P) of working mode.
Possible causes
and standard
value in normal
state
Cause Standard value in normal state/Remarks on troubleshooting
1
Malfunction of 2-stage relief
solenoid valve
a Prepare with engine stopped, then run engine at high idle and
carry out troubleshooting.
Swing lock switch
2-stage relief solenoid valve
output pressure
OFF
0 MPa
{0 kg/cm
2
}
ON
2.84 – 3.43 MPa
{29 – 35 kg/cm
2
}
2
Malfunction of main relief
valve
Main relief valve may have malfunction. Check it directly.

Komatsu PC130-8 Specifications

General

Brand	Komatsu
Model	PC130-8
Category	Excavators
Language	English