One-Touch Power Maximizing Function Does Not Work - Komatsu PC200-8M0 Shop Manual

500 Troubleshooting of hydraulic and mechanical system (H-mode)
H-13 One-touch power maximizing function does not work
H-13 One-touch power maximizing function does not work
q
Failure

One-touch power maximizing function does not work.

Related infor-
q
Perform all troubleshooting with working mode in power mode (P).
mation
Probable
Malfunction of 2-stage relief
1
causes and cri- solenoid valve
teria
Malfunction of main relief
2
valve
PC200, 200LC, 220, 220LC-8M0
Cause
a Be ready with engine stopped, then troubleshoot with engine
high idle.
The main relief valve may malfunction. Check it.
Criteria and troubleshooting procedure
Swing lock switch
OFF
ON
SEN06139-00
2-stage relief solenoid valve
output pressure
0 MPa
2
{0 kg/cm }
Approx. 2.9 MPa
2
{Approx. 30 kg/cm }
40-500
23