Komatsu PC210LC-6 User Manual

TROUBLESHOOTING
H-31
H-31 Swing speed is faster than specified swing speed
* Carry out troubleshooting in the H/O mode.
Yl
* 5.8 - 1.8 MPa
(60 - 80 kg/cm*)
- Engine at high
idling
p
l At bucket relief
2 YES
Is LS control EPC
solenoid valve
output pressure
normal?
* See Table 1.
NO
3YEzi
Is pump merge-
divider solenoid _
, valve output
pressure normal?
l 3.0 + 0.2 MPa
NO
(31 + 2 kg/cm?
* At swing relief
. Turn swing lock
switch ON.
cause
lefective operation of LS
alve
qeplace servo
sssembly
reeztive LS control EPC
Repair or
replace
refective operation of main
Terge-divider valve or LS
lerge-divider valve
Repair or
replace
tefective operation of pump
Repair or
nerge-divider solenoid valve
replace
Table 1 Output pressure of LS control EPC valve
l Engine at high idling
H/O mode
G/O mode
PC200 0.2 f 0.2 MPa 0.2 f 0.2 MPa
PC21 0 (2 f 2 kg/cm? (2 f 2 kg/cm?
PC220 0.2 f 0.2 MPa 0.2 f 0.2 MPa
PC250 (2 f 2 kg/cm?
(2 + 2 kg/cm?
F/O mode
1.5 f 0.2 MPa
(15.5 f 2 kg/cm?
0.2 + 0.2 MPa
(2 + 2 kg/cm?
L/O mode
1.5 f 0.2 MPa
(15.5 + 2 kg/cm?
1.5 f 0.2 MPa
(15.5 + 2 kg/cm?
20-239
0
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Komatsu PC210LC-6 Specifications

General

Brand	Komatsu
Model	PC210LC-6
Category	Excavators
Language	English