Komatsu PC58UU-3, Руководство по ремонту

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TROUBLESHOOTING H-3
20-512
PC58UU-3
1
★
Before carrying out troubleshooting, check that oil level in the tank is proper.
Select a combination of systems which do not move from Table 1 before going to the next trouble-
shooting.
If the combination of the detected troubles is not in Table 1, carry out troubleshooting for the actuators
of each system [which does not move] (H-10 ~ H-13).
Table 1 Combination table of troubled systems and troubleshooting items
!
: Normal
✕
: Does not move
a) Work equipment (including blade), travel, and swing systems do not move
H-3 Two or more of work equipment (boom, arm, bucket, and off-
set), travel, swing, and blade systems do not move
Work equipment Travel Swing Blade
Troubleshooting
item
✕ ✕ ✕ ✕
a Go to a
✕ ✕ ✕
!
b Go to a
✕ ✕
! !
c Go to a
! !
✕ ✕
d Go to a
!
✕
!
✕
e Go to a
✕
! ! !
f Go to a
!
✕ ✕
!
g Go to a
Cause Remedy
1
When engine is cranked, does oil
flow out of pump?
When oil does not flow out of any of
following pump
• Main pump
• Gear pump
• Pilot pump
2
Is suction strainer clogged?
No
Yes
Clogging of suction strainer Clean or replace
3
Is damper or spline damaged?
No
Defective main pump shaft Replace
Yes
Defective damper or spline Replace
• When oil flows out of main pump
but does not flow out of gear pump
and pilot pump
4
Coupling or spline between main
pump and gear pump is damaged. No
Defective gear pump Replace
Yes
Defective coupling or spline Replace